Microwave magnetoelectric effects in bilayers of single crystal ferrite and functionally graded piezoelectric

被引：16
作者：
Petrov, V. M. [1 ]
Srinivasan, G. [1 ]
Galkina, A. [2 ]
机构：
[1] Oakland Univ, Dept Phys, Rochester, MI 48309 USA
[2] Novgorod State Univ, Veliky Novgorod 173003, Russia
来源：
JOURNAL OF APPLIED PHYSICS | 2008年 / 104卷 / 11期
基金：
俄罗斯基础研究基金会; 美国国家科学基金会;
关键词：
D O I：
10.1063/1.3033486
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
A model is discussed for magnetoelectric interactions under ferromagnetic resonance (FMR) in bilayers of a ferrite and a functionally graded piezoelectric. A linear variation in the in-plane piezoelectric coefficient is assumed. A dc electric field E applied perpendicular to the sample plane will then result in a varying in-plane strain that is transferred to the ferrite and manifests a uniaxial magnetic anisotropy. Expressions have been obtained for microwave magnetic susceptibility, taking into account the effect of grading and substrate clamping and applied to specific cases of yttrium iron garnet/lead magnesium niobate-lead titanate (PMN-PT) and nickel ferrite/PMN-PT. The model predicts unique E dependence of microwave magnetic susceptibility and FMR absorption. With increasing E, the susceptibility is predicted to decrease, and there will be broadening of FMR absorption. The results are of interest for electric field tunable ferrite-piezoelectric microwave devices. (C) 2008 American Institute of Physics. [DOI: 10.1063/1.3033486]
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页数：5
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