Large magnetic entropy change in La0.75Ca0.25MnO3

Large magnetic entropy change in La0.75Ca0.25MnO3

Magnetic entropy change of La0.75Ca0.25MnO3 with different particle size has been investigated. Magnetic entropy change ∼4.7 J/kg K larger than that of Gd has been observed at 224 K under a magnetic field of 1.5 T in comparatively big particles. This phenomenon of large magnetic entropy change indic...

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Veröffentlicht in:Applied physics letters 1997-02, Vol.70 (7), p.904-905
Hauptverfasser: Guo, Z. B., Zhang, J. R., Huang, H., Ding, W. P., Du, Y. W.
Format: Artikel
Sprache:eng
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Zusammenfassung:Magnetic entropy change of La0.75Ca0.25MnO3 with different particle size has been investigated. Magnetic entropy change ∼4.7 J/kg K larger than that of Gd has been observed at 224 K under a magnetic field of 1.5 T in comparatively big particles. This phenomenon of large magnetic entropy change indicates that the perovskite-type manganese oxides have potential applications for magnetic refrigerants in high temperature.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.118309