混合多铁氧体结构中 Dzyaloshinskii-Moriya 相互作用的电场操纵

IF 2.1 3区工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Transactions on Magnetics Pub Date : 2024-09-02 DOI:10.1109/TMAG.2024.3453591

O. G. Udalov;R. V. Gorev;N. S. Gusev;A. V. Sadovnikov;M. V. Sapozhnikov

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引用次数: 0

摘要

通过在 PMN-PT 晶体的[001]和[110]切面上沉积铂/钴/铂多层膜，制备了混合多铁素体薄膜。通过布里渊光散射（BLS）方法，实验研究了该体系中界面 Dzyaloshinskii-Moriya 相互作用（iDMI）对外加电场的依赖性。在施加电场时，观察到 iDMI 常数的强烈变化（从 -0.2 到 0.8 mJ/m2）。在[001]切口的情况下，观察到的 iDMI 变化具有各向同性的特征，而在[110]切口的情况下，它们是各向异性的，这与 PMN-PT 变形的对称性相对应。iDMI 的变化伴随着各种不同寻常的畴结构和天元晶格的形成。用电场对 DMI 进行外部控制，为操纵拓扑磁孤子（如天幕）开辟了道路。

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Electric Field Manipulation of the Dzyaloshinskii–Moriya Interaction in Hybrid Multiferroic Structures

Hybrid multiferroic films are fabricated by depositing Pt/Co/Pt multilayers onto [001] and [110] cuts of PMN-PT crystal. The dependence of the interfacial Dzyaloshinskii–Moriya interaction (iDMI) on applied electric field is experimentally investigated in the system by the Brillouin light scattering (BLS) method. A strong variation (from −0.2 to 0.8 mJ/m2) of the iDMI constant is observed when the electric field is applied. In the case of [001] cut, the observed changes in the iDMI have an isotropic character, while in the case of [110] cut, they are anisotropic, which corresponds to the symmetry of the PMN-PT deformations. The change in the iDMI is accompanied by the formation of various unusual domain structures and skyrmion lattices. External control of the DMI with an electric field opens the way to manipulate topological magnetic solitons (such as skyrmions), which are promising objects for information processing and storage.

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来源期刊

IEEE Transactions on Magnetics 工程技术-工程：电子与电气

CiteScore

4.00

自引率

14.30%

发文量

565

审稿时长

4.1 months

期刊介绍： Science and technology related to the basic physics and engineering of magnetism, magnetic materials, applied magnetics, magnetic devices, and magnetic data storage. The IEEE Transactions on Magnetics publishes scholarly articles of archival value as well as tutorial expositions and critical reviews of classical subjects and topics of current interest.