Abstract

α–FeOOH nanoparticles are spherical and weakly magnetic. The size of the particles is about 8 nm, so they are regarded as Rayleigh scatterers. Aqueous colloids based on these particles exhibit magnetically enhanced transmission of light; the relative transmission coefficient reaches almost 1.3 when H = 500 Oe. Since the magnetic interaction between the particles is too weak to form chain-like aggregates, the enhancing effect is mainly attributed to the variation of the absorption cross-sections of the colloidal system in relation to the coupling of magnetic and dielectric properties of the particles. Along the direction of the external magnetic field, the absorption cross-section of the colloid decreases so that the transmitted light parallel to the field direction is enhanced and increases with the field. The results of this investigation indicate that there could be potential applications for weakly magnetic colloids based on non-cubical nanocrystals.

© 2012 OSA

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2012 (2)

E. A. Elfimova, A. O. Ivanov, and P. J. Camp, “Theory and simulation of anisotropic pair correlations in ferrofluids in magnetic fields,” J. Chem. Phys.136(19), 194502 (2012).
[CrossRef] [PubMed]

J. Fu, J. Li, Y. Q. Lin, X. D. Liu, H. Miao, and L. H. Lin, “Study of magneto-optical effects in γ-Fe2O3/ZnFe2O4 nanoparticle ferrofluids, using circularly polarized light,” Sci. China Phys. Mech. Astron.55(8), 1404–1411 (2012).
[CrossRef]

2011 (2)

H. Miao, J. Li, Y. Lin, X. Liu, Q. Zhang, and J. Fu, “Characterization of γ-Fe2O3 nanoparticles prepared by transformation of α-FeOOH,” Chin. Sci. Bull.56(22), 2383–2388 (2011).
[CrossRef]

Y. Zou, Z. Di, and X. Chen, “Agglomeration response of nanoparticles in magnetic fluid via monitoring of light transmission,” Appl. Opt.50(8), 1087–1090 (2011).
[CrossRef] [PubMed]

2010 (1)

J. J. Cerdà, E. Elfimova, V. Ballenegger, E. Krutikova, A. Ivanov, and C. Holm, “Behavior of bulky ferrofluids in the diluted low-coupling regime: theory and simulation,” Phys. Rev. E Stat. Nonlin. Soft Matter Phys.81(1), 011501 (2010).
[CrossRef] [PubMed]

2009 (4)

A. Wang, J. Li, and R. Gao, “The structural force arising from magnetic interactions in polydisperse ferrofluids,” Appl. Phys. Lett.94(21), 212501 (2009).
[CrossRef]

D. E. Madsen, L. Cervera-Gontard, T. Kasama, R. E. Dunin-Borkowski, C. B. Koch, M. F. Hansen, C. Frandsen, and S. Mørup, “Magnetic fluctuations in nanosized goethite (α-FeOOH) grains,” J. Phys. Condens. Matter21(1), 016007 (2009).
[CrossRef] [PubMed]

D. Zhang, Z. Di, Y. Zou, and X. Chen, “Temperature sensor using ferrofluid thin film,” Microfluid. Nanofluid.7(1), 141–144 (2009).
[CrossRef]

S. Pu, L. Yao, F. Guan, and M. Liu, “Threshold-tunable optical limiters based on nonlinear refraction in ferrosols,” Opt. Commun.282(5), 908–913 (2009).
[CrossRef]

2008 (2)

H.-D. Deng, J. Liu, W.-R. Zhao, W. Zhang, X.-S. Lin, T. Sun, Q.-F. Dai, L.-J. Wu, S. Lan, and A. V. Gopal, “Enhancement of switching speed by laser-induced clustering of nanoparticles in magnetic fluids,” Appl. Phys. Lett.92(23), 233103 (2008).
[CrossRef]

J. Li, Y. Huang, X. Liu, Y. Lin, Q. Li, and R. Gao, “Coordinated chain notion resulting in intensity variation of light transmitted through ferrofluid film,” Phys. Lett. A372(46), 6952–6955 (2008).
[CrossRef]

2007 (1)

H. Mukai, S. Shibli, and P. Fernandes, “Orientational order studies by magneto-optical and light-effects in lyotropic liquid crystal,” J. Mol. Liq.135(1-3), 53–56 (2007).
[CrossRef]

2006 (2)

J. Li, X.-D. Liu, Y.-Q. Lin, Y. Huang, and L. Bai, “Relaxation behavior measuring of transmitted light through ferrofluids film,” Appl. Phys. B82(1), 81–84 (2006).
[CrossRef]

G. Fosa, R. Bădescu, G. Călugăru, and V. Bădescu, “Measuring the transmittivity of light: a tool for testing the quality of magnetic liquids,” Opt. Mater.28(4), 461–465 (2006).
[CrossRef]

2005 (3)

S. Klapp, “Dipolar fluids under external perturbations,” J. Phys. Condens. Matter17(15), R525–R550 (2005).
[CrossRef]

K. Wu, Y. Yao, G. Rao, Y. Chen, and J. Chen, “Magnetic field induced optical variation in nanosize iron oxide fluid-particles,” Microelectron. Eng.81(2-4), 323–328 (2005).
[CrossRef]

A. Yu. Zubarev, J. Fleischer, and S. Odenbach, “Towards a theory of dynamical properties of polydisperse magnetic fluids: effect of chain-like aggregates,” Physica A358(2-4), 475–491 (2005).
[CrossRef]

2004 (2)

H. E. Horng, C. S. Chen, K. L. Fang, S. Y. Yang, J. J. Chieh, C.-Y. Hong, and H. C. Yang, “Tunable optical switch using magnetic fluids,” Appl. Phys. Lett.85(23), 5592–5594 (2004).
[CrossRef]

