Positron Annihilation Lifetime Studies of
‐Doped Nb 2, TiO 2, and Sn O 2
Positron annihilation lifetime spectroscopy (
PALS) has indicated that 2 Nb 5‐doped O 2 samples treated
in either Ar or air at 1400°C for 48 h are both charge‐compensated by TiO vacancies, but with statistically significant differences between the results. A Ti 2 Ta 5‐doped
air‐sintered O 2 sample also showed behavior similar to the TiO 2 Nb 5‐doped air‐sintered O 2.
In addition, TiO 2 Nb 5‐doped O 2 samples sintered in air at 1400°C for 1 h showed evidence of SnO
vacancy cluster formation, with no indications of Sn 2+ compensation from ultraviolet irradiation studies. Sn PALS studies of air‐sintered 2 did not show any
evidence of ZrO vacancies after doping with Zr 2 Nb 5.
No Supplementary Data
Document Type: Research Article
Publication date: 2012-05-01