Details

Autor(en) / Beteiligte

• Zhuang, Yan
• Lin, Yanzheng
• Zhu, Dongyan
• Zheng, Yufang
• Yu, Zhengfang

Titel

A Study of Conductivity in the Sr(Fe1−xTix)O3−δ System

Ist Teil von

• Journal of the American Ceramic Society, 1989-08, Vol.72 (8), p.1444-1446

Ort / Verlag

Oxford, UK: Blackwell Publishing Ltd

Erscheinungsjahr

1989

Quelle

Wiley Online Library Journals Frontfile Complete

Beschreibungen/Notizen

• The conductivity and conductivity‐temperature characteristics of the Sr(Fe1−xTixO3−δ system fired in air are studied by means of Mössbauer spectroscopy at room temperature and at 78 K. On the basis of quantitative analysis of the Fe4+ content in the solid solution, the concentrations of oxygen vacancies are calculated and the relationship between Fe4+ content and conductivity is found. It is also found that the turning points of conductivity and material constant B, as well as Fe4+ and the percentage of oxygen vacancies, occur at x=0.7 on the curve. When x=0.7, Fe3+ (II), which has never been reported before, disappears and the lattice parameters no longer vary with x. Besides Fe4+, Fe3+(II) is also a factor affecting the conductivity of this system.