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Insight into microstructural development by the XBroad program: case of Al-Zn solid solution and multiferroic Ba2CoTeO6

Formation of the Al-15at% Zn solid solution was followed by in-situ PXRD measurements. It was found that the temperature of 200 °C marks an onset of the dissolution of Zn atoms in Al matrix, while the solid solution was formed at 300°C.. Change in the shape of the Zn precipitates during the solid solution formation was analyzed by XBroad program [1]. The program provides adequate information about changes in sizes and/or transformations in shapes during different crystallization/dissolution processes without any prior information on structural features of system under study. It was demonstrated that XBroad program is an excellent tool for quick and effective microstructural analysis easily used by material science community regardless of their background in the field of crystallography. Changes of crystallite dimensions (along the a- and c- axis) in the whole temperature range, from RT to 280 °C, are shown on Figure. It is fair to assume that Zn atoms which dissolve in the Al matrix are dominantly those that come from the {; ; ; ; 001}; ; ; ; lattice planes of Zn precipitates, so as the solid solution formation process propagates, Zn precipitates become flatter and flatter (along c-axis) until they finally diminish completely and solid solution is formed. Second work case which will be presented is microstructural characterization of Ba2CoTeO6- newly prepared compound with application as muliferroic material.

XRD line broadening; AlZn alloys

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