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https://scholarbank.nus.edu.sg/handle/10635/115450
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dc.title | Magnetic and calorimetric studies of magnetocaloric effect in La 0.7-xPr xCa 0.3MnO 3 | |
dc.contributor.author | Barik, S.K. | |
dc.contributor.author | Aparnadevi, M. | |
dc.contributor.author | Rebello, A. | |
dc.contributor.author | Naik, V.B. | |
dc.contributor.author | Mahendiran, R. | |
dc.date.accessioned | 2014-12-12T07:15:46Z | |
dc.date.available | 2014-12-12T07:15:46Z | |
dc.date.issued | 2012-04-01 | |
dc.identifier.citation | Barik, S.K., Aparnadevi, M., Rebello, A., Naik, V.B., Mahendiran, R. (2012-04-01). Magnetic and calorimetric studies of magnetocaloric effect in La 0.7-xPr xCa 0.3MnO 3. Journal of Applied Physics 111 (7) : -. ScholarBank@NUS Repository. | |
dc.identifier.issn | 00218979 | |
dc.identifier.uri | http://scholarbank.nus.edu.sg/handle/10635/115450 | |
dc.description.abstract | We report magnetocaloric effect in La 0.7-xPr xCa 0.3MnO 3 (x = 0, 0.2, 0.3, and 0.4). All these compounds undergo first-order paramagnetic to ferromagnetic transition upon cooling and show field-induced metamagnetic transition (FIMMT) in the paramagnetic state. The FIMMT is accompanied by a release of latent heat and change in temperature of the sample as evidenced from differential scanning calorimetry and thermal analysis data for x = 0.3. The magnetic entropy decreases (-δS m 8.23, 8.1, 7, and 5.38 Jkg -1 K -1 for a field change of δH 5 T, for x = 0, 0.2, 0.3, and 0.4, respectively) and refrigeration capacity (RC) increases with increasing x (RC 197, 215, 240, and 259 J/kg for x = 0, 0.2, 0.3, and 0.4, respectively). We suggest that collapse of magnetic polarons in the paramagnetic state and magnetovolume effect are responsible for the observed FIMMT and large -δS m values. © 2012 American Institute of Physics. | |
dc.description.uri | http://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1063/1.3679441 | |
dc.source | Scopus | |
dc.type | Conference Paper | |
dc.contributor.department | PHYSICS | |
dc.description.sourcetitle | Journal of Applied Physics | |
dc.description.volume | 111 | |
dc.description.issue | 7 | |
dc.description.page | - | |
dc.description.coden | JAPIA | |
dc.identifier.isiut | 000303282401189 | |
Appears in Collections: | Staff Publications |
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