Abstract
Powders of composition Ni3(XO4)2 with X = P and V were synthesized by both the ceramic conventional and the Pechini-type in situ polymerizable complex (IPC) method. The Pechini-type IPC technique produces these materials as single phases at reduced temperatures (750–810 °C) as opposed to the conventional solid-state reaction methods in which processing temperatures higher than 800 °C are usually required to obtain a single-phase of these materials. Reflections peaks of the samples obtained in both cases can be indexed well with the standard patterns for Ni3(PO4)2 and Ni3(VO4)2 compounds. The lattice parameters of these materials were calculated by the Rietveld refinement method from X-ray diffraction data (XRD). The average crystal size as well as the crystallinity and morphology of the powder samples were characterized by scanning electron microscopy (SEM). The results show a clearly minor particle size by using the Pechini-IPC method than the ceramic one. Moreover, the magnetic behaviour was studied on powered samples by using magnetic susceptibility data.
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The authors would like to acknowledge the financial support from the CICYT to the project MAT2006-13459-CO2-02.
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Pérez-Estébanez, M., Isasi-Marín, J. Relationship between the microstructure, structure and magnetic properties in Ni3(XO4)2 orthophosphate and orthovanadate obtained by two different preparation methods. J Sol-Gel Sci Technol 47, 326–334 (2008). https://doi.org/10.1007/s10971-008-1766-4
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DOI: https://doi.org/10.1007/s10971-008-1766-4