Abstract

Evidence of precipitation in MgO:Co crystals after reducing heat treatments at temperatures near or above 1375 K is given. Thermochemically reduced crystals have been examined by transmission electron microscopy (TEM) and cathodoluminescence scanning electron microscopy (CL-SEM). TEM observations show the spatial and size distribution of particles to be very inhomogeneous and associated with complex structures of dislocations. These structures are developed during the thermochemical reduction of the crystals. The CL results are analyzed on the basis of anion vacancy complexes.

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