B. Huke and M. Lücke, “Magnetic properties of colloidal suspension of interacting magnetic particles,” Rep. Prog. Phys.67(10), 1731–1768 (2004).
[CrossRef]

2003 (3)

S. Odenbach, “Ferrofluids—magnetically controlled suspensions,” Colloids Surf. A Physicochem. Eng. Asp.217(1-3), 171–178 (2003).
[CrossRef]

A. Yu. Zubarev and L. Yu. Iskakova, “Structural transformations in polydisperse ferrofluids,” Colloid J.65(6), 711–719 (2003).
[CrossRef]

K. Mangold, P. Leiderer, and C. Bechinger, “Phase transitions of colloidal monolayers in periodic pinning arrays,” Phys. Rev. Lett.90(15), 158302 (2003).
[CrossRef] [PubMed]

2002 (2)

B. J. Lemaire, P. Davidson, J. Ferré, J. P. Jamet, P. Panine, I. Dozov, and J. P. Jolivet, “Outstanding magnetic properties of nematic suspensions of goethite (α-FeOOH) nanorods,” Phys. Rev. Lett.88(12), 125507 (2002).
[CrossRef] [PubMed]

H. Horng, S. Yang, W. Tse, H. Yang, W. Luo, and C. Hong, “Magnetically modulated optical transmission of magnetic fluid films,” J. Magn. Magn. Mater.252, 104–106 (2002).
[CrossRef]

2001 (1)

S. Yang, Y. Chiu, B. Jeang, H. Horng, C. Hong, and H. Yang, “Origin of field-dependent optical transmission of magnetic fluid film,” Appl. Phys. Lett.79(15), 2372–2374 (2001).
[CrossRef]

2000 (1)

M. S. Seehra, V. S. Babu, A. Manivannan, and J. Lynn, “Neutron scattering and magnetic studies of ferrhydrite nanoparticles,” Phys. Rev. B61(5), 3513–3518 (2000).
[CrossRef]

1999 (2)

J. E. Martin, K. M. Hill, and C. P. Tigges, “Magnetic-field-induced optical transmittance in colloidal suspensions,” Phys. Rev. E Stat. Phys. Plasmas Fluids Relat. Interdiscip. Topics59(5), 5676–5692 (1999).
[CrossRef] [PubMed]

K. Zahn, R. Lenke, and G. Maret, “Two-stage melt of paramagnetic colloidal crystals in two dimensions,” Phys. Rev. Lett.82(13), 2721–2724 (1999).
[CrossRef]

1997 (1)

K. Zahn, J. Méndez-Alcaraz, and G. Maret, “Hydrodynamic interactions may enhance the self-diffusion of colloidal particles,” Phys. Rev. Lett.79(1), 175–178 (1997).
[CrossRef]

1987 (1)

S. Taketomi, M. Ukita, M. Mizukami, H. Miyajima, and S. Chikazumi, “Magnetooptical effects of magnetic fluid,” J. Phys. Soc. Jpn.56(9), 3362–3374 (1987).
[CrossRef]

1985 (1)

J. Miles, R. Chantrell, and M. Parker, “Model of magnetic-field-induced ordering in dispersions of fine paramagnetic particles,” J. Appl. Phys.57(8), 4271–4273 (1985).
[CrossRef]

1981 (1)

R. Massart, “Preparation of aqueous magnetic liquids in alkaline and acidic media,” IEEE Trans. Magn.17(2), 1247–1248 (1981).
[CrossRef]

1962 (1)

W. Schuele and V. Deetscreek, “Appearance of weak ferromagnetism in fine particles of antiferromagnetic materials,” J. Appl. Phys.33(3), 1136–1137 (1962).
[CrossRef]

Babu, V. S.

M. S. Seehra, V. S. Babu, A. Manivannan, and J. Lynn, “Neutron scattering and magnetic studies of ferrhydrite nanoparticles,” Phys. Rev. B61(5), 3513–3518 (2000).
[CrossRef]

Badescu, R.

G. Fosa, R. Bădescu, G. Călugăru, and V. Bădescu, “Measuring the transmittivity of light: a tool for testing the quality of magnetic liquids,” Opt. Mater.28(4), 461–465 (2006).
[CrossRef]

Badescu, V.

G. Fosa, R. Bădescu, G. Călugăru, and V. Bădescu, “Measuring the transmittivity of light: a tool for testing the quality of magnetic liquids,” Opt. Mater.28(4), 461–465 (2006).
[CrossRef]

Bai, L.

J. Li, X.-D. Liu, Y.-Q. Lin, Y. Huang, and L. Bai, “Relaxation behavior measuring of transmitted light through ferrofluids film,” Appl. Phys. B82(1), 81–84 (2006).
[CrossRef]

Ballenegger, V.

J. J. Cerdà, E. Elfimova, V. Ballenegger, E. Krutikova, A. Ivanov, and C. Holm, “Behavior of bulky ferrofluids in the diluted low-coupling regime: theory and simulation,” Phys. Rev. E Stat. Nonlin. Soft Matter Phys.81(1), 011501 (2010).
[CrossRef] [PubMed]

Bechinger, C.

K. Mangold, P. Leiderer, and C. Bechinger, “Phase transitions of colloidal monolayers in periodic pinning arrays,” Phys. Rev. Lett.90(15), 158302 (2003).
[CrossRef] [PubMed]

Calugaru, G.

G. Fosa, R. Bădescu, G. Călugăru, and V. Bădescu, “Measuring the transmittivity of light: a tool for testing the quality of magnetic liquids,” Opt. Mater.28(4), 461–465 (2006).
[CrossRef]

Camp, P. J.

E. A. Elfimova, A. O. Ivanov, and P. J. Camp, “Theory and simulation of anisotropic pair correlations in ferrofluids in magnetic fields,” J. Chem. Phys.136(19), 194502 (2012).
[CrossRef] [PubMed]

Cerdà, J. J.

