POLARIZED INFRARED REFLECTIVITY SPECTRA OF SRLAALO4 AND SRLAGAO4 SINGLE-CRYSTALS

Authors
KAMBA S BUIXADERAS E PAJACZKOWSKA A
Citation
S. Kamba et al., POLARIZED INFRARED REFLECTIVITY SPECTRA OF SRLAALO4 AND SRLAGAO4 SINGLE-CRYSTALS, Physica status solidi. a, Applied research, 168(1), 1998, pp. 317-324
Citations number
20
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physica status solidi. a, Applied research → ACNP
ISSN journal
00318965
Volume
168
Issue
1
Year of publication
1998
Pages
317 - 324
Database
ISI
SICI code
0031-8965(1998)168:1<317:PIRSOS>2.0.ZU;2-M
Abstract
Polarized infrared reflectivity spectra of SrLaAlO4 and SrLaGaO4 singl e crystals were obtained at room temperature between 30 and 2000 cm(-1 ). All the spectra were fitted with the factorized form of the dielect ric function. The number of observed polar phonons is higher than corr esponds to the prediction from the factor-group analysis because of th e disorder of strontium and lanthanum atoms and two-phonon absorption.