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中国物理学会期刊
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Jahn-Teller效应和LiNbO3的结构相变(Ⅲ)

物理学报, 1991, 40(8): 1320-1328.
DOI: 10.7498/aps.40.1320
CSTR: 32037.14.aps.40.1320

JAHN-TELLER EFFECT AND THE STRUCTURAL PHASE TRANSITIONS IN LiNbO3(III)

Acta Phys. Sin., 1991, 40(8): 1320-1328.
DOI: 10.7498/aps.40.1320
CSTR: 32037.14.aps.40.1320
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  • 摘要

    本文从NbO6八面体的Jahn-Teller效应出发,用等价的自旋作用模型,定性地说明LiNbO3在290℃到1221℃的10个相变点。结果与实验相符。

     

    Abstract

    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℃.

     

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