journal article·2025-11Open access

Electric‐Field Control of Low Damping Constant in Epitaxial Co 2 FeSi/LiNbO 3 Multiferroic Heterostructures

Shinya Yamada, Takamasa Usami, Sachio Komori, Yoshio Miura, Kazuto Yamanoi, Yukio Nozaki, Tomoyasu Taniyama, Kohei Hamaya

Advanced Science· Volume 12· Issue 41

Abstract

Abstract To develop electric‐field control of magnetization dynamics in a magnetic material for magnonic devices with low‐energy power consumption operation, an epitaxial half‐metallic Co 2 FeSi/LiNbO 3 multiferroic heterostructure is experimentally demonstrated. The epitaxial Co 2 FeSi/LiNbO 3 multiferroic heterostructure shows a low damping constant (α) of ∼0.006 and the value of α is decreased to ∼0.004 by applying an electric field. This means that the magnetization dynamics in an epitaxial half‐metallic Co 2 FeSi layer can be controlled via the piezoelectric strain of LiNbO 3 through the magnetoelastic coupling. This study leads to a way toward the realization of magnonic devices with low‐energy power consumption operation.
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Research context

OpenAlex topics: Multiferroics and related materials · Heusler alloys: electronic and magnetic properties · Magnetic and transport properties of perovskites and related materials

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Center for Spintronics Research Network Graduate School of Engineering Science The University of Osaka 1‐3 Machikaneyama Toyonaka Osaka 560‐8531 Japan

Spintronics Research Network Division Institute for Open and Transdisciplinary Research Initiatives The University of Osaka 2‐1 Yamadaoka Suita Osaka 565‐0871 Japan

Department of Physics Nagoya University Chikusa‐ku Nagoya Aichi 464‐8602 Japan

Faculty of Electrical Engineering and Electronics Kyoto Institute of Technology Matsugasaki, Sakyo‐ku Kyoto 606‐8585 Japan

Research Center for Magnetic and Spintronic Materials National Institute for Materials Science (NIMS) Tsukuba Ibaraki 305‐0047 Japan

Department of Physics Keio University Yokohama Kanagawa 223‐8522 Japan

Center for Spintronics Research Network Keio University Yokohama Kanagawa 223‐8522 Japan

Funding

Core Research for Evolutional Science and Technology · Japan Science and Technology Agency · Japan Society for the Promotion of Science · Fusion Oriented REsearch for disruptive Science and Technology · Kazuchika Okura Memorial Foundation

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