Open AccessJAHN-TELLER EFFECT AND THE STRUCTURAL PHASE TRANSITIONS IN LiNbO3(III)
Author(s) -
WU JIAN-BIN,
WANG ZHI-CHENG
Publication year - 1991
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.40.1320
Subject(s) - jahn–teller effect , octahedron , ferroelectricity , phase transition , condensed matter physics , materials science , phase (matter) , range (aeronautics) , physics , ion , quantum mechanics , optoelectronics , dielectric , composite material
In this paper, the ferroelectric couplings in LiNbO3 have been studied by raking account of the Jahn-Teller effect of NbO6-octahedra. Based on the pseudo-spin model, we qualitatively interpret the 10 phase transitions in LiNbO3 in the temperature range of 290-1221℃.