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Author Nadir, S. ♦ Steinfink, H.
Sponsorship Welch (Robert A.) Foundation, Houston, TX (United States)
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword MATERIALS SCIENCE ♦ CRYSTAL STRUCTURE ♦ MAGNETIC SUSCEPTIBILITY ♦ IONIC CONDUCTIVITY ♦ BISMUTH OXIDES ♦ VANADIUM OXIDES ♦ NICKEL OXIDES ♦ SOLID SOLUTIONS ♦ X-RAY DIFFRACTION ♦ EXPERIMENTAL DATA
Abstract The compounds Bi{sub 4}V{sub 2{minus}x}Ni{sub x}O{sub 11{minus}1.5x}, x {le} 0.35, were prepared by solid state reaction. The {alpha} phase is present at room temperature for x {le} 0.20 and the {gamma} 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 {sigma} = 3.16 {times} 10{sup {minus}2} S cm{sup {minus}1}. The ionic conductivity decreases with increasing Ni concentration.
ISSN 00224596
Educational Use Research
Learning Resource Type Article
Publisher Date 1999-02-15
Publisher Place United States
Journal Journal of Solid State Chemistry
Volume Number 143
Issue Number 1