J. J. Cerdà, E. Elfimova, V. Ballenegger, E. Krutikova, A. Ivanov, and C. Holm, “Behavior of bulky ferrofluids in the diluted low-coupling regime: theory and simulation,” Phys. Rev. E Stat. Nonlin. Soft Matter Phys.81(1), 011501 (2010).
[CrossRef] [PubMed]

Cervera-Gontard, L.

D. E. Madsen, L. Cervera-Gontard, T. Kasama, R. E. Dunin-Borkowski, C. B. Koch, M. F. Hansen, C. Frandsen, and S. Mørup, “Magnetic fluctuations in nanosized goethite (α-FeOOH) grains,” J. Phys. Condens. Matter21(1), 016007 (2009).
[CrossRef] [PubMed]

Chantrell, R.

J. Miles, R. Chantrell, and M. Parker, “Model of magnetic-field-induced ordering in dispersions of fine paramagnetic particles,” J. Appl. Phys.57(8), 4271–4273 (1985).
[CrossRef]

Chen, C. S.

H. E. Horng, C. S. Chen, K. L. Fang, S. Y. Yang, J. J. Chieh, C.-Y. Hong, and H. C. Yang, “Tunable optical switch using magnetic fluids,” Appl. Phys. Lett.85(23), 5592–5594 (2004).
[CrossRef]

Chen, J.

K. Wu, Y. Yao, G. Rao, Y. Chen, and J. Chen, “Magnetic field induced optical variation in nanosize iron oxide fluid-particles,” Microelectron. Eng.81(2-4), 323–328 (2005).
[CrossRef]

Chen, X.

Y. Zou, Z. Di, and X. Chen, “Agglomeration response of nanoparticles in magnetic fluid via monitoring of light transmission,” Appl. Opt.50(8), 1087–1090 (2011).
[CrossRef] [PubMed]

D. Zhang, Z. Di, Y. Zou, and X. Chen, “Temperature sensor using ferrofluid thin film,” Microfluid. Nanofluid.7(1), 141–144 (2009).
[CrossRef]

Chen, Y.

K. Wu, Y. Yao, G. Rao, Y. Chen, and J. Chen, “Magnetic field induced optical variation in nanosize iron oxide fluid-particles,” Microelectron. Eng.81(2-4), 323–328 (2005).
[CrossRef]

Chieh, J. J.

H. E. Horng, C. S. Chen, K. L. Fang, S. Y. Yang, J. J. Chieh, C.-Y. Hong, and H. C. Yang, “Tunable optical switch using magnetic fluids,” Appl. Phys. Lett.85(23), 5592–5594 (2004).
[CrossRef]

Chikazumi, S.

S. Taketomi, M. Ukita, M. Mizukami, H. Miyajima, and S. Chikazumi, “Magnetooptical effects of magnetic fluid,” J. Phys. Soc. Jpn.56(9), 3362–3374 (1987).
[CrossRef]

Chiu, Y.

S. Yang, Y. Chiu, B. Jeang, H. Horng, C. Hong, and H. Yang, “Origin of field-dependent optical transmission of magnetic fluid film,” Appl. Phys. Lett.79(15), 2372–2374 (2001).
[CrossRef]

Dai, Q.-F.

H.-D. Deng, J. Liu, W.-R. Zhao, W. Zhang, X.-S. Lin, T. Sun, Q.-F. Dai, L.-J. Wu, S. Lan, and A. V. Gopal, “Enhancement of switching speed by laser-induced clustering of nanoparticles in magnetic fluids,” Appl. Phys. Lett.92(23), 233103 (2008).
[CrossRef]

Davidson, P.

B. J. Lemaire, P. Davidson, J. Ferré, J. P. Jamet, P. Panine, I. Dozov, and J. P. Jolivet, “Outstanding magnetic properties of nematic suspensions of goethite (α-FeOOH) nanorods,” Phys. Rev. Lett.88(12), 125507 (2002).
[CrossRef] [PubMed]

Deetscreek, V.

W. Schuele and V. Deetscreek, “Appearance of weak ferromagnetism in fine particles of antiferromagnetic materials,” J. Appl. Phys.33(3), 1136–1137 (1962).
[CrossRef]

Deng, H.-D.

H.-D. Deng, J. Liu, W.-R. Zhao, W. Zhang, X.-S. Lin, T. Sun, Q.-F. Dai, L.-J. Wu, S. Lan, and A. V. Gopal, “Enhancement of switching speed by laser-induced clustering of nanoparticles in magnetic fluids,” Appl. Phys. Lett.92(23), 233103 (2008).
[CrossRef]

Di, Z.

Y. Zou, Z. Di, and X. Chen, “Agglomeration response of nanoparticles in magnetic fluid via monitoring of light transmission,” Appl. Opt.50(8), 1087–1090 (2011).
[CrossRef] [PubMed]

D. Zhang, Z. Di, Y. Zou, and X. Chen, “Temperature sensor using ferrofluid thin film,” Microfluid. Nanofluid.7(1), 141–144 (2009).
[CrossRef]

Dozov, I.

B. J. Lemaire, P. Davidson, J. Ferré, J. P. Jamet, P. Panine, I. Dozov, and J. P. Jolivet, “Outstanding magnetic properties of nematic suspensions of goethite (α-FeOOH) nanorods,” Phys. Rev. Lett.88(12), 125507 (2002).
[CrossRef] [PubMed]

Dunin-Borkowski, R. E.

