中国电子科技2008，Vol.6Issue(2)：166-170,5.
Effects of Doping Mn on Nd1.85Ce0.15CuO4 System
Effects of Doping Mn on Nd1.85Ce0.15CuO4 System
摘要
Abstract
Nd1.85Ce0.15Cu1-xMnxO4 samples with doping level up to 20% have been synthesized by solid-state reaction method. The influence of Mn on their normal-state transport, crystal structure, superconductivity and magnetic properties has been investigated. For the samples with x>0.03, magnetization under zero-field cooling indicates that the magnetic state changes from ferromagnetic to paramagnetic at T≈100 K, which can be explained with the interaction between Mn4+and Mn3+. The electrical resistivity ρ of samples increases with Mn doping. For the samples with doping level lower than 0.20, ρ initially increases with the decrease of temperature, i.e., dρ/dt<0, and then shows superconductivity transition at T≈20 K. The results suggest the coexistence of superconductivity and ferromagnetic ordering in Mn doped Nd1.85Ce0.15CuO4.关键词
Crystal structure transition/magnetic properties/Mn dopingKey words
Crystal structure transition/magnetic properties/Mn doping分类
信息技术与安全科学引用本文复制引用
Fa-She Wang,Yong-Liang Chen,Ye Yang,Yong Zhang,Cui-Hua Cheng,Yong Zhao..Effects of Doping Mn on Nd1.85Ce0.15CuO4 System[J].中国电子科技,2008,6(2):166-170,5.基金项目
This work was supported by the National Science Foundation of China under Grant No. 50372052, 50588201, the National Basic Research Program of China (973 program) under Grant No. 2007CB616906, the Program for Changjiang Scholars and Innovative Research Team in University, and Australian Research Council under Grant No. DP0559872, DP0881739. （973 program）
