Please use this identifier to cite or link to this item:
|Title:||Magnetic and calorimetric studies of magnetocaloric effect in La 0.7-xPr xCa 0.3MnO 3|
|Authors:||Barik, S.K. |
|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. https://doi.org/10.1063/1.3679441|
|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.|
|Source Title:||Journal of Applied Physics|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Aug 13, 2018
WEB OF SCIENCETM
checked on Jul 3, 2018
checked on Jul 13, 2018
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.