Synthesis and Characterization of Zn₃Nb₂O₈ Nanopowders Via a Rapid Vibro-Milling Technique

Abstract

The simple mixed-oxide method via a rapid vibro-milling technique is explored in the preparation of pure zinc niobate (Zn₃Nb₂O₈) nanopowders. The formation of the phase in the calcined powders has been investigated as a function of calcination conditions by TG-DTA and XRD techniques. Morphology, particle size and chemical composition have been determined via a combination of SEM/TEM and EDX techniques. It has been found that the minor phase of ZnNb₂O₆ tends to form together with the Zn₃Nb₂O₈ phase, depending on calcination conditions. More importantly, it is seen that optimization of calcination conditions can lead to a single-phase Zn₃Nb₂O₈ in a monoclinic phase.

Keywords:

• Zinc niobates
• nanopowders
• calcination
• phase formation

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Corrigendum

Acknowledgments

Financial supports from the Industry/University Cooperative Research Center (I/UCRC) in HDD Component, the Faculty of Engineering, Khon Kaen University and National Electronics and Computer Technology Center, National Science and Technology Development Agency, Synchrotron Light Research Institute (Public Organization) and Graduate School of Chiang Mai University are gratefully acknowledged.

Communicated by Professor Amar S. Bhalla