Journal of Materials Science

, Volume 29, Issue 23, pp 6076–6078 | Cite as

Preparation and characterization of Ln2Zr2O7 microspheres by an inorganic sol-gel route

  • A. K. Bhattacharya
  • A. Hartridge
  • K. K. Mallick
  • J. L. Woodhead


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.


Polymer Microscopy Electron Microscopy Scanning Electron Microscopy Calcination 
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Copyright information

© Chapman & Hall 1994

Authors and Affiliations

  • A. K. Bhattacharya
    • 1
  • A. Hartridge
    • 1
  • K. K. Mallick
    • 1
  • J. L. Woodhead
    • 1
  1. 1.Centre for Catalytic Systems and Materials Engineering, Department of EngineeringUniversity of WarwickCoventryUK

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