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With Nd3+ ionic doping, series of perovskite manganites La0.7−xNdxBa0.3MnO3 (x=0, 0.05, 0.1) were prepared by the sol-gel technique. The magnetocaloric correlative measurement of La0.65Nd0.05Ba0.3MnO3 was representatively carried out. Double metal–insulator peaks being found on the resistivity–temperature curves of samples, the maximum of magnetic entropy change was found to be ΔSH=−1.3 J/kg K...
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