Open AccessStudy of the dipole rotation path of BaTiO3 single crystal based on dielectric properties in structure phase transition
Author(s) -
Xiaobing Li,
Zhao Xiangyong,
Yaojin Wang,
Feifei Wang,
Chao Chen,
Haosu Luo
Publication year - 2009
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.58.4225
Subject(s) - condensed matter physics , dielectric , tetragonal crystal system , dipole , orthorhombic crystal system , rotation (mathematics) , materials science , phase transition , phase (matter) , crystal (programming language) , physics , diffraction , optics , geometry , quantum mechanics , optoelectronics , mathematics , computer science , programming language
The temperature-dependence of dielectric-constant of BaTiO3 single crystals in 〈001〉 direction is measured under different voltages and frequencies. The crystal experiences rhombohedral-orthorhombic-tetragonal phase transition with the increase of temperature. Base on the assumption of dipoles rotation and the experimental results of dielectric constant, a model is proposed, which holds that the dipoles rotation path can be inferred by the dielectric properties of the adjacent structure phase of BaTiO3. The dipoles rotation paths of rhombohedral, orthorhombic and tetragonal phases are given. The influences of bias dc electric field on the dipoles rotation path are discussed.