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- W2883135119 abstract "We investigated the effect of both lanthanum and strontium deficiencies upon the structural, magnetic and magnetocaloric properties in La0.7Sr0.3MnO3 mixed-valence manganite. Lacunar powder oxides La0.7−x□x Sr0.3MnO3 and La0.7Sr0.3−x□xMnO3 (x = 0, 0.01, 0.02 and 0.05), where □ is a vacancy, were prepared by the sol–gel technique by sintering at 750 °C and 850 °C. Our synthetized samples crystallize in a rhomboedrically distorted perovskite structure with space group R-3C. Both these series of samples are ferromagnets and undergo second order paramagnetic–ferromagnetic transition with decreasing temperature. Magnetization measurements versus magnetic applied field at low temperature confirm the ferromagnetic behavior of our lacunars samples. Curie temperature decrease with increasing vacancy content for strontitum-deficient samples, while, its shows a maximum at about x = 0.01 (TC = 358 K) followed by a minimum for x = 0.03 (TC = 336 K) for lanthanum- deficient compounds. All compounds undergo a large magnetocaloric effect and have consequently potential applications in magnetic refrigeration domain around room temperature." @default.
- W2883135119 created "2018-08-03" @default.
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- W2883135119 date "2018-09-01" @default.
- W2883135119 modified "2023-10-05" @default.
- W2883135119 title "Effect of A-site deficiency on investigation of structural, magnetic and magnetocaloric behaviors for (LaSr)-lacunar manganites" @default.
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- W2883135119 doi "https://doi.org/10.1016/j.cplett.2018.07.039" @default.
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