Pyroelectric effects in magnetoelectric multilayer composites

被引：24

作者：

Fetisov, YK ^{[1
]}

Bush, AA

Kamentsev, KE

Srinivasan, G

机构：

[1] Moscow Inst Radio Engn Elect & Automat, Moscow 117454, Russia

[2] Oakland Univ, Dept Phys, Rochester, MI 48309 USA

来源：

SOLID STATE COMMUNICATIONS | 2004年 / 132卷 / 05期

基金：

美国国家科学基金会;

关键词：

ferrite; manganite; PZT; magnetoelectric; pyroelectric;

D O I：

10.1016/j.ssc.2004.07.070

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Magnetoelectric and pyroelectric properties have been investigated in heterostructures of nickel zinc ferrite (NZFO)-lead zirconate titanate (PZT) and lanthanum calcium manganite (LCMO)-PZT. The magnetoelectric (ME) coupling, mediated by mechanical strain, is found to be two orders of magnitude stronger in NZFO-PZT than in LCMO-PZT. The pyroelectric effect is investigated by measuring the current through the sample as the temperature is varied at 0.1 K/s. For NZFO-PZT the pyroelectric coefficient is in the range 0.2-15 nC/cm(2) K, depending on the temperature. A much weaker current is observed in LCMO-PZT. A reversal in the current direction is detected when the thermal cycle is switched from heating to cooling. The pyroelectric coefficient is found to scale with the strength of ME interactions. A clear correlation between pyroelectric current and ME interactions is evident from the results. (C) 2004 Elsevier Ltd. All rights reserved.

引用

页码：319 / 324

页数：6

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