Article Nonvolatile magneto-thermal switching driven by vortex trapping in commercial In-Sn solder

Poonam Rani ; Takumi Murakami ; Yuto Watanabe ; Hossein Sepehri-Amin SAMURAI ORCID ; Hiroto Arima ; Aichi Yamashita ; Yoshikazu Mizuguchi

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Poonam Rani, Takumi Murakami, Yuto Watanabe, Hossein Sepehri-Amin, Hiroto Arima, Aichi Yamashita, Yoshikazu Mizuguchi. Nonvolatile magneto-thermal switching driven by vortex trapping in commercial In-Sn solder. Applied Physics Express. 2025, 18 (3), 033001. https://doi.org/10.35848/1882-0786/adb6ee

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(abstract)

Magneto-thermal switching (MTS) is a key technology for efficient thermal management. Recently, large MTS with nonvolatility has been observed in Sn-Pb solders where phase separation, the different superconducting transition temperatures (Tc) of Sn and Pb, and magnetic-flux trapping are the causes of the nonvolatile MTS. To further understand the mechanism and to obtain the strategy for enhancing switching ratio, exploration of new phase-separated superconductors with nonvolatile MTS is needed. Here, we show that the In52Sn48 commercial solder is a phase-separated superconducting composite with two Tc and traps vortices after field cooling.

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Keyword: Magneto-thermal switching, thermal management, superconducting composites

Date published: 2025-03-01

Publisher: IOP Publishing

Journal:

  • Applied Physics Express (ISSN: 18820778) vol. 18 issue. 3 033001

Funding:

  • JST-ERATO JPMJER2201

Manuscript type: Publisher's version (Version of record)

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First published URL: https://doi.org/10.35848/1882-0786/adb6ee

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Updated at: 2025-03-13 08:30:17 +0900

Published on MDR: 2025-03-13 08:30:17 +0900

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