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- W2350542931 abstract "The effect of Ni substitution for Mn on magnetic and transport properties has been investigated for layered manganese oxides LaSr2Mn2-xNixO7. Nickel doping hampered the canted antiferromagnetic (AFM) exchange at low temperature and their Neel temperature (TN) decreased from 138 K (x=0) to 102 K (x=0.3). Meanwhile, spin glass, charge ordering and metal-insulator transition are suppressed by Ni addition. The resistivity increases obviously with increasing x due to double exchange interaction channel broken by Ni2+ addition. The resistivity of all samples in low temperature range fits to the Mott′s variable rang hopping (VRH) model, while it fits to nearest neighbor hopping of small polarons model in high temperature range." @default.
- W2350542931 created "2016-06-24" @default.
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- W2350542931 date "2006-01-01" @default.
- W2350542931 modified "2023-09-25" @default.
- W2350542931 title "Effect of Ni Doping on Magnetic and Electrical Properties in LaSr_2Mn_(2-x)Ni_xO_7" @default.
- W2350542931 hasPublicationYear "2006" @default.
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