The La2/3Ca1/3Mn1-xCuxO3 (0≤x<6%) samples were prepared by sol-gel method. Transport properties, conductive mechanism and low-field magnetoresistance (MR0) were
Using PTFE as a chemical modifier, a method for the determination of trace impurities in high purity Nd2O3 by in-situ separation and electrothermal vaporization