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Structural and Physical Properties of the Solid Solution Series Bi4V2−xNixO11−1.5x

✍ Scribed by Said Nadir; Hugo Steinfink

Publisher: Elsevier Science
Year: 1999
Tongue: English
Weight: 177 KB
Volume: 143
Category: Article
ISSN: 0022-4596
DOI: 10.1006/jssc.1998.8052

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✦ Synopsis

The compounds Bi 4 V 2؊x Ni x O 11؊1.5x , x40.35, were prepared by solid state reaction. The phase is present at room temperature for x40.20 and the phase is stable for greater Ni concentrations. The oxygen ion vacancies in the x ‫؍‬ 0.30 phase exist in the equatorial plane of the V/Ni coordination octahedron. The x ‫؍‬ 0.30 phase is paramagnetic. As the Ni concentration decreases the magnetic spin structure gradually changes to that of an amorphous spin glass. At 833 K the ionic conductivity ‫؍‬ 3.16؋10 ؊2 S cm ؊1 . The ionic conductivity decreases with increasing Ni concentration.

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