Thermally-induced loss of piezoelectricity in ferroelectric Na0.5Bi0.5TiO3-BaTiO3

被引：39

作者：

Foronda, Humberto ^{[1
,2
]}

Deluca, Marco ^{[3
,4
]}

Aksel, Elena ^{[1
,5
]}

Forrester, Jennifer S. ^{[1
]}

Jones, Jacob L. ^{[1
,6
]}

机构：

[1] Univ Florida, Dept Mat Sci & Engn, Gainesville, FL 32611 USA

[2] Univ Calif Santa Barbara, Dept Mat, Santa Barbara, CA 93106 USA

[3] Mt Univ Leoben, Inst Struktur & Funkt Keram, A-8700 Leoben, Austria

[4] Leoben Forsch GmbH, Mat Ctr, A-8700 Leoben, Austria

[5] Tokyo Inst Technol, Grad Sch Sci & Technol, Tokyo 1528552, Japan

[6] N Carolina State Univ, Dept Mat Sci & Engn, Raleigh, NC 27695 USA

来源：

MATERIALS LETTERS | 2014年 / 115卷

基金：

美国国家科学基金会;

关键词：

Piezoelectric materials; Lead-free; Thermal depoling; Raman spectroscopy; Sodium bismuth; Sodium bismuth titanate-barium titanate; PHASE-DIAGRAM; CERAMICS; SYSTEM; NA1/2BI1/2TIO3; SPECTROSCOPY; RAMAN;

D O I：

10.1016/j.matlet.2013.10.041

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The loss of piezoelectricity in ferroelectric sodium bismuth titanate (NBT) in solid solution with barium titanate ((1-x)NBT-xBT) is studied by means of thermal depoling and Raman spectroscopy. In the range 0 <= x <= 13%, the highest thermal stability of the piezoelectric coefficients is found in x=13%, for which a longitudinal piezoelectric coefficient of 118 pC/N was nearly temperature-independent up to a maximum temperature of 165 degrees C. The composition nearest the morphotropic phase boundary, x=6%, exhibited the lowest thermal depoling temperature of 107 degrees C. Depoling of this composition is suggested to arise from a second order phase transition evidenced in the temperature-dependent Raman spectra. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：132 / 135

页数：4

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