Effect of interface bonding on the phase-transformation-aided magnetoelectric effect in ferromagnetic/ferroelectric composites |
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Authors: | Email author" target="_blank">Rui-Hong?WangEmail author Guo-Jun?Zhang Mai-Qun?Zhao |
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Affiliation: | (1) School of Material Science & Engineering, Xi’an University of Technology, Xi’an, 710048, China |
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Abstract: | Based on modified constitutive equations and finite element method, calculations have been performed to study the effect of
interface bonding on the phase-transition-aided magnetoelectric (ME) response in a new kind of NiMnGa/lead–zirconate–titanate
(PZT) multiferroic laminate composites. The results quantitatively show that the ME effect is remarkably dependent on both
the interface layer characteristics and the interface layer thickness. Stiffer and thinner interface layers are apt to produce
higher ME effect. Calculations are in good agreement with available experimental results. Furthermore, the theoretical approach
was improved to consider the enhancement in the magnetostriction of martensites induced by pre-applied opposing stress. Predictions
reveal that the usage of single crystal Fe7Pd3 as ferromagnetic phase to form magnetoelectric composite with PZT can produce a high ME up to ~1 V/cm Oe. |
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