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- W1964447388 abstract "This paper studies the effects of the Mn-site substitution by nickel on the magnetic properties and the magnetocaloric properties of <TEX>$La_{0.7}Ca_{0.3}Mn_{1-x}Ni_xO_3$</TEX> (x = 0, 0.05 and 0.1). The orthorhombic crystal structures of the samples are confirmed by the room temperature X-ray diffraction. The dependence of the Curie temperature (<TEX>$T_C$</TEX>) and the magnetic entropy change (<TEX>${Delta}S_M$</TEX>) on the Ni doping content was investigated. The samples with x = 0 had the first order phase transition, while the samples with x = 0.05 and 0.1 had the second order phase transition. As the concentration of Ni increased, the maximum entropy change (<TEX>${mid}{Delta}S_M{mid}_{max}$</TEX>) decreased gradually, from 2.78 <TEX>$J{cdot}kg^{-1}{cdot}K^{-1}$</TEX> (x = 0) to 1.02 <TEX>$J{cdot}kg^{-1}{cdot}K^{-1}$</TEX> (x = 0.1), in a magnetic field change of 15 kOe. The measured value of <TEX>$T_C$</TEX> was 185 K, 150 K and 145 K for x = 0, 0.05 and 0.1, respectively. The phase transition temperatures became wider as x increased. It indicates that the Mn-site substitution by Ni may be used to tailor the Curie temperature in <TEX>$La_{0.7}Ca_{0.3}Mn_{1-x}Ni_xO_3$</TEX>." @default.
- W1964447388 created "2016-06-24" @default.
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- W1964447388 date "2013-03-31" @default.
- W1964447388 modified "2023-10-16" @default.
- W1964447388 title "The Magnetic and Magnetocaloric Properties of the Perovskite La0.7Ca0.3Mn1-xNixO3" @default.
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- W1964447388 doi "https://doi.org/10.4283/jmag.2013.18.1.034" @default.
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