Self-organized ZnAl2O4 nanostructures grown on -sapphire |
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| Authors: | Justina Grabowska, Karuna Kar Nanda, R.T. Rajendra Kumar, J.P. Mosnier, M.O. Henry, Simon B. Newcomb, Patrick McNally, Lisa O&#x Reilly, Xu Lu,Enda McGlynn |
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| Affiliation: | aSchool of Physical Sciences, NCPST, Dublin City University, Glasnevin, Dublin 9, Ireland;bGlebe Scientific Ltd., Newport, Co. Tipperary, Ireland;cSchool of Electronic Engineering/RINCE, Dublin City University, Glasnevin, Dublin 9, Ireland |
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| Abstract: | Self-organized ZnAl2O4 nanostructures with the appearance (in SEM) of high aspect ratio horizontal nanowires are grown on uncatalysed c-sapphire by vapour phase transport. The nanostructures grow as three equivalent crystallographic variants on c-sapphire. Raman and cathodoluminescence spectroscopy confirm that the nanostructures are not ZnO and TEM shows that they are the cubic spinel, zinc aluminate, ZnAl2O4, formed by the reaction of Zn and O with the sapphire substrate. |
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| Keywords: | Zinc aluminate Spinel Epitaxy Sapphire Growth SEM TEM Raman Cathodoluminescence |
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