Abstract

The optical constants of sapphire crystal (α-Al2O3) and amorphous Al2O3 in the soft x-ray region (67–85 eV) around the aluminum LII,III absorption edge (73.1 eV) are determined by angle-dependent x-ray reflectivity. The differences between the optical constant values of both the samples are discussed. The fine structures obtained in the absorption of crystalline sapphire are explained. An absorption feature at 70.2 eV is observed for the first time for crystalline alumina. Both datasets are compared to the tabulated values of Henke et al. [At. Data Nucl. Data Tables 54, 181 (1993)], Weaver et al. [Physik Daten, Physics Data: Optical Properties of Metals (Fach-information zentrum, 1981), Vols. 18-1 and 18-2], and [Handbook of Optical Constants of Solids II (Academic, 1991)].

© 2012 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Optical properties of zirconium carbide in 60–200  Å wavelength region using x-ray reflectivity technique

Amol Singh, Mohammed H. Modi, and G. S. Lodha
Appl. Opt. 54(2) 253-258 (2015)

Optical constants of e-beam-deposited zirconium dioxide measured in the 55–150 Å wavelength region using the reflectivity technique

Amol Singh, Mangalika Sinha, R. K. Gupta, and Mohammed H. Modi
Appl. Opt. 55(12) 3170-3175 (2016)

Optical properties of indium phosphide in the 50–200Å wavelength region using a reflectivity technique

P. N. Rao, Mohammed H. Modi, and G. S. Lodha
Appl. Opt. 49(28) 5378-5383 (2010)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (9)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Equations (7)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription