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Giant multicaloric response of bulk Fe49Rh51

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We report on the multicaloric response of the Fe49Rh51 alloy under the combined application of hydrostatic pressure and magnetic field. Experimental data are complemented by a mean field 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 field 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 field calculations remarkably reproduce experimental results.

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Physical Review B, 2017, vol. 95, num. 10

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Articles publicats en revistes (Física de la Matèria Condensada)

# metadata.dc.title[].value
Giant multicaloric response of bulk Fe49Rh51