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Title: Positron annihilation in off-stoichiometric and ta-doped Zn2TiO4
Authors: Guagliardo, PR
Vance, ER
Lumpkin, GR
Blackford, MG
Sudarshan, K
Davis, J
Samarin, S
Williams, JF
Keywords: Cations
Neutron diffraction
Scanning electron microscopy
Experimental data
Zinc ions
Issue Date: 8-Aug-2013
Publisher: John Wiley and Sons
Citation: Guagliardo, P. R., Vance, E. R., Lumpkin, G. R., Blackford, M. G., Sudarshan, K., Davis, J., Samarin, S., & Williams, J. F. (2013). Positron annihilation in off-stoichiometric and ta-doped Zn2TiO4. Journal of the American Ceramic Society, 96(10), 3286-3289. doi:10.1111/jace.12454
Abstract: While Zn vacancies are regarded as the charge compensators in Ti-rich Zn2TiO4, no evidence of cation vacancies in essentially single-phase samples containing up to 13 wt% excess TiO2 was evident from positron annihilation lifetime spectroscopy (PALS). Nor was there strong evidence of cation vacancies in Ta-doped samples targeted to contain either tetrahedral or octahedral vacancies, although there was a small increase in the lifetime as the doping level increased and the structure changed from cubic to tetragonal. © 2013, The American Ceramic Society.
Gov't Doc #: 6111
ISSN: 1551-2916
Appears in Collections:Journal Articles

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