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Título: | Influence of crystal structure on the Co(II) diffusion behavior in the Zn(1−x)CoxO system |
Autor: | Peiteado, Marco CSIC ORCID ; Makovec, D.; Villegas, Marina; Caballero Cuesta, Amador CSIC ORCID | Palabras clave: | ZnO Diffusion couples Spinel Solid state chemistry Magnetic semiconductors |
Fecha de publicación: | 12-jun-2008 | Editor: | Elsevier | Citación: | Journal of Solid State Chemistry 181(9): 2456-2461 (2008) | Resumen: | The solid state interaction of the Zn(1−x)CoxO nominal system is investigated by means of diffusion couples and analysis of co-precipitated samples. The formation of a homogeneous Co:ZnO solid solution is found to be determined by the crystal structure from which Co(II) ions diffuse into the wurtzite lattice. No diffusion is observed whenever the CoO rock-salt structure is formed from the Co(II) precursor. On the contrary, the diffusion from the Co3O4 spinel phase is feasible but has a limited temperature range defined by the reduction at a high temperature of Co(III)–Co(II), since this process again leads to the formation of the rock-salt structure. However, when using a highly reactive and homogeneous co-precipitated starting powder, neither the spinel phase nor the rock-salt structure is formed, and a Co(II):ZnO solid solution is obtained, which remains stable up to high temperatures. | Descripción: | 6 pages, 8 figures.-- Printed version published Sep 2008. | Versión del editor: | http://dx.doi.org/10.1016/j.jssc.2008.06.010 | URI: | http://hdl.handle.net/10261/13501 | DOI: | 10.1016/j.jssc.2008.06.010 | ISSN: | 0022-4596 |
Aparece en las colecciones: | (ICV) Artículos |
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