Emergent magneto-inductance effect in permalloy thin films on flexible polycarbonate substrates at room temperature

Yu Matsushima, Zijing Zhang, Yuri Ohashi, Tsunagu Hatakeyama, Gang Xiao, Takumi Funato, Mamoru Matsuo, Hideo Kaiju

研究成果: Article査読

抄録

Emergent inductance has attracted significant interest for its relevance in both interesting fundamental physics and practical applications in magnetic devices that demand miniaturization without compromising inductance. In this Letter, we report the discovery of a stepwise magnetic field-induced emergent magneto-inductance (EML) effect in Permalloy (Py) thin films deposited on polycarbonate (PC) substrates. Remarkably, Py/PC devices exhibit an exceptionally large inductance variation exceeding 1 μH at room temperature, and intriguingly, a sign reversal of inductance occurs around the zero magnetic field. The dependencies of the EML effect on frequency, step magnetic field changes, and film width can be explained from the theory based on the spin motive force driven by transient domain wall motion. This study opens up exciting avenues for advancing our understanding of emergent inductance in fundamental physics and paves the way for practical applications in flexible magnetic devices.

本文言語English
論文番号022404
ジャーナルApplied Physics Letters
124
2
DOI
出版ステータスPublished - 2024 1月 8

ASJC Scopus subject areas

  • 物理学および天文学(その他)

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