Abstract
Compounds with the general formula La0.8Sr0.2Cu1-xMnxO3 were prepared by the citrate route. A solid solution region containing hexagonal perovskite phase, was formed when 0.6{less than or equal to}x{less than or equal to}1, in which oxygen stoichiometry in air changes from oxygen deficiency to oxygen excess with Mn doping. The temperature dependence of electrical conductivity changes from metallic- like behavior in La0.8Sr0.2CuO3-d to semiconducting type in La0.8Sr0.2MnO3+d. Mn doping resulted in a decrease in the conductivity (with the minimum at 40% Mn doping), whereas the thermal expansion coefficient decreased linearly with x. A defect model for the mixed Cu-Mn perovskite is proposed and related to its physical and electrochemical properties.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
