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- W2163240848 abstract "Abstract The effect of MgO doping on the structural, magnetic, and magnetotransport properties of La 0.8 Sr 0.2 MnO 3 (LSMO)/ x MgO has been investigated. All samples were prepared by a solid-state reaction method. Alternating current susceptibility measurements for LSMO/ x MgO samples show that the Curie transition temperature ( T c ) and magnetization decrease with the increase of MgO concentration. The rate of the decrease of T c at higher doping level is very fast. Also, samples with low doping level ( x ≤ 2) show insulator-metal transition, but the transition temperature decreases and resistivity increases with the amount of MgO. It is observed that there is no insulator-metal transition at higher MgO doping level ( x ≥ 3). Also, the results show that the value of low-field magnetoresistance decreases with the increase of MgO doping level. It seems that due to the higher sintering temperature and almost the same ionic radii of Mg 2+ and Mn 3+ , Mg 2+ mostly replaced Mn 3+ and weakened the double-exchange interaction, and consequently, T c and magnetoresistance decrease and resistivity increases with MgO doping." @default.
- W2163240848 created "2016-06-24" @default.
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- W2163240848 date "2013-01-08" @default.
- W2163240848 modified "2023-09-25" @default.
- W2163240848 title "The effect of MgO doping on the structural, magnetic, and magnetotransport properties of La0.8Sr0.2MnO3 manganite" @default.
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- W2163240848 doi "https://doi.org/10.1186/2251-7235-7-1" @default.
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