Theory of magnetoelectric effects at microwave frequencies in a piezoelectric/magnetostrictive multilayer composite

M. I. Bichurin, I. A. Kornev, V. M. Petrov, A. S. Tatarenko, Yu. V. Kiliba, and G. Srinivasan
Phys. Rev. B 64, 094409 – Published 6 August 2001
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Abstract

A phenomenological theory is proposed to treat the magnetoelectric (ME) coupling at frequencies corresponding to ferromagnetic resonance in a multilayer composite consisting of alternate layers of piezoelectric and magnetostrictive phases. We discuss two models: (i) a simple two-layer (bimorph) structure and (ii) a generalized approach in which the multilayer structure is considered to be a homogeneous medium. Expressions for the stress induced shift δH in the ferromagnetic resonance field due to an applied electric field E have been obtained for both cases. For a bimorph, δH is directly proportional to the product of the applied electric field and the ME coupling constant. For a nickel ferrite–lead zirconate titanate (PZT) two layer structure, the theory predicts a factor of 5 stronger effect than in yttrium iron garnet-PZT. When the composite is considered to be a homogeneous medium, the corresponding shift δH is given by 2M0 (B33B31) E, where M0 is the composite magnetization and B’s are the ME coefficients. For this model, a method for the calculation of magnetoelectric coefficients from experimental data is presented.

  • Received 22 March 2001

DOI:https://doi.org/10.1103/PhysRevB.64.094409

©2001 American Physical Society

Authors & Affiliations

M. I. Bichurin, I. A. Kornev, V. M. Petrov, A. S. Tatarenko, and Yu. V. Kiliba

  • Department of Physics Engineering, Novgorod State University, 173003 Novgorod, ul. Bolshaya Sankt-Peterburgskaya 41, Russia

G. Srinivasan

  • Physics Department, Oakland University, Rochester, Michigan 48309

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Vol. 64, Iss. 9 — 1 September 2001

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