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

Xiandong Wang; Jason D. Pless; Douglas A.Vander Griend; Peter C. Stair; Kenneth R. Poeppelmeier; Zhongbo Hu; James D. Jorgensen

doi:10.1016/j.jallcom.2004.02.015

Vanadium and molybdenum disorder in M_2.5VMoO₈ (M = Mg, Mn, and Zn) determined with neutron powder diffraction and phase formation studies of Mg_2.5+xV_1+2xMo_1-2xO₈

Xiandong Wang, Jason D. Pless, Douglas A.Vander Griend, Peter C. Stair, Kenneth R. Poeppelmeier^*, Zhongbo Hu, James D. Jorgensen

^*Corresponding author for this work

Chemistry

Research output: Contribution to journal › Article › peer-review

15 Scopus citations

Abstract

Disorder between the vanadium and molybdenum sites was investigated using neutron diffraction on polycrystalline samples of M_2.5VMoO 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 Mg_2.5+xV_1+2xMo_1-2xO 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 (US)
Pages (from-to)	87-94
Number of pages	8
Journal	Journal of Alloys and Compounds
Volume	379
Issue number	1-2
DOIs	https://doi.org/10.1016/j.jallcom.2004.02.015
State	Published - Oct 6 2004

Funding

The authors gratefully acknowledge the National Science Foundation, Solid State Chemistry (Award nos. DMR-9412971 and DMR-9727516) and from the EMSI program of the National Science Foundation and at the Northwestern University Institute for Environmental Catalysis (Grant No. 9810378) for support of this work. The authors made use of the Central Facilities supported by the MRSEC program of the National Science Foundation (Grant DMR-0076097) at the Materials Research Center of Northwestern University. The work at the Intense Pulse Neutron Source (IPNS) at Argonne National Lab was supported by DOE W-31-109-ENG-38.

Keywords

Cation vacancies
Molybdate
Neutron diffraction
Vanadate

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

Access to Document

10.1016/j.jallcom.2004.02.015

Cite this

Wang, X., Pless, J. D., Griend, D. A. V., Stair, P. C., Poeppelmeier, K. R., Hu, Z., & Jorgensen, J. D. (2004). Vanadium and molybdenum disorder in M_2.5VMoO₈ (M = Mg, Mn, and Zn) determined with neutron powder diffraction and phase formation studies of Mg_2.5+xV_1+2xMo_1-2xO₈. Journal of Alloys and Compounds, 379(1-2), 87-94. https://doi.org/10.1016/j.jallcom.2004.02.015

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title = "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",

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.",

keywords = "Cation vacancies, Molybdate, Neutron diffraction, Vanadate",

author = "Xiandong Wang and Pless, {Jason D.} and Griend, {Douglas A.Vander} and Stair, {Peter C.} and Poeppelmeier, {Kenneth R.} and Zhongbo Hu and Jorgensen, {James D.}",

note = "Funding Information: The authors gratefully acknowledge the National Science Foundation, Solid State Chemistry (Award nos. DMR-9412971 and DMR-9727516) and from the EMSI program of the National Science Foundation and at the Northwestern University Institute for Environmental Catalysis (Grant No. 9810378) for support of this work. The authors made use of the Central Facilities supported by the MRSEC program of the National Science Foundation (Grant DMR-0076097) at the Materials Research Center of Northwestern University. The work at the Intense Pulse Neutron Source (IPNS) at Argonne National Lab was supported by DOE W-31-109-ENG-38.",

year = "2004",

month = oct,

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doi = "10.1016/j.jallcom.2004.02.015",

language = "English (US)",

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Vanadium and molybdenum disorder in M_2.5VMoO₈ (M = Mg, Mn, and Zn) determined with neutron powder diffraction and phase formation studies of Mg_2.5+xV_1+2xMo_1-2xO₈. / Wang, Xiandong; Pless, Jason D.; Griend, Douglas A.Vander et al.
In: Journal of Alloys and Compounds, Vol. 379, No. 1-2, 06.10.2004, p. 87-94.

Research output: Contribution to journal › Article › peer-review

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.

N1 - Funding Information: The authors gratefully acknowledge the National Science Foundation, Solid State Chemistry (Award nos. DMR-9412971 and DMR-9727516) and from the EMSI program of the National Science Foundation and at the Northwestern University Institute for Environmental Catalysis (Grant No. 9810378) for support of this work. The authors made use of the Central Facilities supported by the MRSEC program of the National Science Foundation (Grant DMR-0076097) at the Materials Research Center of Northwestern University. The work at the Intense Pulse Neutron Source (IPNS) at Argonne National Lab was supported by DOE W-31-109-ENG-38.

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

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