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arXiv · 2512.04509

Magnetocaloric effect measurements in ultrahigh magnetic fields up to 120 T

Reon Ogawa·Masaki Gen·Kazuyuki Matsuhira·Yoshimitsu Kohama
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Abstract

We report proof-of-concept measurements of the magnetocaloric effect (MCE) in ultrahigh magnetic fields up to 120 T for the classical spin-ice compound Ho$_{2}$Ti$_{2}$O$_{7}$. Radio-frequency resistivity measurements using an Au$_{16}$Ge$_{84}$ thin-film thermometer enable us to detect a rapid change in the sample temperature associated with a crystal-field level crossing in the high-field region in addition to a giant MCE at low fields. We discuss a possible delay in the temperature response and outline prospects for more precise MCE measurements in destructive pulsed fields.

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Reon Ogawa, Masaki Gen, Kazuyuki Matsuhira, Yoshimitsu Kohama. 2025-12-04. Magnetocaloric effect measurements in ultrahigh magnetic fields up to 120 T. https://doi.org/10.56646/jjapcp.12.0_011009

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