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arXiv · 2007.15277

High-temperature dependence of anomalous Ettingshausen effect in SmCo$_5$-type permanent magnets

Asuka Miura·Keisuke Masuda·Takamasa Hirai·Ryo Iguchi·Takeshi Seki·Yoshio Miura·Hiroki Tsuchiura·Koki Takanashi·Ken-ichi Uchida
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Abstract

The anomalous Ettingshausen effect (AEE) in SmCo$_5$-type permanent magnets has been investigated in the high-temperature range from room temperature to around 600 K. The anomalous Ettingshausen coefficient of the SmCo$_5$ and (SmGd)Co$_5$ magnets monotonically increases with increasing the temperature and shows the similar temperature dependence, while the coefficient of SmCo$_5$ is slightly larger than that of (SmGd)Co$_5$ at high temperatures. The dimensionless figure of merit for AEE in SmCo$_5$ at high temperatures is much greater than the previous record obtained for the anomalous Nernst effect. The observed high-temperature behavior of AEE is discussed based on the first-principles calculations of transverse transport coefficients.

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Asuka Miura, Keisuke Masuda, Takamasa Hirai, Ryo Iguchi, Takeshi Seki, Yoshio Miura, Hiroki Tsuchiura, Koki Takanashi, Ken-ichi Uchida. 2020-07-30. High-temperature dependence of anomalous Ettingshausen effect in SmCo$_5$-type permanent magnets. https://doi.org/10.1063/5.0023111

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