Magnetoelectric coupling and its impact on the multicaloric effect

2025/07/25 by Ino, Kentaro, Matsuura, Keisuke, Nomoto, Tetsuya +3
#FOS: Physical sciences #Materials Science (cond-mat.mtrl-sci) #Strongly Correlated Electrons (cond-mat.str-el)

paper · doi:10.48550/arxiv.2507.19126

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_0.95Zn_0.05)₂Mo₃O₈, 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.

Citations

• Materials, physics, and systems for multicaloric cooling
• Nonreciprocal thermal transport in a multiferroic helimagnet
• Rebuttal of "The multicaloric effect in multiferroic materials"

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