Epitaxial NiO nanocrystals: A dimensional analysis

Jeffrey Cheung, Mahmut Baris Okatan, Jivika Sullaphen, Xuan Cheng, Valanoor Nagarajan, Yong Lun Chen, Ying-Hao Chu

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3 Citations (Scopus)


We present the study of the synthesis of (001) nickel oxide (NiO) epitaxial nanocrystals grown on (001) strontium titanate (SrTiO3) single crystal substrates. Pulsed laser deposition of the bismuth nickel oxide (BiNiO3, BNO) perovskite precursor followed by post-deposition processing is carried out to form the NiO nanocrystals. A detailed analysis of the dimensions of nanocrystals reveals that the morphology attained differs from the thermodynamically expected equilibrium shape. The deviations from the equilibrium shape are found to follow a systematic trend where the in-plane basal dimensions, that is, the length and width of the nanocrystals grown differ in discretized dimensions. This discretization suggests that for a given interfacial area of nanocrystals there are multiple stable basal rectangular geometries attainable.

Original languageEnglish
Pages (from-to)107-111
Number of pages5
JournalMRS Communications
Issue number2
Publication statusPublished - Jun 2013
Externally publishedYes

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