Dielectric Behavior of Antiferroelectric Lead Lanthanum Zirconate Titanate Stannate Ceramics under Bias Voltage and Hydrostatic Pressure

戴中华; 姚熹; 徐卓

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Dielectric Behavior of Antiferroelectric Lead Lanthanum Zirconate Titanate Stannate Ceramics under Bias Voltage and Hydrostatic Pressure

更新时间：2025-12-08

- Dielectric Behavior of Antiferroelectric Lead Lanthanum Zirconate Titanate Stannate Ceramics under Bias Voltage and Hydrostatic Pressure
- Vol. 41, Issue 2, Pages: 228-231+244(2007)
- 作者机构：
  
  西安交通大学电子材料与器件研究所,西安,710049
- 作者简介：
- 基金信息：
- DOI：
  CLC： TQ174.6
- Online First：10 February 2007，
  
  Published：2007
- 稿件说明：
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戴中华, 姚熹, 徐卓. Dielectric Behavior of Antiferroelectric Lead Lanthanum Zirconate Titanate Stannate Ceramics under Bias Voltage and Hydrostatic Pressure[J]. 2007, 41(2): 228-231+244.
DOI：

戴中华, 姚熹, 徐卓. Dielectric Behavior of Antiferroelectric Lead Lanthanum Zirconate Titanate Stannate Ceramics under Bias Voltage and Hydrostatic Pressure[J]. 2007, 41(2): 228-231+244. DOI：

摘要

采用固态烧结工艺制备了位于反铁电(AFE)/铁电(FE)相界附近的PbLa(Zr

Ti)O

(PLZST)反铁电陶瓷样品.通过测定样品的相对介电常数及损耗与各种参量的关系

得到了等静压力及偏置电压对反铁电体铁电/反铁电相变及反铁电/顺电(PE)相变温度影响的规律.研究发现:极化了的PLZST反铁电材料在一定等静压力的作用下

随着偏置电压的增加其峰值相对介电常数增大

相对介电常数最大值对应的温度降低

FE/AFE转变温度上升

AFE/PE转变温度下降; 当等静压力为0.1 MPa时

单位偏置电压引起的居里点变化率为-1 ℃/kV

单位偏置电压引起的FE/AFE相变温度变化率为5.2 ℃/kV

当等静压力为60 MPa时

分别为-2.2 ℃/kV和3 ℃/kV.

Abstract

Antiferroelectric PbLa(Zr

Ti)O

(PLZST)ceramics sample near the ferroelectric(FE)-antiferroelectric(AFE)phase boundary are prepared by a traditional solid-state reaction process. The influences of the bias voltage and hydrostatic pressure on FE/AFE and AFE/PE phase transition and transition temperature of these PLZST ceramics obtained by measuring the relation between the relative dielectric constants and loss and various parameters of samples. It is found that under certain hydrostatic pressure

the dielectric constants of polarized antiferroelectric PLZST increase

and the temperature corresponding to the maximum of relative dielectric constants decreases with in

creasing bias voltage. At the same time

the FE/AFE transition temperature increases and AFE/PE transition temperature decreases. Under the hydrostatic pressure of 0.1 MPa

the change rate of Curie temperature caused by unit bias voltage of this ceramics is -1 ℃/kV and the change rate of FE/AFE transition temperature caused by unit bias voltage is 5.2 ℃/kV; under the pressure of 60 MPa

are -2.2 ℃/kV and 3 ℃/kV respectively.

关键词

Keywords

references

Pan W Y, Pan C Q, Zhang Q M, et al. Principles and applications of ferroelectrics and related materials [M]. Oxford: Clarendon Press, 1977:221.

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