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Theoretical description of magnetocaloric effect in La-Fe-Si alloys.
Author(s) : TASKAEV S. V., BUCHELNIKOV V. D., SOKOLOVSKIY V. V.
Summary
The theoretical model for description of the magnetic properties and magnetocaloric effect (MCE) of La(Fe(x)Si(1-x))(13) compounds is proposed. The model is based on the theory of the itinerant-electron metamagnetism, Ginzburg-Landau phase transition theory, statistical physics and molecular field theory. The temperature dependence of the Landau coefficients for the itinerant-electron metamagnet is derived from the spin fluctuation model with the account of the magnetovolume effect. With the help of the model the temperature and magnetic field dependences of the magnetization and entropy change are obtained. It is shown that the calculated results are in a good agreement with the experimental ones.
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Details
- Original title: Theoretical description of magnetocaloric effect in La-Fe-Si alloys.
- Record ID : 2007-1587
- Languages: English
- Source: 2nd International Conference on Magnetic Refrigeration at Room Temperature
- Publication date: 2007/04/11
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Indexing
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Themes:
Properties of cryogenic fluids and materials;
Caloric cooling (magnetocaloric, electrocaloric, elastocaloric and barocaloric cooling);
Other refrigerating systems (desiccant cooling, thermoelectrics, thermoacoustics…) - Keywords: Magnetic refrigerator; Lanthanum; Research; Alloy; Silicon; Magnetic property; Material; Iron
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Dynamic magnetocaloric and magnetic properties ...
- Author(s) : SPICHKIN Y. I., ZIMM C. B., TISHIN A. M.
- Date : 2007/04/11
- Languages : English
- Source: 2nd International Conference on Magnetic Refrigeration at Room Temperature
- Formats : PDF
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Research on the magnetocaloric effect of LaFe(1...
- Author(s) : HUANG J. H., SONG L., JIN P. Y., et al.
- Date : 2007/04/11
- Languages : English
- Source: 2nd International Conference on Magnetic Refrigeration at Room Temperature
- Formats : PDF
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On the existence of a ternary liquid miscibilit...
- Author(s) : ROCCO D. L., GAMA S., COELHO A. A., et al.
- Date : 2009/05/11
- Languages : English
- Source: 3rd International Conference on Magnetic Refrigeration at Room Temperature
- Formats : PDF
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Corrosion behaviour of LaFe(13-x)Si(x) system c...
- Author(s) : WANG J., CHEN Y., TANG Y., et al.
- Date : 2009/05/11
- Languages : English
- Source: 3rd International Conference on Magnetic Refrigeration at Room Temperature
- Formats : PDF
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Magnetocaloric effect and properties of La[Fe(1...
- Author(s) : HUANG J. H., TAKATA H., LIU C. L., et al.
- Date : 2009/05/11
- Languages : English
- Source: 3rd International Conference on Magnetic Refrigeration at Room Temperature
- Formats : PDF
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