Charge ordering Magnetic oxides Magnetization Magnetocaloric effect Perovskite structure
Issue Date:
2004
Publisher:
Journal of Magnetism and Magnetic Materials
Citation:
Volume 272-276, Page 1292-1294
Abstract:
The Nd0.5Sr0.5Mn1-xCuxO 3 (x=0.00; 0.02; 0.10) and Nd0.25Pr0.25Sr 0.5MnO3 perovskites
have been prepared by solid reaction technology. The manganites are of single phase with orthorhombic
structure. The FC and ZFC measurements show an evident existence of charge-ordering effect at low
temperatures. At the charge-ordering temperature the magnetic entropy change, ??S, is positive and the |??S
max| is larger than that determined at ferromagnetic-paramagnetic phase transition temperature. ?? 2003
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