MC Type Phase Structure and Temperature-Induced MC-C Transition in the As-Grown PMN-0.36PT Single Crystal

被引：6

作者：

Xu, Chao ^{[1
]}

Li, Qiang ^{[1
]}

Yan, Qingfeng ^{[1
]}

Luo, Nengneng ^{[1
]}

Zhang, Yiling ^{[2
]}

Chu, Xiangcheng ^{[2
]}

机构：

[1] Tsinghua Univ, Dept Chem, Beijing 100084, Peoples R China

[2] Tsinghua Univ, State Key Lab New Ceram & Fine Proc, Beijing 100084, Peoples R China

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 2016年 / 99卷 / 08期

基金：

中国国家自然科学基金;

关键词：

lead magnesium niobates; ferroelectricity/ferroelectric materials; domains; phase transformations; ELECTROMECHANICAL PROPERTIES; FERROELECTRIC PEROVSKITE; POLARIZATION ROTATION; MONOCLINIC PHASE; BOUNDARIES; MECHANISM; BEHAVIOR; TITANATE; ORIGIN; STRAIN;

D O I：

10.1111/jace.14267

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The phase structure in the as-grown PMN-0.36PT single crystal was studied and the temperature-induced domain evolution was investigated using a polarized light microscope (PLM). The crystal is identified to be MC type monoclinic based on the PLM results and tends to transform to cubic (C) phase directly through polarization rotation. The MC phase is metastable below Curie temperature (TC), but prone to tetragonal phase upon electric field poling or high-temperature annealing. We suppose that the formation of the MC phase structure is associated with the strain gradient originated from Ti4+ segregation and the special MC-C phase transformation style is mediated by the corresponding residual ferroelastic strain stored within the as-formed domain structure.

引用

页码：2706 / 2712

页数：7

共 22 条

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