Analysis of the dynamics of electrocaloric response in ferroelectrics using a ferromagnetic resonator

被引：0

作者：

Semenov, A. A. ^{[1
]}

Pakhomov, O. V. ^{[2
]}

Beliavskiy, P. Yu. ^{[1
]}

Es'kov, A. V. ^{[1
]}

Karmanenko, S. F. ^{[1
]}

Nikitin, A. A. ^{[1
]}

机构：

[1] St Petersburg State Elect Engn Univ LETI, St Petersburg 197376, Russia

[2] St Petersburg State Univ Low Temp & Food Technol, St Petersburg 191002, Russia

来源：

TECHNICAL PHYSICS | 2012年 / 57卷 / 01期

关键词：

High Voltage Pulse; Microstrip Antenna; Ferromagnetic Film; Maxwell Relation; Ferroelectric Capacitor;

D O I：

10.1134/S1063784212010227

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A method is proposed for studying the dynamics of the electrocaloric response of a ferroelectric capacitor to the pulsed action of the electric field, and the results of measurements are reported. The temperature of the capacitor was measured with the help of a ferromagnetic film resonator. The sensitivity of temperature measurements was similar to 10(-4) K/kHz. The recalculated temperature dependence of the resonance frequency showed that the ferroelectric ceramic sample was heated by 0.065 K and was cooled by 0.041 K relative to the thermostat temperature under the action of high-voltage pulses. The relaxation time of the electrocaloric effect of the 0.87PMN-0.13PT relaxor ferroelectric ceramic is 4.5 mu s.

引用

页码：55 / 58

页数：4

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