Article (Scientific journals)
Phonon Raman scattering of RCrO3 perovskites (R = Y, La, Pr, Sm, Gd, Dy Ho, Yb, Lu)
Weber, M. C.; Kreisel, Jens; Thomas, P. A. et al.
2012In Physical Review. B, 85 (5)
Peer reviewed
 

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Abstract :
[en] We report a systematic investigation of orthorhombic perovskite-type RCrO3 powder samples by Raman scattering for nine different rare earth Y, La, Pr, Sm, Gd, Dy, Ho, Yb, and Lu). The room-temperature Raman spectra and the associated phonon mode assignment provide reference data for structural investigation of the whole series of RCrO3 orthochromites and phonon ab-initio calculations. The assignment of the chromite spectra and comparison with Raman data on other orthorhombic perovskites allows correlating the phonon modes with the structural distortions in the RCrO3 series. In particular, two A(g) modes are identified as octahedra rotation soft modes, as their positions scale linearly with the octahedra tilt angle of the CrO6 octahedra.
Disciplines :
Physics
Author, co-author :
Weber, M. C.
Kreisel, Jens ;  University of Luxembourg > Rectorate
Thomas, P. A.
Newton, M.
Sardar, K.
Walton, R. I.
External co-authors :
yes
Language :
English
Title :
Phonon Raman scattering of RCrO3 perovskites (R = Y, La, Pr, Sm, Gd, Dy Ho, Yb, Lu)
Publication date :
2012
Journal title :
Physical Review. B
ISSN :
2469-9950
Volume :
85
Issue :
5
Peer reviewed :
Peer reviewed
Focus Area :
Physics and Materials Science
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