DataVXAdvanced MaterialsPaper
journal article·2019-09Open access

Giant and Reversible Inverse Barocaloric Effects near Room Temperature in Ferromagnetic MnCoGeB0.03

Araceli Aznar, Pol Lloveras, Ji‐Yeob Kim, Enric Stern‐Taulats, María Barrio, Josep Lluís Tamarit, César F. Sánchez‐Valdés, José Luis Sánchez Llamazares, Neil D. Mathur, Xavier Moya

Advanced Materials· Volume 31· Issue 37
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Source abstract

Abstract

Abstract Hydrostatic pressure represents an inexpensive and practical method of driving caloric effects in brittle magnetocaloric materials, which display first‐order magnetostructural phase transitions whose large latent heats are traditionally accessed using applied magnetic fields. Here, moderate changes of hydrostatic pressure are used to drive giant and reversible inverse barocaloric effects near room temperature in the notoriously brittle magnetocaloric material MnCoGeB0.03. The barocaloric effects compare favorably with those observed in barocaloric materials that are magnetic. The inevitable fragmentation provides a large surface for heat exchange with pressure‐transmitting media, permitting good access to barocaloric effects in cooling devices.
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Research context

OpenAlex topics: Magnetic and transport properties of perovskites and related materials · Magnetic Properties of Alloys · Shape Memory Alloy Transformations

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Grup de Caracterització de Materials Departament de Física EEBE and Barcelona Research Center in Multiscale Science and Engineering Universitat Politècnica de Catalunya Eduard Maristany 10–14 08019 Barcelona Catalonia Spain

Department of Materials Science University of Cambridge Cambridge CB3 0FS UK

División Multidisciplinaria Ciudad Universitaria Universidad Autónoma de Ciudad Juárez (UACJ) calle José de Jesús Macías Delgado #18100 Ciudad Juárez 32579 Chihuahua México

Instituto Potosino de Investigación Científica y Tecnológica A.C. Camino a la Presa San José No 2055, Col. Lomas 4ª sección San Luis Potosí S.L.P. 78216 México

Funding

Ministerio de Economía y Competitividad · Agència de Gestió d’Ajuts Universitaris i de Recerca · European Research Council

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