Preparation and characterization of copper-doped cobalt oxide electrodes

Article Abstract:

Cobalt oxide ([Co.sub.3][O.sub.4]) and copper-doped cobalt oxide ([Cu.sub.x][Co.sub.3-x][O.sub.4]) films are prepared onto titanium support by the thermal decomposition method and are characterized by different techniques. The analysis of surface cation distribution has indicated that the Cu(II) ions have preference for octahedral sites, although the relative amount of Cu(II) at tetrahedral position rises as the amount of copper increases in the oxide layer.

Thermal properties, Copper compounds

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Magnetic and Mossbauer investigation of the photomagnetic Prussian blue analogue Na(sub 0.32)Co[Fe(CN)(sub 6)](sub 0.74).3.4H(sub 2)O: Cooperative relaxation of the thermally quenched state

Article Abstract:

The relaxation of the metastable state of Na(sub 0.32)Co[Fe(CN)(sub 6)](sub 0.74).3.4H(sub 2)O at low temperature was investigated with the help of thermal quenching. A sizeable deviation from mean-field behavior was observed at the beginning of the relaxation process, which might be attributed too a preliminary structural relaxation of the quenched state.

Science & research, All Other Basic Inorganic Chemical Manufacturing, Industrial inorganic chemicals, not elsewhere classified, Potassium & Sodium Compounds, Sodium & Sodium Compounds, Cobalt Compounds, Research, Magnetic fields, Sodium compounds

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Nature of the long-range structural changes induced by the molecular photoexcitation and by the relaxation in the Prussian blue analogue Rb(sub 1.8)Co(sub 4)[Fe(CN)(sub 6)](sub 3.3).13H2O. A synchrotron x-ray diffraction study

Article Abstract:

The local bon-lengthening around the cobalt that induces long-range structural changes are studied by x-ray powder diffraction using synchrotron radiation. The result indicates that a photoinduced molecular bond-lengthening is made possible in a face-centered cubic Prussian blue analogue by the presence of [Fe(CN)(Sub 6)] vacancies.

Usage, X-ray diffraction, Iron compounds, Rubidium

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