Giant multicaloric response of bulk Fe49Rh51

Article

关键词: IRON-RHODIUM ALLOY;    SOLID-STATE REFRIGERATION;    PHASE-TRANSITIONS;    FERH;    PRESSURE;    COMPOUND;   

DOI  :  10.1103/PhysRevB.95.104424

来源: SCIE

【 摘 要 】

We report on the multicaloric response of the Fe49Rh51 alloy under the combined application of hydrostatic pressure and magnetic held. Experimental data are complemented by a mean held model that takes into account the interplay between structural and magnetic degrees of freedom. A large multicaloric strength has been found for this alloy, and it is shown that a suitable combination of pressure and magnetic held enables the sign of the entropy change to be reversed and thus the multicaloric effect can be tuned from conventional to inverse. It is also shown that an extended temperature window for the multicaloric effect can be achieved by taking advantage of the coupling between structure and magnetism which enables a cross response of the alloy under the application of different external fields. Mean held calculations remarkably reproduce experimental results.

【 授权许可】

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