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High pyroelectric properties of (Pb0.87La0.02Ba0.1)(Zr0.75Sn0.25–xTix)O3 ceramics near AFE/RFE phase boundary under DC bias field

Published online by Cambridge University Press:  31 May 2011

Qingfeng Zhang  and
Shenglin Jiang
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
*
a)Address all correspondence to this author. e-mail: [email protected]
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Abstract

(Pb0.87La0.02Ba0.1)(Zr0.75Sn0.25–xTix)O3 (PLBZST, 0.07 ≤ x ≤ 0.09) ceramics were prepared by the conventional solid state reaction process, and their crystal structural, ferroelectric (FE), dielectric, and pyroelectric properties were systemically investigated. A transformation from antiferroelectric (AFE) phase to FE phase was observed when x was higher than 0.08. With the content of Ti increasing from 0.07 to 0.09, the dielectric peak was steeper and the pyroelectric coefficient was greater under direct current (DC) bias fields. As the DC bias field increased from 300 V/mm to 600 V/mm, the pyroelectric coefficient increased from 4500 to 10500 μC/m2·K for PLBZST specimens with 0.09. Thus, large pyroelectric response is beneficial for the development of infrared sensors.

Keywords

CeramicDielectric propertiesSensor
Type
Articles
Information
Journal of Materials Research , Volume 26 , Issue 11 , 14 June 2011 , pp. 1441 - 1445
Copyright
Copyright © Materials Research Society 2011

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