Phase transition regulation and caloric effect

Yuan LIN, Jiazheng HAO, Kaiming QIAO, Yihong GAO, Fengxia HU, Jing WANG, Tongyun ZHAO, Baogen SHEN

Front. Energy ›› 2023, Vol. 17 ›› Issue (4) : 463-477.

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Front. Energy ›› 2023, Vol. 17 ›› Issue (4) : 463-477. DOI: 10.1007/s11708-023-0860-1
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Phase transition regulation and caloric effect

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Abstract

Solid state refrigeration based on caloric effect is regarded as a potential candidate for replacing vapor-compression refrigeration. Numerous methods have been proposed to optimize the refrigeration properties of caloric materials, of which single field tuning as a relatively simple way has been systemically studied. However, single field tuning with few tunable parameters usually obtains an excellent performance in one specific aspect at the cost of worsening the performance in other aspects, like attaining a large caloric effect with narrowing the transition temperature range and introducing hysteresis. Because of the shortcomings of the caloric effect driven by a single field, multifield tuning on multicaloric materials that have a coupling between different ferro-orders came into view. This review mainly focuses on recent studies that apply this method to improve the cooling performance of materials, consisting of enlarging caloric effects, reducing hysteresis losses, adjusting transition temperatures, and widening transition temperature spans, which indicate that further progress can be made in the application of this method. Furthermore, research on the sign of lattice and spin contributions to the magnetocaloric effect found new phonon evolution mechanisms, calling for more attention on multicaloric effects. Other progress including improving cyclability of FeRh alloys by introducing second phases and realizing a large reversible barocaloric effect by hybridizing carbon chains and inorganic groups is described in brief.

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Keywords

phase transition regulation / caloric effect / solid state refrigeration

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Yuan LIN, Jiazheng HAO, Kaiming QIAO, Yihong GAO, Fengxia HU, Jing WANG, Tongyun ZHAO, Baogen SHEN. Phase transition regulation and caloric effect. Front. Energy, 2023, 17(4): 463‒477 https://doi.org/10.1007/s11708-023-0860-1
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Acknowledgements

This work was supported by the National Key R&D Program of China (Grant Nos. 2020YFA0711502, 2021YFB3501202, 2019YFA0704900, 2018YFA0305704, and 2022YFB3505201), the National Natural Sciences Foundation of China (Grant Nos. 52088101, 92263202, 51971240, and 52101228), and the Strategic Priority Research Program B (Grant No. XDB33030200) and the Key Research Program (Grant Nos. ZDRW-CN-2021-3, 112111KYSB20180013) of the Chinese Academy of Sciences (CAS).

Competing interests

The authors declare that they have no competing interests.

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