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Type: Artigo de periódico
Title: Electrochemical Intercalation Of O2- In La2cuo4 Single Crystals
Author: Sanchez R.D.
Torresi R.M.
Rettori C.
Oseroff S.
Fisk Z.
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.
Rights: fechado
Identifier DOI: 10.1016/0013-4686(94)00283-7
Date Issue: 1995
Appears in Collections:Unicamp - Artigos e Outros Documentos

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