Abstract
Disorder between the vanadium and molybdenum sites was investigated using neutron diffraction on polycrystalline samples of M2.5VMoO 8 (M=Mg2+, Mn2+, Zn2+) and the distribution of V5+ and Mo6+ among the tetrahedral sites was determined to be nearly statistical. The refined structures for all three polycrystalline samples corroborate those of corresponding single crystals determined previously with X-ray single crystal diffraction. Studies directed at the formation of Mg2.5+xV1+2xMo1-2xO 8 (x=0, ±0.02 and ±0.04) demonstrate that the phase begins to form at an appreciable rate at 1173K, which is approximately 250K below its melting point.
Original language | English |
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Pages (from-to) | 87-94 |
Number of pages | 8 |
Journal | Journal of Alloys and Compounds |
Volume | 379 |
Issue number | 1-2 |
DOIs | |
Publication status | Published - Oct 6 2004 |
Keywords
- Cation vacancies
- Molybdate
- Neutron diffraction
- Vanadate
ASJC Scopus subject areas
- Mechanics of Materials
- Mechanical Engineering
- Metals and Alloys
- Materials Chemistry