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Transition-metal-based magnetic refrigerants for room-temperature applications

Author

Listed:
  • O. Tegus

    (Van der Waals-Zeeman Instituut, Universiteit van Amsterdam)

  • E. Brück

    (Van der Waals-Zeeman Instituut, Universiteit van Amsterdam)

  • K. H. J. Buschow

    (Van der Waals-Zeeman Instituut, Universiteit van Amsterdam)

  • F. R. de Boer

    (Van der Waals-Zeeman Instituut, Universiteit van Amsterdam)

Abstract

Magnetic refrigeration techniques based on the magnetocaloric effect (MCE) have recently been demonstrated as a promising alternative to conventional vapour-cycle refrigeration1. In a material displaying the MCE, the alignment of randomly oriented magnetic moments by an external magnetic field results in heating. This heat can then be removed from the MCE material to the ambient atmosphere by heat transfer. If the magnetic field is subsequently turned off, the magnetic moments randomize again, which leads to cooling of the material below the ambient temperature. Here we report the discovery of a large magnetic entropy change in MnFeP0.45As0.55, a material that has a Curie temperature of about 300 K and which allows magnetic refrigeration at room temperature. The magnetic entropy changes reach values of 14.5 J K-1 kg-1 and 18 J K-1 kg-1 for field changes of 2 T and 5 T, respectively. The so-called giant-MCE material Gd5Ge2Si2 (ref. 2) displays similar entropy changes, but can only be used below room temperature. The refrigerant capacity of our material is also significantly greater than that of Gd (ref. 3). The large entropy change is attributed to a field-induced first-order phase transition enhancing the effect of the applied magnetic field.

Suggested Citation

  • O. Tegus & E. Brück & K. H. J. Buschow & F. R. de Boer, 2002. "Transition-metal-based magnetic refrigerants for room-temperature applications," Nature, Nature, vol. 415(6868), pages 150-152, January.
    • Handle: RePEc:nat:nature:v:415:y:2002:i:6868:d:10.1038_415150a
    DOI: 10.1038/415150a
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    Citations

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    Cited by:

    1. Xia, Zhengrong & Zhang, Yue & Chen, Jincan & Lin, Guoxing, 2008. "Performance analysis and parametric optimal criteria of an irreversible magnetic Brayton-refrigerator," Applied Energy, Elsevier, vol. 85(2-3), pages 159-170, February.
    2. Shin-ichi Ohkoshi & Kosuke Nakagawa & Marie Yoshikiyo & Asuka Namai & Kenta Imoto & Yugo Nagane & Fangda Jia & Olaf Stefanczyk & Hiroko Tokoro & Junhao Wang & Takeshi Sugahara & Kouji Chiba & Kazuhiko, 2023. "Giant adiabatic temperature change and its direct measurement of a barocaloric effect in a charge-transfer solid," Nature Communications, Nature, vol. 14(1), pages 1-12, December.
    3. Chen, Haodong & Ma, Zhihui & Liu, Xianliang & Qiao, Kaiming & Xie, Longlong & Li, Zhenxing & Shen, Jun & Dai, Wei & Ou, Zhiqiang & Yibole, Hargen & Tegus, Ojiyed & Taskaev, Sergey V. & Chu, Ke & Long,, 2022. "Evaluation of thermomagnetic generation performance of classic magnetocaloric materials for harvesting low-grade waste heat," Applied Energy, Elsevier, vol. 306(PA).
    4. Yi-Hong Gao & Dong-Hui Wang & Feng-Xia Hu & Qing-Zhen Huang & You-Ting Song & Shuai-Kang Yuan & Zheng-Ying Tian & Bing-Jie Wang & Zi-Bing Yu & Hou-Bo Zhou & Yue Kan & Yuan Lin & Jing Wang & Yun-liang , 2024. "Low pressure reversibly driving colossal barocaloric effect in two-dimensional vdW alkylammonium halides," Nature Communications, Nature, vol. 15(1), pages 1-13, December.
    5. Balli, M. & Sari, O. & Mahmed, C. & Besson, Ch. & Bonhote, Ph. & Duc, D. & Forchelet, J., 2012. "A pre-industrial magnetic cooling system for room temperature application," Applied Energy, Elsevier, vol. 98(C), pages 556-561.
    6. Xin Tang & H. Sepehri-Amin & N. Terada & A. Martin-Cid & I. Kurniawan & S. Kobayashi & Y. Kotani & H. Takeya & J. Lai & Y. Matsushita & T. Ohkubo & Y. Miura & T. Nakamura & K. Hono, 2022. "Magnetic refrigeration material operating at a full temperature range required for hydrogen liquefaction," Nature Communications, Nature, vol. 13(1), pages 1-8, December.

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