Abstract
Magnetic refrigeration is a revolutionary, efficient, environmentally friend technology, which is on the threshold of commercialization. The magnetic rare earth materials are utilized as the magnetic refrigerants in most cooling devices. Recently, some data on the magnetocaloric effect in hole-doped manganites are reviewed. It is shown that the variation of interaction exchange energy, taking place under the effect of a magnetic field in the vicinity of the phase transformation, provides a significant contribution to the change of magnetic entropy. In this paper we report different results found for electron-doped manganites La1-xCexMnO3 (x = 0.3, 0.4 and 0.5). These manganites present a large magnetic entropy change induced by low magnetic change, which is beneficial for the household application of active magnetic refrigerant materials.
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Dhahri, E., Bejar, M., Othmani, S., Tozri, A., Hlil, E.K. (2008). Magnetic Refrigeration: Application to the Electron Doped Manganites. In: Luk'yanchuk, I.A., Mezzane, D. (eds) Smart Materials for Energy, Communications and Security. NATO Science for Peace and Security Series B: Physics and Biophysics. Springer, Dordrecht. https://doi.org/10.1007/978-1-4020-8796-7_4
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DOI: https://doi.org/10.1007/978-1-4020-8796-7_4
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