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Crystal Structure of Pseudorhombohedral InFe1−xTixO3+x/2 (x=2/3)

✍ Scribed by Yuichi Michiue; Mitsuko Onoda; Akiteru Watanabe; Mamoru Watanabe; Francisco Brown; Noboru Kimizuka

Publisher
Elsevier Science
Year
2002
Tongue
English
Weight
258 KB
Volume
163
Category
Article
ISSN
0022-4596

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✦ Synopsis

The structure of pseudorhombohedral-type InFe 1؊x Ti x O 3؊x/ 2 (x ‫؍‬ 2/3) was re5ned by Rietveld pro5le 5tting. The crystal is a commensurate member of a series in a solution range on InFeO 3 +In 2 Ti 2 O 7 including incommensurate structures. The structure with the unit cell of a ‫؍‬ 5.9188(1), b ‫؍‬ 10.1112(2), and c ‫؍‬ 6.3896(1) A s , ‫؍‬ 108.018(2)3 3, and a space group P 2 1 /a is the alternate stacking of an edge-shared InO 6 octahedral layer and an Fe/Ti+O plane along c*. Metal sites on the Fe/Ti+O plane are surrounded by four oxygen atoms on the Fe/Ti+O plane and two axial ones. Electric conductivities of the order 10 ؊4 S/cm were observed for the samples at 1000 K, while the oxide ion transport number is almost zero as no electromotive force was detected by an oxygen concentration cell.

2002 Elsevier Science (USA)

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