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Title: Composition dependence of magnetocaloric effect in Sm1-xSr xMnO3 (x=0.3-0.5)
Authors: Rebello, A.
Mahendiran, R. 
Issue Date: 2008
Citation: Rebello, A., Mahendiran, R. (2008). Composition dependence of magnetocaloric effect in Sm1-xSr xMnO3 (x=0.3-0.5). Applied Physics Letters 93 (23) : -. ScholarBank@NUS Repository.
Abstract: We investigated magnetic and magnetocaloric properties in Sm1-x Srx MnO3 (x=0.3-0.5). We report a magnetic field-driven first-order metamagnetic transition in the paramagnetic state in x=0.4 and 0.5 and a second-order transition in x=0.3. The highest magnetic entropy (-Δ Sm =1.41 J/mol K for ΔH=5 T at T=125 K) that occurs in x=0.4 is associated with the metamagnetic transition resulting from the field-induced growth and coalescence of ferromagnetic nanoclusters pre-existing in the paramagnetic state. Our results suggest that manganites with intrinsic nanoscale phase separation can be exploited for magnetic refrigeration. © 2008 American Institute of Physics.
Source Title: Applied Physics Letters
ISSN: 00036951
DOI: 10.1063/1.3040698
Appears in Collections:Staff Publications

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