Negative Poisson's ratio and piezoelectric anisotropy of tetragonal ferroelectric single crystals

被引：13
|
作者：
Aleshin, V. I. [1 ]
Raevski, I. P. [1 ]
机构：
[1] So Fed Univ, Inst Phys Res, Rostov Na Donu 344090, Russia
来源：
JOURNAL OF APPLIED PHYSICS | 2012年 / 112卷 / 11期
关键词：
CUBIC MATERIALS; CERAMICS; COMPOSITES;
D O I：
10.1063/1.4767224
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Orientational dependences of the Poisson's ratio have been calculated for several perovskite tetragonal ferroelectric singe crystals: 0.67Pb(Mg1/3Nb2/3)O-3-0.33PbTiO(3), PbTiO3, and BaTiO3. All these crystals are shown to have negative values of Poisson's ratio in some crystallographic directions thus being so-called partial auxetics. The largest negative Poisson's ratio values possess 0.67Pb(Mg1/3Nb2/3)O-3-0.33PbTiO(3) single crystals. The thermodynamic restrictions for the d(33) and d(31) piezoelectric moduli of the tetragonal crystals have been revealed. The relation between Poisson's ratio and piezoelectric properties of perovskite tetragonal ferroelectric singe crystals is discussed. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4767224]
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页数：8
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