Journal
OPTICAL MATERIALS
Volume 31, Issue 10, Pages 1478-1482Publisher
ELSEVIER
DOI: 10.1016/j.optmat.2009.02.006
Keywords
Spodumene; Optical axes; Dielectric tensor; Optical constants
Categories
Funding
- CNPq
- FAPITEC
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It is presented an analysis of some important optical characteristics of the natural spodumene crystal, based on the first-principles calculations of its electronic structure and complex dielectric tensor. The optical absorption spectrum is interpreted in terms of electronic band structure for incident radiation energy up to 35 eV. The orientation of the three orthogonal principal optical axes is determined relative to the crystallographic axes, and expressed as function of the incident radiation wavelength. Reflectivity and electron energy loss are calculated along the three principal axes. All calculated optical properties are found to be highly anisotropic. (C) 2009 Elsevier B.V. All rights reserved.
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