Influence of DSPP on the properties of AgI

For this investigation AgI was used as a matrix and η-Al2O3(0.05 μm) or ∝-Fe2O3 (0.6 μm) were taken as dispersed second phase particles (DSPP). The conductivity in β phase was increased remarking by the addition of DSPP. The maximum increment appears at 40 m/o for η-Al2O3 and 30 m/o for ∝-Fe2O3. The...

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Bibliographic Details
Published in:Solid state ionics 1983-12, Vol.9-10, p.1175-1178
Main Authors: Zong-yuan, Zhao, Chao-ying, Wang, Sou-yu, Dai, Li-quan, Chen
Format: Article
Language:English
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Summary:For this investigation AgI was used as a matrix and η-Al2O3(0.05 μm) or ∝-Fe2O3 (0.6 μm) were taken as dispersed second phase particles (DSPP). The conductivity in β phase was increased remarking by the addition of DSPP. The maximum increment appears at 40 m/o for η-Al2O3 and 30 m/o for ∝-Fe2O3. The conductivity of β-AgI(40 m/o η-Al2O3) is three orders of magnitude higher than that of pure β-AgI at room temperature. The activation energies are obviously decreased. The conductivity in ∝-AgI containing DSPP decreases and the activation energy increases. It is found that DSPP influences the phase transition, especially ∝ to β transition. As a result the ∝ to β phase transition temperature of AgI(50 m/o η-Al2O3) is about 17 °C lower than that of pure AgI. Mössbauer spectrum of AgI(∝-Fe2O3 covered with 57Fe) has been studied. It is suggested from the results that both bulk and interfacial effects exist in AgI (∝-Fe2O3).
ISSN:0167-2738
1872-7689
DOI:10.1016/0167-2738(83)90148-0