X-ray diffraction and electron microscopy studies on the morphology of the Cu0.96CO2.04O4 spinel prepared by thermal decomposition of copper (II)-cobalt (II) hydroxonitrates

K. Petrov, V. Petkov, P. Rachev

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Abstract

Polycrystalline samples of Cux. Co2-x(OH)3NO3 with a Cu/Co atomic ratio equal to 0.47 have been thermally decomposed in air at temperatures in the range 180-450 C. The morphology of the final cuo.96Co2.04O4 spinel products has been studied by means of X-ray diffraction line profile analyses and electron microscopy observations. It has been found that in the temperature interval 180-325°C the size and form of the spinel crystallites do not depend on the temperature or on the reaction rate. It has been assumed that the oxide formation is associated with a diffusionless transformation similar to that established with a number of hydroxonitrate and hydroxide precursors having layered crystal structures.

Original languageEnglish
Pages (from-to)577-585
Number of pages9
JournalMaterials Chemistry and Physics
Volume13
Issue number6
DOIs
StatePublished - Dec 1985

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