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Damping mechanism in the novel La 2 Mo 2 O 9 -based oxide-ion conductors

Fang, Q F; Wang, Xinmei; Zhang, Guishan; Yi, Zhiguo

Description

In this paper, the microscopic diffusion mechanism of oxygen vacancies in the oxygen-ion conductors La2-xAxMo2O9 with A = Bi, K and x = 0-0.15 are studied by the low frequency internal friction measurements. An internal friction peak associated with the phase transition around 833 K and two relaxation peaks associated with the short-distance diffusion of oxygen vacancies were observed in all samples. With increasing K and Bi doping contents, the activation energies of both relaxation peaks...[Show more]

CollectionsANU Research Publications
Date published: 2003
Type: Journal article
URI: http://hdl.handle.net/1885/59116
Source: Journal of Alloys and Compounds
DOI: 10.1016/S0925-8388(03)00278-0

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