Abstract
The electrochemical intercalation of La 2CuO 4 at ambient temperature has been investigated. Galvanostatic and potential step experiments show that the oxygen atoms intercalated on oxidation are completely removed on reduction. The voltage composition profiles observed on oxidation and reduction, however, are very different and equilibrium is not attained. In particular the results obtained on reduction show clear evidence for a nucleation controlled phase separation. Samples prepared electrochemically show superconducting transitions with onset temperatures of ∼30 K and ∼42K depending on the oxygen content, in agreement with previous results. The electrochemical and T c data are discussed in relation to the proposed ambient temperature phase diagram of La 2CuO 4+x.
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.
