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|Type:||Artigo de periódico|
|Title:||Electrochemical Intercalation Of O2- In La2cuo4 Single Crystals|
|Abstract:||The electrochemical intercalation of oxygen in La2CuO4 single crystals was studied using electron paramagnetic resonance and magnetic susceptibility measurements. Chronoamperometric experiments showed that, in the intercalation process, the O2- diffusion in single crystals is extremely slow (D ≈ 1016cm2s-1). This diffusion coefficient depends strongly on temperature and the enthalpy diffusion was found to be ca. 750 kJ deg-1 mol-1. Crystals under electro-oxidation for one to two weeks still show the presence of the antiferromagnetic and a superconducting phases. This was supported by the simultaneous observation of line splitting in the EPR spectra and superconducting diamagnetic signal. © 1995.|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
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