Finite-size-effect on a very large length scale in NBT-based lead-free piezoelectrics

被引：8

作者：

Mishra, Anupam ^{[1
]}

Khatua, Dipak Kumar ^{[1
]}

Adhikary, Gobinda Das ^{[1
]}

Kumar, Naveen ^{[1
]}

Shankar, Uma ^{[1
]}

Ranjan, Rajeev ^{[1
]}

机构：

[1] Indian Inst Sci, Dept Mat Engn, Bangalore 560012, Karnataka, India

来源：

JOURNAL OF ADVANCED DIELECTRICS | 2019年 / 9卷 / 05期

关键词：

Lead-free piezoelectrics; Na0.5Bi0.5TiO3; size effect; crystal structure; depolarization temperature; PHASE-TRANSITIONS; STRUCTURAL MECHANISM; FERROELECTRICS; DEPENDENCE;

D O I：

10.1142/S2010135X19500358

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Na0.5Bi0.5TiO3-based lead-free piezoelectrics are considered for potential replacement of the lead-based commercial piezoceramics in high-power transducer applications. We have examined the role of grain size in influencing the structural-polar inhomogeneity of stoichiometric and off-stoichiometric Na0.5Bi0.5TiO3 (NBT), and its morphotropic-phase-boundary (MPB) derivative 0.94Na(0.5)Bi(0.5)TiO(3)-0.06BaTiO(3) (NBT-6BT). Our study reveals that size effect comes into play in these systems on a very large length scale (on the scale of microns) considerably affecting its global structure and properties.

引用

页数：7

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