Abstract
Free-flowing Ln2Zr2O7 microspheres (Ln=lanthanide) were prepared by an aqueous inorganic sol-gel route without any intermediate phase formation. The gel spheres obtained at room temperature were shown by X-ray diffraction to be amorphous but calcination to 750 °C produced fully crystalline fluorite phases. On calcination to 850 °C, pyrochlore phases were formed with suitable lanthanides. The microspheres were characterized by X-ray diffraction and scanning electron microscopy with energy dispersive analysis of X-rays to give accurate determination of structure, composition and crystallite size.
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Bhattacharya, A.K., Hartridge, A., Mallick, K.K. et al. Preparation and characterization of Ln2Zr2O7 microspheres by an inorganic sol-gel route. JOURNAL OF MATERIALS SCIENCE 29, 6076–6078 (1994). https://doi.org/10.1007/BF00354544
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DOI: https://doi.org/10.1007/BF00354544