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Tai Nguyen So - Vietnam National University, Ha Noi - VNU >
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| Title: | Large magnetic-entropy change above 300 K in CMR materials |
| Authors: | Phan M.H.
Tian S.B.
Hoang D.Q.
Yu S.C.
Nguyen C.
Ulyanov A.N. |
| Keywords: | Double exchange
Entropy
Magnetic refrigeration
Magnetocaloric effect
Perovskite |
| Issue Date: | 2003 |
| Publisher: | Journal of Magnetism and Magnetic Materials |
| Citation: | Volume 258-259, Issue , Page 309-311 |
| Abstract: | A large magnetic-entropy change ΔSM associated with the ferromagnetic-paramagnetic transition in CMR materials (La0.65Sr0.35MnO3, La0.6Sr0.2Ca0.2MnO3, La0.6Sr0.2Ba0.2MnO3 and La0.7Ca0.06Ba0.24MnO3) has been observed. It is shown that the ΔSM reaches a maximum value of 2.26J/kg/K for La0.6Sr0.2Ba0.2MnO3 composition at Curie temperature of 354 K, upon 10 kOe applied field variation. Due to the large ΔSM and high Curie temperature, these CMR materials are suggested to use as active magnetic refrigerants for magnetic refrigeration technology above room temperature. © 2002 Elsevier Science B.V. All rights reserved. |
| URI: | http://tainguyenso.vnu.edu.vn/jspui/handle/123456789/11882 |
| ISSN: | 3048853 |
| Appears in Collections: | Articles of Universities of Vietnam from Scopus
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