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Electrochemical oxidation of La2CuO4. Phase equilibria among superconductors

AuthorsOndoño-Castillo, S.; Gómez-Romero, P. ; Fuertes, Amparo ; Casañ Pastor, Nieves
KeywordsCooper oxides
Oxygen doping
Electrochemical oxidation
Issue Date1994
PublisherTrans Tech Publications
CitationMaterials Science Forum 152-153: 193-196 (1994)
AbstractElectrochemical oxidation of La2CuO4 in aqueous OHMIN yield superconducting materials with Tc values that depend on the degree of oxidation and the temperature. The chemical nature of the charge carriers changes with temperature, yielding notable changes in Tc values. For the maximum oxidation of 0.15 holes per copper, an internal redistribution of holes between Cu and O is proposed from RT to 100 °C. Partial derivatives of magnetic susceptibility vs susceptibility show the existence of several coexisting phases with distinct Tc's, possibly within each grain.
Identifiersdoi: 10.4028/www.scientific.net/MSF.152-153.193
issn: 0255-5476
Appears in Collections:(ICMAB) Artículos
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