Positron Annihilation in Off‐Stoichiometric and Ta‐Doped Zn2TiO4. Issue 10 (8th August 2013)

• Record Type: Journal Article
• Authors: Guagliardo, Paul R.; Vance, Eric R.; Lumpkin, Gregory R.; Blackford, Mark G.; Sudarshan, Kathi; Davis, Joel; Samarin, Sergey; Williams, James F.; Vanderah, T.
• Is Part Of: Journal of the American Ceramic Society. Volume 96:Issue 10(2013)
• Page Start: 3286
• Page End: 3289
• Publication Date: 2013-08-08
• Subjects: Ceramics -- Periodicals; 620.1405
• DOI: 10.1111/jace.12454
• Languages: English
• ISSNs: 0002-7820

Abstract

<abstract abstract-type="main" id="jace12454-abs-0001"> <title> <x xml:space="preserve">Abstract</x> </title> <p>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.</p> </abstract>