Dynamic magnetization on the low temperature magnetoelectric effect in multiferroic composites

被引：5
|
作者：
Gualdi, Alexandre Jose [1 ]
Zabotto, Fabio Luis [1 ]
Garcia, Ducinei [1 ]
Bhalla, Amar S. [2 ]
Guo, Ruyan [2 ]
de Camargo, Paulo Cesar [1 ]
Aparecido de Oliveira, Adilson Jesus [1 ]
机构：
[1] Univ Fed Sao Carlos, Phys Dept, Sao Carlos, SP, Brazil
[2] Univ Texas San Antonio, Dept Elect & Comp Engn, San Antonio, TX USA
来源：
JOURNAL OF PHYSICS-CONDENSED MATTER | 2018年 / 30卷 / 32期
基金：
巴西圣保罗研究基金会;
关键词：
magnetoelectric; multiferroic composite; magnetostriction; dynamic magnetization; MAGNETOSTRICTION;
D O I：
10.1088/1361-648X/aad151
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
The dependence of frequency and applied magnetic field in the magnetoelectric effect (ME) of the composites 0.68Pb(Mg1/3Nb2/3)-0.32PbTiO(3)/CoFe2O4 (PMN-PT/CFO) and 0.68Pb(Mg1/3Nb2/3)-0.32PbTiO(3)/NiFe2O4 (PMN-PT/NFO) are investigated. The results for PMN-PT/CFO composite, show a hysteretic behavior for the ME coefficient, at low temperatures (5 K), for frequencies higher than 1000 Hz. Contrasting with these results, the ME coefficient for the PMN-PT/NFO shows a well-known peak-peak related with the magnetostriction coefficient. Based on energy levels of stabilization for each ferromagnetic phase, it was possible to explain the ME hysteretic distinct behavior of PMN-PT/CFO, because of the degeneracy in the energy levels, due to the spin-orbit coupling causing changes in the dynamic properties of the magnetoelastic interactions.
引用
收藏
页数：6
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