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 |
|---|---|
| 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 |
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Keywords
- Cation vacancies
- Molybdate
- Neutron diffraction
- Vanadate
ASJC Scopus subject areas
- Metals and Alloys
Cite this
Vanadium and molybdenum disorder in M2.5VMoO8 (M = Mg, Mn, and Zn) determined with neutron powder diffraction and phase formation studies of Mg2.5+xV1+2xMo1-2xO8. / Wang, Xiandong; Pless, Jason D.; Griend, Douglas A Vander; Stair, Peter C; Poeppelmeier, Kenneth R; Hu, Zhongbo; Jorgensen, James D.
In: Journal of Alloys and Compounds, Vol. 379, No. 1-2, 06.10.2004, p. 87-94.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Vanadium and molybdenum disorder in M2.5VMoO8 (M = Mg, Mn, and Zn) determined with neutron powder diffraction and phase formation studies of Mg2.5+xV1+2xMo1-2xO8
AU - Wang, Xiandong
AU - Pless, Jason D.
AU - Griend, Douglas A Vander
AU - Stair, Peter C
AU - Poeppelmeier, Kenneth R
AU - Hu, Zhongbo
AU - Jorgensen, James D.
PY - 2004/10/6
Y1 - 2004/10/6
N2 - 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.
AB - 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.
KW - Cation vacancies
KW - Molybdate
KW - Neutron diffraction
KW - Vanadate
UR - http://www.scopus.com/inward/record.url?scp=4544344210&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=4544344210&partnerID=8YFLogxK
U2 - 10.1016/j.jallcom.2004.02.015
DO - 10.1016/j.jallcom.2004.02.015
M3 - Article
VL - 379
SP - 87
EP - 94
JO - Journal of Alloys and Compounds
JF - Journal of Alloys and Compounds
SN - 0925-8388
IS - 1-2
ER -