D. E. Madsen, L. Cervera-Gontard, T. Kasama, R. E. Dunin-Borkowski, C. B. Koch, M. F. Hansen, C. Frandsen, and S. Mørup, “Magnetic fluctuations in nanosized goethite (α-FeOOH) grains,” J. Phys. Condens. Matter21(1), 016007 (2009).
[CrossRef] [PubMed]

Elfimova, E.

J. J. Cerdà, E. Elfimova, V. Ballenegger, E. Krutikova, A. Ivanov, and C. Holm, “Behavior of bulky ferrofluids in the diluted low-coupling regime: theory and simulation,” Phys. Rev. E Stat. Nonlin. Soft Matter Phys.81(1), 011501 (2010).
[CrossRef] [PubMed]

Elfimova, E. A.

E. A. Elfimova, A. O. Ivanov, and P. J. Camp, “Theory and simulation of anisotropic pair correlations in ferrofluids in magnetic fields,” J. Chem. Phys.136(19), 194502 (2012).
[CrossRef] [PubMed]

Fang, K. L.

H. E. Horng, C. S. Chen, K. L. Fang, S. Y. Yang, J. J. Chieh, C.-Y. Hong, and H. C. Yang, “Tunable optical switch using magnetic fluids,” Appl. Phys. Lett.85(23), 5592–5594 (2004).
[CrossRef]

Fernandes, P.

H. Mukai, S. Shibli, and P. Fernandes, “Orientational order studies by magneto-optical and light-effects in lyotropic liquid crystal,” J. Mol. Liq.135(1-3), 53–56 (2007).
[CrossRef]

Ferré, J.

B. J. Lemaire, P. Davidson, J. Ferré, J. P. Jamet, P. Panine, I. Dozov, and J. P. Jolivet, “Outstanding magnetic properties of nematic suspensions of goethite (α-FeOOH) nanorods,” Phys. Rev. Lett.88(12), 125507 (2002).
[CrossRef] [PubMed]

Fleischer, J.

A. Yu. Zubarev, J. Fleischer, and S. Odenbach, “Towards a theory of dynamical properties of polydisperse magnetic fluids: effect of chain-like aggregates,” Physica A358(2-4), 475–491 (2005).
[CrossRef]

Fosa, G.

G. Fosa, R. Bădescu, G. Călugăru, and V. Bădescu, “Measuring the transmittivity of light: a tool for testing the quality of magnetic liquids,” Opt. Mater.28(4), 461–465 (2006).
[CrossRef]

Frandsen, C.

D. E. Madsen, L. Cervera-Gontard, T. Kasama, R. E. Dunin-Borkowski, C. B. Koch, M. F. Hansen, C. Frandsen, and S. Mørup, “Magnetic fluctuations in nanosized goethite (α-FeOOH) grains,” J. Phys. Condens. Matter21(1), 016007 (2009).
[CrossRef] [PubMed]

Fu, J.

J. Fu, J. Li, Y. Q. Lin, X. D. Liu, H. Miao, and L. H. Lin, “Study of magneto-optical effects in γ-Fe2O3/ZnFe2O4 nanoparticle ferrofluids, using circularly polarized light,” Sci. China Phys. Mech. Astron.55(8), 1404–1411 (2012).
[CrossRef]

H. Miao, J. Li, Y. Lin, X. Liu, Q. Zhang, and J. Fu, “Characterization of γ-Fe2O3 nanoparticles prepared by transformation of α-FeOOH,” Chin. Sci. Bull.56(22), 2383–2388 (2011).
[CrossRef]

J. Li, X. Qiu, Y. Lin, X. Liu, H. Miao, J. Fu, and Q. Zhang, “An optical effect arising from the coupling of the magnetic and dielectric properties of colloidal particles,” Opt. Express (submitted).

Gao, R.

A. Wang, J. Li, and R. Gao, “The structural force arising from magnetic interactions in polydisperse ferrofluids,” Appl. Phys. Lett.94(21), 212501 (2009).
[CrossRef]

J. Li, Y. Huang, X. Liu, Y. Lin, Q. Li, and R. Gao, “Coordinated chain notion resulting in intensity variation of light transmitted through ferrofluid film,” Phys. Lett. A372(46), 6952–6955 (2008).
[CrossRef]

Gopal, A. V.

H.-D. Deng, J. Liu, W.-R. Zhao, W. Zhang, X.-S. Lin, T. Sun, Q.-F. Dai, L.-J. Wu, S. Lan, and A. V. Gopal, “Enhancement of switching speed by laser-induced clustering of nanoparticles in magnetic fluids,” Appl. Phys. Lett.92(23), 233103 (2008).
[CrossRef]

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S. Pu, L. Yao, F. Guan, and M. Liu, “Threshold-tunable optical limiters based on nonlinear refraction in ferrosols,” Opt. Commun.282(5), 908–913 (2009).
[CrossRef]

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D. E. Madsen, L. Cervera-Gontard, T. Kasama, R. E. Dunin-Borkowski, C. B. Koch, M. F. Hansen, C. Frandsen, and S. Mørup, “Magnetic fluctuations in nanosized goethite (α-FeOOH) grains,” J. Phys. Condens. Matter21(1), 016007 (2009).
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J. E. Martin, K. M. Hill, and C. P. Tigges, “Magnetic-field-induced optical transmittance in colloidal suspensions,” Phys. Rev. E Stat. Phys. Plasmas Fluids Relat. Interdiscip. Topics59(5), 5676–5692 (1999).
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J. J. Cerdà, E. Elfimova, V. Ballenegger, E. Krutikova, A. Ivanov, and C. Holm, “Behavior of bulky ferrofluids in the diluted low-coupling regime: theory and simulation,” Phys. Rev. E Stat. Nonlin. Soft Matter Phys.81(1), 011501 (2010).
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H. Horng, S. Yang, W. Tse, H. Yang, W. Luo, and C. Hong, “Magnetically modulated optical transmission of magnetic fluid films,” J. Magn. Magn. Mater.252, 104–106 (2002).
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S. Yang, Y. Chiu, B. Jeang, H. Horng, C. Hong, and H. Yang, “Origin of field-dependent optical transmission of magnetic fluid film,” Appl. Phys. Lett.79(15), 2372–2374 (2001).
[CrossRef]

Hong, C.-Y.

