Microstructural control and tuning of thermal conductivity in La0.67Ca0.33MnO3+/-\delta
| Autor: | J.A. Turcaud, N.McN. Alford, Karl G. Sandeman, Kelly Morrison, L. F. Cohen, Andrey Berenov |
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| Jazyk: | angličtina |
| Rok vydání: | 2012 |
| Předmět: |
Condensed Matter - Materials Science
Materials science Condensed matter physics Mechanical Engineering Metals and Alloys Condensed Matter Physics Grain size Refrigerant Condensed Matter - Strongly Correlated Electrons Thermal conductivity Mechanics of Materials Magnetic refrigeration General Materials Science Composite material Silver impregnation |
| Popis: | Manganites are one of only a small number of material families currently being trialled as room temperature magnetic refrigerants. Here we examine the dependence of the thermal conductivity, K, of La0.67Ca0.33MnO3+/-{\delta} as a function of density, grain size and silver impregnation around room temperature. We use a simple effective medium model to extract relevant trends in the data and demonstrate a threefold increase in thermal conductivity by silver impregnation. Comment: 4 pages, 4 figures |
| Databáze: | OpenAIRE |
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