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Dielectric and electric field–induced pyroelectric behavior of (Pb0.87−0.07xBa0.10+0.07x)La0.02(Zr0.7Sn0.15Ti0.15)O3 ceramics

Published online by Cambridge University Press:  01 June 2011

Qingfeng Zhang ,
Shenglin Jiang  and
Yike Zeng
Qingfeng Zhang
Affiliation:
Department of Electronic Science and Technology, Huazhong University of Science and Technology, Wuhan, 430074, China
Shenglin Jiang*
Affiliation:
Department of Electronic Science and Technology, Huazhong University of Science and Technology, Wuhan, 430074, China
Yike Zeng
Affiliation:
Department of Electronic Science and Technology, Huazhong University of Science and Technology, Wuhan, 430074, China
*
a)Address all correspondence to this author. e-mail: [email protected]
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Abstract

(Pb0.87−0.07xBa0.10+0.07x)La0.02(Zr0.7Sn0.15Ti0.15)O3 ceramics with 0 ≤ x ≤1 were prepared by conventional solid-state reaction process, and their dielectric and electric field–induced pyroelectric properties were systemically investigated. Compared with conventional pyroelectric materials, (Pb0.87−0.07xBa0.10+0.07x)La0.02(Zr0.7Sn0.15Ti0.15)O3 ceramics exhibited higher pyroelectric coefficient and figure of merit, which are beneficial for the development of pyroelectric devices. The specimens with x = 0.65 showed good pyroelectric properties for practical applications. When a 500 V/mm dc bias field was applied, they showed the maximum pyroelectric coefficient of 12,200 μC/m2K and the figure of merit of 106 × 10−5 Pa−0.5 at 45 °C, which are larger than those observed from conventional pyroelectric materials. Improvement of pyroelectric property is beneficial for the development of infrared detectors.

Keywords

CeramicDielectric propertiesSensor
Type
Articles
Information
Journal of Materials Research , Volume 26 , Issue 11 , 14 June 2011 , pp. 1436 - 1440
Copyright
Copyright © Materials Research Society 2011

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