期刊
ADVANCED MATERIALS
卷 30, 期 40, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.201802902
关键词
interfaces; ionic liquid gating; magnetism; magnetoelectric coupling; yttrium iron garnets
类别
资金
- Natural Science Foundation of China [51472199, 51602244, 11534015]
- Natural Science Foundation of Shaanxi Province [2015JM5196]
- National 111 Project of China [B14040]
- Fundamental Research Funds for the Central Universities
- International Joint Laboratory for Micro/Nano Manufacturing and Measurement Technologies
- China Recruitment Program of Global Youth Experts
- Natural Sciences and Engineering Research Council (NSERC) of Canada
The voltage modulation of yttrium iron garnet (YIG) is of practical and theoretical significance; due to its advantages of compactness, high-speed response, and energy efficiency, it can be used for various spintronic applications, including spin-Hall, spin-pumping, and spin-Seebeck effects. In this study, a significant ferromagnetic resonance change is achieved within the YIG/Pt bilayer heterostructures uisng ionic modulation, which is accomplished by modifying the interfacial magnetism in the deposited capping platinum layer. With a small voltage bias of 4.5 V, a large ferromagnetic field shift of 690 Oe is achieved in heterostructures of YIG (13 nm)/Pt (3 nm)/(ionic liquid, IL)/(Au capacitor). The remarkable magnetoelectric (ME) tunability comes from the additional and voltage-induced ferromagnetic ordering, caused by uncompensated d-orbital electrons in the Pt metal layer. Confirmed by first-principle calculations, this finding paves the way for novel voltage-tunable YIG-based spintronics.
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