Abstract

Far-infrared transmission spectra of dysprosium and terbium iron garnet were measured between 10 and 150 cm<sup>-1</sup> at temperatures less than 20 K by Fourier-transform spectroscopy. The temperature and magnetic-field dependence of the transmission spectrum of dysprosium iron garnet was also observed. For dysprosium iron garnet, absorption lines at 22.6, 59.5, 44.0, and 65 cm<sup>-1</sup> were identified as low-lying electronic levels. Magnetic resonances at 13.5, 17.0, and 28.0 cm<sup>-1</sup> and phonon absorption lines at 81, 107, 112, and 145 cm<sup>-1</sup> were found. For terbium iron garnet, two electronic lines at 36 and 68.5 cm<sup>-1</sup> and four phonon lines at 80.5, 108, 112, and 145 cm<sup>-1</sup> were found.

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  1. J. F. Dillon, Jr., J. Phys. Radium 20, 374 (1959).
  2. A. J. Sievers and M. Tinkham, Phys. Rev. 129, 1995 (1963).
  3. P. L. Richards and J. P. Remeika, J. Appl. Phys. 37, 1310 (1966).
  4. N. T. McDevitt, J. Opt. Soc. Am. 59, 1240 (1969).
  5. L. Neel, R. Pauthenet, and B. Dreyfus, Progress in Low Temperature Physics, 4, edited by C. J. Gorter (North- Holland, Amsterdam, 1964), p. 344.
  6. M. Tinkham, Phys. Rev. 124, 311 (1961).
  7. E. E. Russell and E. E. Bell, Infrared Phys. 6, 75 (1966).
  8. Supplied by Hitachi Ltd., Tokyo, Japan.
  9. Supplied by Molectron, Sunnyvale, Calif.
  10. J. Yamamoto and H. Yoshinaga, Jap. J. Appl. Phys. 7, 498 (1968).
  11. The computer analysis was performed by E. E. Bell.
  12. B. T. Smith, Far-Infrared Spectra of Some Orthoferrites Thesis (The Ohio State University, 1973) (Xerox University Microfilms, Ann Arbor, Mich., Abstract No. 2254-B; Order No. 73-26 912).
  13. A. B. Harris and H. Meyer, Phys. Rev. 127, 101 (1962).
  14. T. D. Knight and D. L. Huber, J. Appl. Phys. 39, 1069 (1968).

Bell, E. E.

The computer analysis was performed by E. E. Bell.

Bell, E. E.

E. E. Russell and E. E. Bell, Infrared Phys. 6, 75 (1966).

Dillon, Jr., J. F.

J. F. Dillon, Jr., J. Phys. Radium 20, 374 (1959).

Dreyfus, B.

L. Neel, R. Pauthenet, and B. Dreyfus, Progress in Low Temperature Physics, 4, edited by C. J. Gorter (North- Holland, Amsterdam, 1964), p. 344.

Harris, A. B.

A. B. Harris and H. Meyer, Phys. Rev. 127, 101 (1962).

Huber, D. L.

T. D. Knight and D. L. Huber, J. Appl. Phys. 39, 1069 (1968).

Knight, T. D.

T. D. Knight and D. L. Huber, J. Appl. Phys. 39, 1069 (1968).

McDevitt, N. T.

N. T. McDevitt, J. Opt. Soc. Am. 59, 1240 (1969).

Meyer, H.

A. B. Harris and H. Meyer, Phys. Rev. 127, 101 (1962).

Neel, L.

L. Neel, R. Pauthenet, and B. Dreyfus, Progress in Low Temperature Physics, 4, edited by C. J. Gorter (North- Holland, Amsterdam, 1964), p. 344.

Pauthenet, R.

L. Neel, R. Pauthenet, and B. Dreyfus, Progress in Low Temperature Physics, 4, edited by C. J. Gorter (North- Holland, Amsterdam, 1964), p. 344.

Remeika, J. P.

P. L. Richards and J. P. Remeika, J. Appl. Phys. 37, 1310 (1966).

Richards, P. L.

P. L. Richards and J. P. Remeika, J. Appl. Phys. 37, 1310 (1966).

Russell, E. E.

E. E. Russell and E. E. Bell, Infrared Phys. 6, 75 (1966).

Sievers, A. J.

A. J. Sievers and M. Tinkham, Phys. Rev. 129, 1995 (1963).

Smith, B. T.

B. T. Smith, Far-Infrared Spectra of Some Orthoferrites Thesis (The Ohio State University, 1973) (Xerox University Microfilms, Ann Arbor, Mich., Abstract No. 2254-B; Order No. 73-26 912).

Tinkham, M.

A. J. Sievers and M. Tinkham, Phys. Rev. 129, 1995 (1963).

M. Tinkham, Phys. Rev. 124, 311 (1961).

Yamamoto, J.

J. Yamamoto and H. Yoshinaga, Jap. J. Appl. Phys. 7, 498 (1968).

Yoshinaga, H.

J. Yamamoto and H. Yoshinaga, Jap. J. Appl. Phys. 7, 498 (1968).

Other (14)

J. F. Dillon, Jr., J. Phys. Radium 20, 374 (1959).

A. J. Sievers and M. Tinkham, Phys. Rev. 129, 1995 (1963).

P. L. Richards and J. P. Remeika, J. Appl. Phys. 37, 1310 (1966).

N. T. McDevitt, J. Opt. Soc. Am. 59, 1240 (1969).

L. Neel, R. Pauthenet, and B. Dreyfus, Progress in Low Temperature Physics, 4, edited by C. J. Gorter (North- Holland, Amsterdam, 1964), p. 344.

M. Tinkham, Phys. Rev. 124, 311 (1961).

E. E. Russell and E. E. Bell, Infrared Phys. 6, 75 (1966).

Supplied by Hitachi Ltd., Tokyo, Japan.

Supplied by Molectron, Sunnyvale, Calif.

J. Yamamoto and H. Yoshinaga, Jap. J. Appl. Phys. 7, 498 (1968).

The computer analysis was performed by E. E. Bell.

B. T. Smith, Far-Infrared Spectra of Some Orthoferrites Thesis (The Ohio State University, 1973) (Xerox University Microfilms, Ann Arbor, Mich., Abstract No. 2254-B; Order No. 73-26 912).

A. B. Harris and H. Meyer, Phys. Rev. 127, 101 (1962).

T. D. Knight and D. L. Huber, J. Appl. Phys. 39, 1069 (1968).

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