期刊
NATURE MATERIALS
卷 12, 期 1, 页码 52-58出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/NMAT3463
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资金
- UK EPSRC [EP/E03389X, EP/E0026206]
- Herchel Smith Fund
- Comissionat per a Universitats i Recerca (CUR) del Departament d'Innovacio, Universitats i Empresa de la Generalitat de Catalunya
- Basque Government under the Etortek Program [IE11-304]
- Spanish Consolider-Ingenio Program [CSD2006-53]
- Ukrainian State Fund for Fundamental Researches [F41.1/020]
- The Royal Society
- EPSRC [EP/G031509/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/G031509/1] Funding Source: researchfish
Large thermal changes driven by a magnetic field have been proposed for environmentally friendly energy-efficient refrigeration, but only a few materials that suffer hysteresis show these giant magnetocaloric effects. Here we create giant and reversible extrinsic magnetocaloric effects in epitaxial films of the ferromagnetic manganite La0.7Ca0.3MnO3 using strain-mediated feedback from BaTiO3 substrates near a first-order structural phase transition. Our findings should inspire the discovery of giant magnetocaloric effects in a wide range of magnetic materials, and the parallel development of nanostructured bulk samples for practical applications.
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