journal article·2022-06

“Two-steps” process in the first-order transformation of giant magnetocaloric materials

V. Hardy, R. Hamane, F. Veillon, M. Risser, F. Guillou

Acta Materialia· Volume 231
Publisher page

Abstract

The most promising materials for applications in magnetic refrigeration exhibit a large entropy change at a first-order ferromagnetic transition. Often, it has been observed that the transformation proceeds via two bursts surrounding a regime of slow transformation. Within a simplified framework, the present article reports on a thermodynamic model able to account for this “two-steps” response. This model is confronted to magnetic and calorimetric data recorded in the magnetocaloric compound LaFe11.4Si1.31Co0.29 .
Source: openaire · Quality: candidate unverified · Source record ↗

Research context

OpenAlex topics: Magnetic and transport properties of perovskites and related materials · Rare-earth and actinide compounds · Magnetic Properties of Alloys

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