Interfacial strain-mediated magnetoelectric coupling as reflected in extended X-ray absorption spectra of CoFe@@d2@O@@d4@-dispersed Pb(Zr,Ti)O@@d3@ matrix composites

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 fine structure (EXAFS) spectra of a CoFe@@d2@O@@d4@-dispersed Pb(Zr,Ti)O@@d3@ matrix (CFO-PZT) composite. These s...

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Bibliographic Details
Published in:Journal of magnetism and magnetic materials 2009-07, Vol.321 (13), p.1971-1974
Main Authors: Park, Jung H, Kim, Min G, Ahn, Suk-Jin, Ryu, Sangwoo, Jang, Hyun M
Format: Article
Language:English
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Summary: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 fine structure (EXAFS) spectra of a CoFe@@d2@O@@d4@-dispersed Pb(Zr,Ti)O@@d3@ 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 [not, vert, similar]480 'C and the decrease in the remanent magnetization under an applied electric field support the strain-mediated ME coupling in the CFO-PZT composite.
ISSN:0304-8853
DOI:10.1016/j.jmmm.2008.12.019