H. E. Horng, C. S. Chen, K. L. Fang, S. Y. Yang, J. J. Chieh, C.-Y. Hong, and H. C. Yang, “Tunable optical switch using magnetic fluids,” Appl. Phys. Lett.85(23), 5592–5594 (2004).
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H. Horng, S. Yang, W. Tse, H. Yang, W. Luo, and C. Hong, “Magnetically modulated optical transmission of magnetic fluid films,” J. Magn. Magn. Mater.252, 104–106 (2002).
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S. Yang, Y. Chiu, B. Jeang, H. Horng, C. Hong, and H. Yang, “Origin of field-dependent optical transmission of magnetic fluid film,” Appl. Phys. Lett.79(15), 2372–2374 (2001).
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Horng, H. E.

H. E. Horng, C. S. Chen, K. L. Fang, S. Y. Yang, J. J. Chieh, C.-Y. Hong, and H. C. Yang, “Tunable optical switch using magnetic fluids,” Appl. Phys. Lett.85(23), 5592–5594 (2004).
[CrossRef]

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J. Li, Y. Huang, X. Liu, Y. Lin, Q. Li, and R. Gao, “Coordinated chain notion resulting in intensity variation of light transmitted through ferrofluid film,” Phys. Lett. A372(46), 6952–6955 (2008).
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J. Li, X.-D. Liu, Y.-Q. Lin, Y. Huang, and L. Bai, “Relaxation behavior measuring of transmitted light through ferrofluids film,” Appl. Phys. B82(1), 81–84 (2006).
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J. J. Cerdà, E. Elfimova, V. Ballenegger, E. Krutikova, A. Ivanov, and C. Holm, “Behavior of bulky ferrofluids in the diluted low-coupling regime: theory and simulation,” Phys. Rev. E Stat. Nonlin. Soft Matter Phys.81(1), 011501 (2010).
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S. Yang, Y. Chiu, B. Jeang, H. Horng, C. Hong, and H. Yang, “Origin of field-dependent optical transmission of magnetic fluid film,” Appl. Phys. Lett.79(15), 2372–2374 (2001).
[CrossRef]

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B. J. Lemaire, P. Davidson, J. Ferré, J. P. Jamet, P. Panine, I. Dozov, and J. P. Jolivet, “Outstanding magnetic properties of nematic suspensions of goethite (α-FeOOH) nanorods,” Phys. Rev. Lett.88(12), 125507 (2002).
[CrossRef] [PubMed]

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D. E. Madsen, L. Cervera-Gontard, T. Kasama, R. E. Dunin-Borkowski, C. B. Koch, M. F. Hansen, C. Frandsen, and S. Mørup, “Magnetic fluctuations in nanosized goethite (α-FeOOH) grains,” J. Phys. Condens. Matter21(1), 016007 (2009).
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D. E. Madsen, L. Cervera-Gontard, T. Kasama, R. E. Dunin-Borkowski, C. B. Koch, M. F. Hansen, C. Frandsen, and S. Mørup, “Magnetic fluctuations in nanosized goethite (α-FeOOH) grains,” J. Phys. Condens. Matter21(1), 016007 (2009).
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J. J. Cerdà, E. Elfimova, V. Ballenegger, E. Krutikova, A. Ivanov, and C. Holm, “Behavior of bulky ferrofluids in the diluted low-coupling regime: theory and simulation,” Phys. Rev. E Stat. Nonlin. Soft Matter Phys.81(1), 011501 (2010).
[CrossRef] [PubMed]

Lan, S.

H.-D. Deng, J. Liu, W.-R. Zhao, W. Zhang, X.-S. Lin, T. Sun, Q.-F. Dai, L.-J. Wu, S. Lan, and A. V. Gopal, “Enhancement of switching speed by laser-induced clustering of nanoparticles in magnetic fluids,” Appl. Phys. Lett.92(23), 233103 (2008).
[CrossRef]

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K. Mangold, P. Leiderer, and C. Bechinger, “Phase transitions of colloidal monolayers in periodic pinning arrays,” Phys. Rev. Lett.90(15), 158302 (2003).
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B. J. Lemaire, P. Davidson, J. Ferré, J. P. Jamet, P. Panine, I. Dozov, and J. P. Jolivet, “Outstanding magnetic properties of nematic suspensions of goethite (α-FeOOH) nanorods,” Phys. Rev. Lett.88(12), 125507 (2002).
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K. Zahn, R. Lenke, and G. Maret, “Two-stage melt of paramagnetic colloidal crystals in two dimensions,” Phys. Rev. Lett.82(13), 2721–2724 (1999).
[CrossRef]

Li, J.

