Abstract
Two kinds of methods were carried out in order to dope the oxygen in La 2CuO 4 structure; one is the annealing under high oxygen pressure at high temperature and the other, electrochemical oxidation in an aqueous alkaline solution at ambient temperature. The difference in orthorhombicity was seen in La 2CuO 4+z with the same z value but prepared by different routes, indicating the difference in excess oxygen distribution. The electrochemical oxidation is also effective to bring the superconductivity in La 2−x Bi x CuO 4+z and La 2−x Pb x CuO 4+z system. Some samples show the Tc onset of 28K for La 1.93Bi 0.07CuO 4 and 15–20K for Pb doped one.
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.
