Abstract

Multiferroic behavior was directly verified in a laminated ferroelectric-ferromagnetic heterostructure consisting of a FeCoV thick film (70 μm) and lead zinc niobate-lead titanate (PZN-PT) single crystal. This unique heterostructure demonstrates a significant converse magnetoelectric (CME) effect corresponding to a CME coupling constant of 31 Oe/kV cm⁻¹ It derives from the soft magnetic and magnetostrictive properties (λ=60 ppm) of FeCoV alloy and the superior electromechanical properties (d32=-2800 pC/N) of PZN-PT crystal. The electric field controlled magnetic hysteresis is discussed in terms of a stress-induced anisotropy field model. The theoretical calculation is within 7% of the measured induced field of 240 Oe.

Notes

Originally published in Applied Physics Letters 94, 082504 (2009). DOI:10.1063/1.3086879 (http://dx.doi.org/10.1063/1.3086879).

Keywords

multiferroic behavior, electric field controlled magnetic hysteresis, FeCoV, lead zinc niobate-lead titanate heterostructure, magnetoelectric coupling

Subject Categories

Hysteresis, Heterostructures

Disciplines

Electromagnetics and photonics

Publisher

American Institute of Physics

Publication Date

2-23-2009

Rights Information

Copyright 2009 American Institute of Physics.

Rights Holder

American Institute of Physics

Additional Files
large_converse_fig1.zip (768 kB)
Figure 1
large_converse_fig2.zip (465 kB)
Figure 2
large_converse_fig3.zip (211 kB)
Figure 3

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Additional Files

large_converse_fig1.zip (768 kB)
Figure 1
large_converse_fig2.zip (465 kB)
Figure 2
large_converse_fig3.zip (211 kB)
Figure 3

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