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Polycrystalline La 0.65−x Eu x Sr 0.35 MnO 3 (x=0.05, 0.10, 0.15, 0.20, 0.30) samples are prepared by sol–gel method, and all of them have a single hexagonal perovskite structure, revealed by X-ray diffraction. The working temperature of the potential cooling material can be changed easily by La-site doping, which is beneficial for the future application in various...
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