Electric field induced structural transformations across the morphotropic phase boundary of (1-x)Bi(Mg1/2Ti1/2)O3-xPbTiO3 piezoceramics

被引：7
作者：
Upadhyay, Ashutosh [1 ]
Singh, Akhilesh Kumar [1 ]
机构：
[1] Banaras Hindu Univ, Indian Inst Technol, Sch Mat Sci & Technol, Varanasi 221005, Uttar Pradesh, India
来源：
SCRIPTA MATERIALIA | 2016年 / 115卷
关键词：
Morphotropic phase boundary; Electric field induced phase transformation; Domain reorientation; Piezoceramics; TEMPERATURE-DEPENDENCE; PIEZOELECTRIC SYSTEM; CRYSTAL-STRUCTURE;
D O I：
10.1016/j.scriptamat.2015.12.036
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Structural investigation of electric field poled (1-x)Bi(Mg1/2Ti1/2)O-3-xPbTiO(3) piezoceramics across morphotropic phase boundary reveals significant modifications in crystal structure. Tetragonal compositions show domain extension and domain reorientation along c -axis. The compositions having coexisting tetragonal and monoclinic phases in the unpoled state exhibit modification in relative proportion of the two phases in addition to domain reorientation and extension. The pseudocubic monoclinic phase outside the phase coexistence region undergoes isostructural phase transformation to long range monoclinic phase with significantly larger lattice parameters than that in the unpoled state. After poling pseudocubic compositions exhibit highest polarization due to transformation into long range monoclinic structure. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：71 / 74
页数：4
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