Magnetoelectric effects in ferromagnetic films on ferroelectric substrates

被引：19

作者：

Filippov, D. A. ^{[1
,3
]}

Srinivasan, G. ^{[1
]}

Gupta, A. ^{[2
]}

机构：

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

[2] Univ Alabama, Ctr Mat Informat Technol, Tuscaloosa, AL 35487 USA

[3] Novgorod Sate Univ, Veliky Novgorod, Russia

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 2008年 / 20卷 / 42期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1088/0953-8984/20/42/425206

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Theories for magnetoelectric (ME) effects in a bilayer consisting of magnetostrictive film on piezoelectric substrate are discussed. The ME coupling at low frequencies and at mechanical resonance due to acoustic modes have been estimated and applied to the specific case of a thin film of permendur or nickel ferrite on lead zirconate titanate (PZT). Both ideal and non-ideal interface coupling are considered. The theory predicts strong ME coupling for magnetic films on piezoelectric substrates. At low frequency, the ME coefficient is maximum when PZT is 2-4 times as thick as the magnetic film. The ME coefficient, for ideal coupling, shows resonance enhancement at a single frequency. For non-ideal interface coupling, enhancement is expected at two frequencies corresponding to coupled oscillations in magnetic and piezoelectric layers.

引用

页数：4

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