Enhancement in electro-strain behavior by La3+ substitution in lead free BaZr0.05Ti0.95O3 ceramics

被引：29

作者：

Mahajan, Sandeep ^{[1
]}

Haridas, Divya ^{[2
]}

Sreenivas, K. ^{[3
]}

Thakur, O. P. ^{[4
]}

Prakash, Chandra ^{[5
]}

机构：

[1] C MET, Hyderabad 500051, Andhra Pradesh, India

[2] Keshav Mahavidyalaya, Delhi 110034, India

[3] Univ Delhi, Dept Phys & Astrophys, Delhi 110054, India

[4] Solid State Phys Lab, Electroceram Grp, Delhi 110054, India

[5] DRDO Bhawan, Directorate Extramural Res & Intellectual Propert, New Delhi 110011, India

来源：

MATERIALS LETTERS | 2013年 / 97卷

关键词：

Ceramics; BZT; XRD; Piezoelectric materials; Strain; DIELECTRIC-PROPERTIES; PIEZOELECTRIC PROPERTIES;

D O I：

10.1016/j.matlet.2013.01.057

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Recently, lead-free piezoelectric ceramics have widely attracted interest among the research community, as they are considered to be potential substitutes for lead-based ceramics which causes environmental pollution due to the presence of hazardous lead oxide in them. In the present study we have synthesized La doped Ba1-x/2Lax/3(ZryTi1-y)O-3 (x=0-0.06 in steps of 0.02; y=0, 0.05) ceramics by the conventional solid-state reaction method. Results reveal that electric field induced strain increases from similar to 0.08% to similar to 0.18% (at 40 kV/cm applied field) for x=0.02 and y=0.05 of lanthanum and zirconium substitution respectively compared to undoped BaTiO3. It was also observed that, sample with 2 mol% lanthanum could sustain higher electric field upto 120 kV/cm during strain measurement (without electrical breakdown) and results showed highest strain value of similar to 0.3% in this system. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：40 / 43

页数：4

共 32 条

[11]

Mahajan S, 2010, INT FERROELECTRICS, V119, P1

[12] Ferroelectric relaxor behaviour and impedance spectroscopy of Bi2O3-doped barium zirconium titanate ceramics [J].