کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1616479 | 1516380 | 2012 | 5 صفحه PDF | دانلود رایگان |
Experimental results and the analysis of a resistivity of La1−x(K, Ag)xMnO3 manganites are presented. The behavior of the resistivity ρ(T) in a wide temperature range and a phase transition region are described. For the description of ρ(T) near a phase transition temperature are used the representations of the percolation theory. A percolation threshold dependence on doping degree in La1−x(K, Ag)xMnO3 manganites is studied. In La1−xKxMnO3 system for samples with x ≤ 0.12, an infinite conductivity channel forms at temperatures below the Curie temperature, and with x > 0.12 of potassium concentrations it is appeared at T > TC.
► The behavior of the resistivity ρ(T) in a wide temperature range and a phase transition region are described.
► A percolation threshold dependence on doping degree in La1−x(K, Ag)xMnO3 manganites is studied.
► In La1−xKxMnO3 system for samples with x ≤ 0.12, an infinite conductivity channel forms at temperatures below the Curie temperature, and with x > 0.12 of potassium concentrations it is appeared at T > TC.
Journal: Journal of Alloys and Compounds - Volume 513, 5 February 2012, Pages 334–338