J. Fu, J. Li, Y. Q. Lin, X. D. Liu, H. Miao, and L. H. Lin, “Study of magneto-optical effects in γ-Fe2O3/ZnFe2O4 nanoparticle ferrofluids, using circularly polarized light,” Sci. China Phys. Mech. Astron.55(8), 1404–1411 (2012).
[CrossRef]

H. Miao, J. Li, Y. Lin, X. Liu, Q. Zhang, and J. Fu, “Characterization of γ-Fe2O3 nanoparticles prepared by transformation of α-FeOOH,” Chin. Sci. Bull.56(22), 2383–2388 (2011).
[CrossRef]

A. Wang, J. Li, and R. Gao, “The structural force arising from magnetic interactions in polydisperse ferrofluids,” Appl. Phys. Lett.94(21), 212501 (2009).
[CrossRef]

J. Li, Y. Huang, X. Liu, Y. Lin, Q. Li, and R. Gao, “Coordinated chain notion resulting in intensity variation of light transmitted through ferrofluid film,” Phys. Lett. A372(46), 6952–6955 (2008).
[CrossRef]

J. Li, X.-D. Liu, Y.-Q. Lin, Y. Huang, and L. Bai, “Relaxation behavior measuring of transmitted light through ferrofluids film,” Appl. Phys. B82(1), 81–84 (2006).
[CrossRef]

J. Li, X. Qiu, Y. Lin, X. Liu, H. Miao, J. Fu, and Q. Zhang, “An optical effect arising from the coupling of the magnetic and dielectric properties of colloidal particles,” Opt. Express (submitted).

Li, Q.

J. Li, Y. Huang, X. Liu, Y. Lin, Q. Li, and R. Gao, “Coordinated chain notion resulting in intensity variation of light transmitted through ferrofluid film,” Phys. Lett. A372(46), 6952–6955 (2008).
[CrossRef]

Lin, L. H.

J. Fu, J. Li, Y. Q. Lin, X. D. Liu, H. Miao, and L. H. Lin, “Study of magneto-optical effects in γ-Fe2O3/ZnFe2O4 nanoparticle ferrofluids, using circularly polarized light,” Sci. China Phys. Mech. Astron.55(8), 1404–1411 (2012).
[CrossRef]

Lin, X.-S.

H.-D. Deng, J. Liu, W.-R. Zhao, W. Zhang, X.-S. Lin, T. Sun, Q.-F. Dai, L.-J. Wu, S. Lan, and A. V. Gopal, “Enhancement of switching speed by laser-induced clustering of nanoparticles in magnetic fluids,” Appl. Phys. Lett.92(23), 233103 (2008).
[CrossRef]

Lin, Y.

H. Miao, J. Li, Y. Lin, X. Liu, Q. Zhang, and J. Fu, “Characterization of γ-Fe2O3 nanoparticles prepared by transformation of α-FeOOH,” Chin. Sci. Bull.56(22), 2383–2388 (2011).
[CrossRef]

J. Li, Y. Huang, X. Liu, Y. Lin, Q. Li, and R. Gao, “Coordinated chain notion resulting in intensity variation of light transmitted through ferrofluid film,” Phys. Lett. A372(46), 6952–6955 (2008).
[CrossRef]

J. Li, X. Qiu, Y. Lin, X. Liu, H. Miao, J. Fu, and Q. Zhang, “An optical effect arising from the coupling of the magnetic and dielectric properties of colloidal particles,” Opt. Express (submitted).

Lin, Y. Q.

J. Fu, J. Li, Y. Q. Lin, X. D. Liu, H. Miao, and L. H. Lin, “Study of magneto-optical effects in γ-Fe2O3/ZnFe2O4 nanoparticle ferrofluids, using circularly polarized light,” Sci. China Phys. Mech. Astron.55(8), 1404–1411 (2012).
[CrossRef]

Lin, Y.-Q.

J. Li, X.-D. Liu, Y.-Q. Lin, Y. Huang, and L. Bai, “Relaxation behavior measuring of transmitted light through ferrofluids film,” Appl. Phys. B82(1), 81–84 (2006).
[CrossRef]

Liu, J.

H.-D. Deng, J. Liu, W.-R. Zhao, W. Zhang, X.-S. Lin, T. Sun, Q.-F. Dai, L.-J. Wu, S. Lan, and A. V. Gopal, “Enhancement of switching speed by laser-induced clustering of nanoparticles in magnetic fluids,” Appl. Phys. Lett.92(23), 233103 (2008).
[CrossRef]

Liu, M.

S. Pu, L. Yao, F. Guan, and M. Liu, “Threshold-tunable optical limiters based on nonlinear refraction in ferrosols,” Opt. Commun.282(5), 908–913 (2009).
[CrossRef]

Liu, X.

H. Miao, J. Li, Y. Lin, X. Liu, Q. Zhang, and J. Fu, “Characterization of γ-Fe2O3 nanoparticles prepared by transformation of α-FeOOH,” Chin. Sci. Bull.56(22), 2383–2388 (2011).
[CrossRef]

J. Li, Y. Huang, X. Liu, Y. Lin, Q. Li, and R. Gao, “Coordinated chain notion resulting in intensity variation of light transmitted through ferrofluid film,” Phys. Lett. A372(46), 6952–6955 (2008).
[CrossRef]

J. Li, X. Qiu, Y. Lin, X. Liu, H. Miao, J. Fu, and Q. Zhang, “An optical effect arising from the coupling of the magnetic and dielectric properties of colloidal particles,” Opt. Express (submitted).

Liu, X. D.

J. Fu, J. Li, Y. Q. Lin, X. D. Liu, H. Miao, and L. H. Lin, “Study of magneto-optical effects in γ-Fe2O3/ZnFe2O4 nanoparticle ferrofluids, using circularly polarized light,” Sci. China Phys. Mech. Astron.55(8), 1404–1411 (2012).
[CrossRef]

Liu, X.-D.

