Anomalous Magnetic and Thermal Behavior in Some RMn2O5 Oxides
C. L. Huang, C. C. Chou, C. J. Ho, C. P. Sun, B. K. Chaudhuri, H. D. Yang
Abstract
The RMn2O5 (R=Pr, Nd, Sm, and Eu) oxides showing magnetoelectric (ME) behavior have been prepared in polycrystalline form by a standard citrate route. The lattice parameters, obtained from the powder XRD analysis, follow the rare-earth contraction indicating the trivalent character of the R ions. Cusp-like anomalies in the magnetic susceptibility curve and sharp peaks in the specific heat were reported at the corresponding temperatures in RMn2O5 (R=Pr, Nd, Sm, and Eu) indicating the magnetic or electric ordering transitions.
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