Large field-induced magnetocaloric effect and magnetoresistance in ErNiSi

Sachin Gupta; R. Rawat; K. G. Suresh

doi:10.1063/1.4887336

Large field-induced magnetocaloric effect and magnetoresistance in ErNiSi

Sachin Gupta, R. Rawat, K. G. Suresh

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52 Citations (Scopus)

Abstract

Large magnetocaloric effect (MCE) and magnetoresistance (MR) together with negligible hysteresis loss have been observed in ErNiSi compound, which undergoes metamagnetic transition at low temperatures. Magnetization, heat capacity, and resistivity measurements confirm the metamagnetic transition. Both MCE and MR follow H² dependence in the paramagnetic regime. The maximum value of isothermal entropy change (Δ S_M) and MR for a field change of 50 kOe are found to be 19.1 J/kg K and ∼ 34%, respectively. Large MCE with negligible magnetic hysteresis loss could make this material promising for low temperature magnetic refrigeration.

Original language	English
Article number	012403
Journal	Applied Physics Letters
Volume	105
Issue number	1
DOIs	https://doi.org/10.1063/1.4887336
Publication status	Published - 2014 Jul 7

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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abstract = "Large magnetocaloric effect (MCE) and magnetoresistance (MR) together with negligible hysteresis loss have been observed in ErNiSi compound, which undergoes metamagnetic transition at low temperatures. Magnetization, heat capacity, and resistivity measurements confirm the metamagnetic transition. Both MCE and MR follow H2 dependence in the paramagnetic regime. The maximum value of isothermal entropy change (Δ SM) and MR for a field change of 50 kOe are found to be 19.1 J/kg K and ∼ 34%, respectively. Large MCE with negligible magnetic hysteresis loss could make this material promising for low temperature magnetic refrigeration.",

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AB - Large magnetocaloric effect (MCE) and magnetoresistance (MR) together with negligible hysteresis loss have been observed in ErNiSi compound, which undergoes metamagnetic transition at low temperatures. Magnetization, heat capacity, and resistivity measurements confirm the metamagnetic transition. Both MCE and MR follow H2 dependence in the paramagnetic regime. The maximum value of isothermal entropy change (Δ SM) and MR for a field change of 50 kOe are found to be 19.1 J/kg K and ∼ 34%, respectively. Large MCE with negligible magnetic hysteresis loss could make this material promising for low temperature magnetic refrigeration.

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Large field-induced magnetocaloric effect and magnetoresistance in ErNiSi

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