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A study on the growth behavior of nano NiO crystals synthesized by a solid state reaction  

Kim, Chang-Sam (Korea Institute of Science and Technology)
Cheong, Deock-Soo (Material Science and Engineering, Dankook University)
Kang, Seung-Min (Department of Advanced Materials Science and Engineering, Hanseo University)
Publication Information
Journal of the Korean Crystal Growth and Crystal Technology / v.19, no.4, 2009 , pp. 184-189 More about this Journal
Abstract
We characterized the growth behavior of nano NiO crystals synthesized by heat-treatment in air at the elevated temperatures using nickel nitrate ($Ni(NO_3)_2{\cdot}6H_2O$). The crystals had the octahedral shape and the length of 200${\sim}$500 nm. The truncation was observed when the NiO powder was heated up to $900^{\circ}C$ for 2 hours. but not be seen at under $600^{\circ}C$. It was observed that nano NiO crystals synthesized at $900^{\circ}C$ made up the networks, the coalescence of the nano crystals through the neck formation between the crystals appeared as the first stage in the sintering mechanism.
Keywords
NiO; Nano crystals; Solid state reaction; Truncation; Growth behavior;
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