J. Li, X.-D. Liu, Y.-Q. Lin, Y. Huang, and L. Bai, “Relaxation behavior measuring of transmitted light through ferrofluids film,” Appl. Phys. B82(1), 81–84 (2006).
[CrossRef]

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B. Huke and M. Lücke, “Magnetic properties of colloidal suspension of interacting magnetic particles,” Rep. Prog. Phys.67(10), 1731–1768 (2004).
[CrossRef]

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H. Horng, S. Yang, W. Tse, H. Yang, W. Luo, and C. Hong, “Magnetically modulated optical transmission of magnetic fluid films,” J. Magn. Magn. Mater.252, 104–106 (2002).
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D. E. Madsen, L. Cervera-Gontard, T. Kasama, R. E. Dunin-Borkowski, C. B. Koch, M. F. Hansen, C. Frandsen, and S. Mørup, “Magnetic fluctuations in nanosized goethite (α-FeOOH) grains,” J. Phys. Condens. Matter21(1), 016007 (2009).
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K. Mangold, P. Leiderer, and C. Bechinger, “Phase transitions of colloidal monolayers in periodic pinning arrays,” Phys. Rev. Lett.90(15), 158302 (2003).
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M. S. Seehra, V. S. Babu, A. Manivannan, and J. Lynn, “Neutron scattering and magnetic studies of ferrhydrite nanoparticles,” Phys. Rev. B61(5), 3513–3518 (2000).
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K. Zahn, R. Lenke, and G. Maret, “Two-stage melt of paramagnetic colloidal crystals in two dimensions,” Phys. Rev. Lett.82(13), 2721–2724 (1999).
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K. Zahn, J. Méndez-Alcaraz, and G. Maret, “Hydrodynamic interactions may enhance the self-diffusion of colloidal particles,” Phys. Rev. Lett.79(1), 175–178 (1997).
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J. E. Martin, K. M. Hill, and C. P. Tigges, “Magnetic-field-induced optical transmittance in colloidal suspensions,” Phys. Rev. E Stat. Phys. Plasmas Fluids Relat. Interdiscip. Topics59(5), 5676–5692 (1999).
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K. Zahn, J. Méndez-Alcaraz, and G. Maret, “Hydrodynamic interactions may enhance the self-diffusion of colloidal particles,” Phys. Rev. Lett.79(1), 175–178 (1997).
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J. Fu, J. Li, Y. Q. Lin, X. D. Liu, H. Miao, and L. H. Lin, “Study of magneto-optical effects in γ-Fe2O3/ZnFe2O4 nanoparticle ferrofluids, using circularly polarized light,” Sci. China Phys. Mech. Astron.55(8), 1404–1411 (2012).
[CrossRef]

H. Miao, J. Li, Y. Lin, X. Liu, Q. Zhang, and J. Fu, “Characterization of γ-Fe2O3 nanoparticles prepared by transformation of α-FeOOH,” Chin. Sci. Bull.56(22), 2383–2388 (2011).
[CrossRef]

J. Li, X. Qiu, Y. Lin, X. Liu, H. Miao, J. Fu, and Q. Zhang, “An optical effect arising from the coupling of the magnetic and dielectric properties of colloidal particles,” Opt. Express (submitted).

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S. Taketomi, M. Ukita, M. Mizukami, H. Miyajima, and S. Chikazumi, “Magnetooptical effects of magnetic fluid,” J. Phys. Soc. Jpn.56(9), 3362–3374 (1987).
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D. E. Madsen, L. Cervera-Gontard, T. Kasama, R. E. Dunin-Borkowski, C. B. Koch, M. F. Hansen, C. Frandsen, and S. Mørup, “Magnetic fluctuations in nanosized goethite (α-FeOOH) grains,” J. Phys. Condens. Matter21(1), 016007 (2009).
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H. Mukai, S. Shibli, and P. Fernandes, “Orientational order studies by magneto-optical and light-effects in lyotropic liquid crystal,” J. Mol. Liq.135(1-3), 53–56 (2007).
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J. Miles, R. Chantrell, and M. Parker, “Model of magnetic-field-induced ordering in dispersions of fine paramagnetic particles,” J. Appl. Phys.57(8), 4271–4273 (1985).
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S. Pu, L. Yao, F. Guan, and M. Liu, “Threshold-tunable optical limiters based on nonlinear refraction in ferrosols,” Opt. Commun.282(5), 908–913 (2009).
[CrossRef]

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J. Li, X. Qiu, Y. Lin, X. Liu, H. Miao, J. Fu, and Q. Zhang, “An optical effect arising from the coupling of the magnetic and dielectric properties of colloidal particles,” Opt. Express (submitted).

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[CrossRef]

Shibli, S.

H. Mukai, S. Shibli, and P. Fernandes, “Orientational order studies by magneto-optical and light-effects in lyotropic liquid crystal,” J. Mol. Liq.135(1-3), 53–56 (2007).
[CrossRef]

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H.-D. Deng, J. Liu, W.-R. Zhao, W. Zhang, X.-S. Lin, T. Sun, Q.-F. Dai, L.-J. Wu, S. Lan, and A. V. Gopal, “Enhancement of switching speed by laser-induced clustering of nanoparticles in magnetic fluids,” Appl. Phys. Lett.92(23), 233103 (2008).
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S. Taketomi, M. Ukita, M. Mizukami, H. Miyajima, and S. Chikazumi, “Magnetooptical effects of magnetic fluid,” J. Phys. Soc. Jpn.56(9), 3362–3374 (1987).
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J. E. Martin, K. M. Hill, and C. P. Tigges, “Magnetic-field-induced optical transmittance in colloidal suspensions,” Phys. Rev. E Stat. Phys. Plasmas Fluids Relat. Interdiscip. Topics59(5), 5676–5692 (1999).
[CrossRef] [PubMed]

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H. Horng, S. Yang, W. Tse, H. Yang, W. Luo, and C. Hong, “Magnetically modulated optical transmission of magnetic fluid films,” J. Magn. Magn. Mater.252, 104–106 (2002).
[CrossRef]

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S. Taketomi, M. Ukita, M. Mizukami, H. Miyajima, and S. Chikazumi, “Magnetooptical effects of magnetic fluid,” J. Phys. Soc. Jpn.56(9), 3362–3374 (1987).
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A. Wang, J. Li, and R. Gao, “The structural force arising from magnetic interactions in polydisperse ferrofluids,” Appl. Phys. Lett.94(21), 212501 (2009).
[CrossRef]

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K. Wu, Y. Yao, G. Rao, Y. Chen, and J. Chen, “Magnetic field induced optical variation in nanosize iron oxide fluid-particles,” Microelectron. Eng.81(2-4), 323–328 (2005).
[CrossRef]

Wu, L.-J.

