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- W2968578980 abstract "Abstract La0.845Sr0.155MnO3:Kx composites were synthesized and characterized by X-ray-based techniques. The results show that K+ ions substitute La3+ and Sr2+. A systematic investigation of the electrical transport properties was correlated to the Jahn-Teller, the double exchange effects, the Kondo-like spin-dependent scattering, and the intergranular spin-polarized tunneling. The electrical conduction mechanisms on the metallic region have been investigated. Moreover, the electrical resistivity of the insulating region was explained via the variable-range hopping model. At the optimized doping molar content of 0.15, the peak temperature coefficient of the resistivity measures 8.30% K−1 at 288.01 K. This is the best value reported for K-doped perovskite manganites until now. These findings suggest that LSMO:K0.15 composites can be used to prepare uncooled infrared bolometers." @default.
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- W2968578980 date "2019-11-01" @default.
- W2968578980 modified "2023-09-29" @default.
- W2968578980 title "Electrical transport properties of La0.845Sr0.155MnO3:K (0 ≤ x ≤ 0.2) composites" @default.
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