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Published July 24, 2025 | Version Published
Journal Article Open

Magnetoelectric coupling and its impact on the multicaloric effect

Creators

  • 1. Institute of Science Tokyo
  • 2. ROR icon RIKEN Center for Emergent Matter Science
  • 3. ROR icon California Institute of Technology
  • 4. ROR icon University of Tokyo

Abstract

The multicaloric effect, which represents the reversible entropy change that occurs when both external magnetic and electric fields are applied, is an interesting phenomenon characteristic to multiferroics. Targeting the multicaloric effect in the typical multiferroic (Fe_(0.95)⁢Zn_(0.05))₂⁢Mo₃O₈, we experimentally evaluate the isothermal entropy change due to a magnetoelectric cross correlation. A pronounced cross-correlation-derived isothermal entropy change is found at the magnetic ordering temperature. By exploring the literature, we suggest that a magnetic phase transition may tend to involve a considerably larger cross-correlation-derived entropy change than that derived from the linear magnetoelectric effect.

Copyright and License

©2025 American Physical Society.

Acknowledgement

K.I. and K.M. acknowledge Dr. M. Kriener for assisting with the high-vacuum mode in the adiabatic temperature measurement. This work was supported by JSPS KAKENHI Grants No. JP23K13054 and No. JP24K08227.

Contributions

K.M. and F.K. designed the research; K.I. and K.M. performed the research; K.I. and K.M. analyzed the data; K.I., K.M., and F.K. wrote the paper; T.N. commented on the experimental setup and analysis; T.K. and Y.T. provided the samples. K.I. and K.M. contributed equally to this work.

Supplemental Material

Supplemental Material includes the results of the polarization measurements, the multi-field contribution from the dielectric properties in (Fe0.95Zn0.05)2Mo3O8, and the multi-field contribution in various multiferroics.

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Additional details

Related works

Is supplemented by
Supplemental Material: https://journals.aps.org/prb/supplemental/10.1103/bk9n-cc51/multiCE_SI_0717_revised.pdf (URL)

Funding

Japan Society for the Promotion of Science
JP23K13054
Japan Society for the Promotion of Science
JP24K08227

Dates

Accepted
2025-07-07

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Caltech groups
Division of Physics, Mathematics and Astronomy (PMA)
Publication Status
Published