Journal Article

PreJuSER-9281

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Anomalous magnetic field dependence of magnetocaloric effect at low temperature in Pr_0.52Sr_0.48MnO_3 single crystal

Patra, M. ; Majumdar, S. ; Giri, S. ; Iles, G. N. ; Chatterji, T.FZJ*

2010
American Institute of Physics Melville, NY

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Please use a persistent id in citations: http://hdl.handle.net/2128/17225  doi:10.1063/1.3340524

Abstract: We report the magnetocaloric effect (MCE) in a Pr0.52Sr0.48MnO3 single crystal. A peak in the temperature dependence of magnetic entropy change (Delta S-M) with a fairly large negative value (approximate to 3.8 J/ kg K) is observed at 275 K close to Curie temperature. MCE is spread over a wide temperature range resulting in a considerable refrigerant capacity (approximate to 293 J/kg). At low temperature the sign of Delta S-M changes, below which anomalous field dependence of Delta S-M is observed indicating the coexistence of ferromagnetic and antiferromagnetic interactions. Interplay between the interactions is strongly influenced by direction and magnitude of applied magnetic field in the ordered state. (C) 2010 American Institute of Physics. [doi:10.1063/1.3340524]

Keyword(s): J

Note: G. wishes to thank DST, India for the financial support (Project No. SR/S2/CMP-46/2003). M. P. acknowledges CSIR, India for SRF fellowship.

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Contributing Institute(s):

1. Neutronenstreuung (IFF-5)
2. Streumethoden (IFF-4)
3. JCNS (Jülich Centre for Neutron Science JCNS (JCNS) ; JCNS)

Research Program(s):

1. BioSoft: Makromolekulare Systeme und biologische Informationsverarbeitung (P45)
2. Großgeräte für die Forschung mit Photonen, Neutronen und Ionen (PNI) (P55)

Appears in the scientific report 2010

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