Interfacial strain-mediated magnetoelectric coupling as reflected in extended X-ray absorption spectra of CoFe2O4-dispersed Pb(Zr,Ti)O3 matrix composites

被引：22
作者：
Park, Jung H. [1 ]
Kim, Min G. [2 ]
Ahn, Suk-Jin [1 ]
Ryu, Sangwoo [1 ]
Jang, Hyun M. [1 ,3 ]
机构：
[1] Pohang Univ Sci & Technol POSTECH, Dept Mat Sci & Engn, Pohang 790784, South Korea
[2] Pohang Univ Sci & Technol POSTECH, Pohang Accelerator Lab, Pohang 790784, South Korea
[3] Pohang Univ Sci & Technol POSTECH, Dept Phys, Pohang 790784, South Korea
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2009年 / 321卷 / 13期
关键词：
Strain-mediated magnetoelectric (ME) coupling; Extended X-ray absorption fine structure; CoFe2O4-Pb(Zr; Ti)O-3; composites; Piezoelectric-magnetostrictive coupling;
D O I：
10.1016/j.jmmm.2008.12.019
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
An atomic-scale picture of the strain-mediated magnetoelectric (ME) coupling is delineated by carefully examining the effect of an applied electric field on the extended X-ray absorption. ne structure (EXAFS) spectra of a CoFe2O4-dispersed Pb(Zr,Ti)O-3 matrix (CFO-PZT) composite. These studies demonstrated a tensile-compressive strain relation between the PZT matrix and the dispersed CFO phase, thereby providing an X-ray spectroscopic evidence of the interfacial strain-mediated ME coupling. Both the dielectric anomaly observed at similar to 480 degrees C and the decrease in the remanent magnetization under an applied electric field support the strain-mediated ME coupling in the CFO-PZT composite. (C() 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码：1971 / 1974
页数：4
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