Temperature-dependent polarized far-infrared optical properties of CaNdAlO4 single crystal

Polarized near-normal incident infrared reflectivity spectra of (1 0 0) CaNdAlO4 single crystal along the ab plane and c-axis have been measured under different temperatures in the frequency region between 100 and 6000 cm-1. All the spectra are fitted with the factorized form of the dielectric funct...

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Bibliographic Details
Published in:Physica. B, Condensed matter Condensed matter, 2008-10, Vol.403 (19-20), p.3394-3398
Main Authors: MA, J. Y, BI, C. Z, FANG, X, KAMRAN, M, ZHAO, H. Y, ZHAO, B. R, QIU, X. G
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Condensed matter: structure, mechanical and thermal properties
Exact sciences and technology
Infrared and raman spectra and scattering
Lattice dynamics
Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation
Other nonmetallic inorganics
Phonon states and bands, normal modes, and phonon dispersion
Phonons and vibrations in crystal lattices
Physics
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Summary:Polarized near-normal incident infrared reflectivity spectra of (1 0 0) CaNdAlO4 single crystal along the ab plane and c-axis have been measured under different temperatures in the frequency region between 100 and 6000 cm-1. All the spectra are fitted with the factorized form of the dielectric function. Assignment of different phonon modes has been done in both crystalline directions. The dielectric property and optical conductivity of the CaNdAlO4 crystal are analyzed. The differences between CaNbAlO4 and SrLaAlO4 are discussed with respect to vibration frequency and static optical permittivities.
ISSN:0921-4526
1873-2135
DOI:10.1016/j.physb.2008.04.039