Giant and reversible inverse barocaloric effects near room temperature in ferromagnetic MnCoGeB0.03
| Autor: | Pol Lloveras, Enric Stern-Taulats, C.F. Sánchez-Valdés, Jiyeob Kim, Jose Luis Sanchez Llamazares, Neil D. Mathur, Xavier Moya, Maria Barrio, Josep-Lluís Tamarit, Araceli Aznar |
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| Přispěvatelé: | Universitat Politècnica de Catalunya. Doctorat en Física Computacional i Aplicada, Universitat Politècnica de Catalunya. Departament de Física, Universitat Politècnica de Catalunya. GCM - Grup de Caracterització de Materials |
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Phase transition
Materials science Condensed matter physics Mechanical Engineering Hydrostatic pressure Inverse Materials -- Propietats tèrmiques 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Enginyeria dels materials [Àrees temàtiques de la UPC] 7. Clean energy 01 natural sciences 3. Good health 0104 chemical sciences Magnetic field Brittleness Ferromagnetism Mechanics of Materials Heat exchanger Magnetic refrigeration General Materials Science 0210 nano-technology |
| Zdroj: | UPCommons. Portal del coneixement obert de la UPC Universitat Politècnica de Catalunya (UPC) Recercat. Dipósit de la Recerca de Catalunya instname |
| DOI: | 10.1002/adma.201903577 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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