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Magnetoelectric coupling effect of polarization regulation in BiFeO_(3)/LaTiO_(3)heterostructures
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作者 Chao Jin Feng-Zhu Ren +3 位作者 Wei Sun Jing-Yu Li Bing Wang Qin-Fen Gu 《Chinese Physics B》 SCIE EI CAS CSCD 2021年第7期387-393,共7页
An effective regulation of the magnetism and interface of ferromagnetic materials is not only of great scientific significance,but also has an urgent need in modern industry.In this work,by using the first-principles ... An effective regulation of the magnetism and interface of ferromagnetic materials is not only of great scientific significance,but also has an urgent need in modern industry.In this work,by using the first-principles calculations,we demonstrate an effective approach to achieve non-volatile electrical control of ferromagnets,which proves this idea in multiferroic heterostructures of ferromagnetic La TiO_(3)and ferroelectric Bi FeO_(3).The results show that the magnetic properties and two-dimensional electron gas concentrations of La TiO_(3)films can be controlled by changing the polarization directions of Bi FeO_(3).The destroyed symmetry being introduced by ferroelectric polarization of the system leads to the transfer and reconstruction of the Ti-3 d electrons,which is the fundamental reason for the changing of magnetic properties.This multiferroic heterostructures will pave the way for non-volatile electrical control of ferromagnets and have potential applications. 展开更多
关键词 first-principles calculations BiFeO_(3)/LaTiO_(3)heterostructures magnetoelectric coupling effect polarization regulation
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Magnetoelectric effects in multiferroic laminated plates with imperfect interfaces 被引量:2
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作者 DJ. Kong C. Ruan-Wu +2 位作者 Y.X. Luo C.L. Zhang Ch. Zhang 《Theoretical & Applied Mechanics Letters》 CAS CSCD 2017年第2期93-99,共7页
Two-dimensional (2D) equations for multiferroic (MF) laminated plates with imperfect interfaces are established in this paper. The interface between two adjacent sublayers, which are not perfectly bonded together,... Two-dimensional (2D) equations for multiferroic (MF) laminated plates with imperfect interfaces are established in this paper. The interface between two adjacent sublayers, which are not perfectly bonded together, is modeled as a general spring-type layer. The mechanical displacements, and the electric and magnetic potentials of the two adjacent layers are assumed to be discontinuous at the interface. As an example, the influences of imperfect interfaces on the magnetoelectric (ME) coupling effects in an MF sandwich plate are investigated with the established 2D governing equations. Numerical results show that the imperfect interfaces have a significant impact on the ME coupling effects in MF laminated structures. 展开更多
关键词 Multiferroic laminated plates Two-dimensional equations Imperfect interfaces magnetoelectric coupling effects
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Large tunable FMR frequency shift by magnetoelectric coupling in oblique-sputtered Fe52.5Co22.5B25.0/PZN-PT multiferroic heterostructure
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作者 时志鹏 刘晓敏 李山东 《Chinese Physics B》 SCIE EI CAS CSCD 2017年第9期445-448,共4页
In this study, we observe a strong inverse magnetoelectric coupling in Fe52.5Co22.5B25.0/PZN-PT multiferroic heterostructure, which produces large electric field(E-field) tunability of microwave magnetic properties.... In this study, we observe a strong inverse magnetoelectric coupling in Fe52.5Co22.5B25.0/PZN-PT multiferroic heterostructure, which produces large electric field(E-field) tunability of microwave magnetic properties. With the increase of the E-field from 0 to 8 kV/cm, the magnetic anisotropy field Heffis dramatically enhanced from 169 to 600 Oe, which further leads to a significant enhancement of ferromagnetic resonance frequency from 4.57 to 8.73 GHz under zero bias magnetic field, and a simultaneous decrease of the damping constant α from 0.021 to 0.0186. These features demonstrate that this multiferroic composite is a promising candidate for fabricating E-field tunable microwave components. 展开更多
关键词 ferromagnetic resonance magnetic anisotropy magnetoelectric coupling effect oblique sputtering
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