H.-D. Deng, J. Liu, W.-R. Zhao, W. Zhang, X.-S. Lin, T. Sun, Q.-F. Dai, L.-J. Wu, S. Lan, and A. V. Gopal, “Enhancement of switching speed by laser-induced clustering of nanoparticles in magnetic fluids,” Appl. Phys. Lett.92(23), 233103 (2008).
[CrossRef]

Yang, H.

H. Horng, S. Yang, W. Tse, H. Yang, W. Luo, and C. Hong, “Magnetically modulated optical transmission of magnetic fluid films,” J. Magn. Magn. Mater.252, 104–106 (2002).
[CrossRef]

S. Yang, Y. Chiu, B. Jeang, H. Horng, C. Hong, and H. Yang, “Origin of field-dependent optical transmission of magnetic fluid film,” Appl. Phys. Lett.79(15), 2372–2374 (2001).
[CrossRef]

Yang, H. C.

H. E. Horng, C. S. Chen, K. L. Fang, S. Y. Yang, J. J. Chieh, C.-Y. Hong, and H. C. Yang, “Tunable optical switch using magnetic fluids,” Appl. Phys. Lett.85(23), 5592–5594 (2004).
[CrossRef]

Yang, S.

H. Horng, S. Yang, W. Tse, H. Yang, W. Luo, and C. Hong, “Magnetically modulated optical transmission of magnetic fluid films,” J. Magn. Magn. Mater.252, 104–106 (2002).
[CrossRef]

S. Yang, Y. Chiu, B. Jeang, H. Horng, C. Hong, and H. Yang, “Origin of field-dependent optical transmission of magnetic fluid film,” Appl. Phys. Lett.79(15), 2372–2374 (2001).
[CrossRef]

Yang, S. Y.

H. E. Horng, C. S. Chen, K. L. Fang, S. Y. Yang, J. J. Chieh, C.-Y. Hong, and H. C. Yang, “Tunable optical switch using magnetic fluids,” Appl. Phys. Lett.85(23), 5592–5594 (2004).
[CrossRef]

Yao, L.

S. Pu, L. Yao, F. Guan, and M. Liu, “Threshold-tunable optical limiters based on nonlinear refraction in ferrosols,” Opt. Commun.282(5), 908–913 (2009).
[CrossRef]

Yao, Y.

K. Wu, Y. Yao, G. Rao, Y. Chen, and J. Chen, “Magnetic field induced optical variation in nanosize iron oxide fluid-particles,” Microelectron. Eng.81(2-4), 323–328 (2005).
[CrossRef]

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K. Zahn, R. Lenke, and G. Maret, “Two-stage melt of paramagnetic colloidal crystals in two dimensions,” Phys. Rev. Lett.82(13), 2721–2724 (1999).
[CrossRef]

K. Zahn, J. Méndez-Alcaraz, and G. Maret, “Hydrodynamic interactions may enhance the self-diffusion of colloidal particles,” Phys. Rev. Lett.79(1), 175–178 (1997).
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H. Miao, J. Li, Y. Lin, X. Liu, Q. Zhang, and J. Fu, “Characterization of γ-Fe2O3 nanoparticles prepared by transformation of α-FeOOH,” Chin. Sci. Bull.56(22), 2383–2388 (2011).
[CrossRef]

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Figures (3)

Fig. 1
Fig. 1

Magnetization curve of the powder. The inset is a typical TEM picture of the particles and the size bar is 100 nm.

Fig. 2
Fig. 2

The variation of the transmission T as a function of field strength. The external magnetic field was applied during the period 50 to 100 s.

Fig. 3
Fig. 3

The relation between T and H. The error bars represent the fluctuation region of the T values as Fig. 2 shown.

Equations (11)

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T= (I a /I i )/(I o /I i )= I a /I o
I= I i e τ1
σ abs = 8π d 3 λ 3 E 2 E 1 ( E 2 +2 E 1 ) 2 + E 2 2
n ˜ 2 = ( n+iκ ) 2 = n 2 κ 2 +2inκ
=E'-iE'',E'= n 2 κ 2 ,E''=2nκ
im( n ˜ 2 2 n ˜ 1 2 n ˜ 2 2 +2 n ˜ 1 2 )= 3 E 2 ''2 E 1 ( E 2 ' +2 E 1 ) 2 + E 2 ''2
σ abs = 8π d 3 λ 3 E 2 '' E 1 ( E 2 ' +2 E 1 ) 2 + E 2 ''2
T= I a I o = e lN( σ abs a σ abs o )
T=A e lN σ abs a
E X = E X ' E X '' =( ε x ' + ε z ' ) ( 1 L(α) /α ) /2 + ε y ' L(α) /α i[( ε x '' + ε z '' ) ( 1 L(α) /α ) / 2+ ε y '' L(α) / α]
σ abs a = 8π d 3 λ E 1 [ ε x '' + ε y '' + ε z '' + α 2 ( ε x '' + ε z '' 2 ε y '' ) 30 ] [ 1 3 ( ε x ' + ε y ' + ε z ' )+ α 2 ( ε x ' + ε z ' 2 ε y ' ) 90 +2 E 1 ] 2 + [ 1 3 ( ε x '' + ε y '' + ε z '' )+ α 2 ( ε x '' + ε z '' 2 ε y '' ) 90 ] 2

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