TY - JOUR
T1 - FERROELASTIC TRANSITION IN SOME SCHEELITE-TYPE CRYSTALS.
AU - Ishibashi, Yoshihiro
AU - Hara, Kazuhiro
AU - Sawada, Akitatsu
PY - 1987/5
Y1 - 1987/5
N2 - The experimental results of the Brillouin scattering in several scheelite-type crystals are briefly reviewed. The high pressure Raman scattering studies of LaNbO//4 and NdNbO//4 crystals were recently carried out and have revealed that the behavior of their lowest frequency optical modes is quite different from the one reported for BiVO//4. A lattice model for the ferroelastic transition from a tetragonal phase is presented and discussed.
AB - The experimental results of the Brillouin scattering in several scheelite-type crystals are briefly reviewed. The high pressure Raman scattering studies of LaNbO//4 and NdNbO//4 crystals were recently carried out and have revealed that the behavior of their lowest frequency optical modes is quite different from the one reported for BiVO//4. A lattice model for the ferroelastic transition from a tetragonal phase is presented and discussed.
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M3 - Article
VL - 150
SP - 258
EP - 264
JO - Physica B: Physics of Condensed Matter & C: Atomic, Molecular and Plasma Physics, Optics
JF - Physica B: Physics of Condensed Matter & C: Atomic, Molecular and Plasma Physics, Optics
SN - 0378-4363
IS - 1-2
ER -