Crystal growth and co-substitution in (Mg1−xFex)(Mo2−xVx)O7 (0.13≤x≤0.47) with (V/Mo)O oxo double bonds
In: Journal of Alloys and Compounds, Jg. 338 (2002-05-01), S. 26-31
Online
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Zugriff:
New solid solution crystals of (Mg 1− x Fe x )(Mo 2− x V x )O 7 (0.13≤ x ≤0.47) were grown from MgO–Fe 2 O 3 –V 2 O 5 –MoO 3 melts. Single crystal X-ray diffraction studies reveal that the structure consists of (Mg/Fe) 2 O 10 octahedral dimers and [(Mo 2− x V x )O 7 ] (2+ x )− tetrahedral clusters. The structure contains (V/Mo)O oxo double bonds similar to MgMo 2 O 7 and FeVMoO 7 . Equimolar co-substitution of V 5+ for Mo 6+ and Fe 3+ for Mg 2+ avoids the creation of any ion vacancies or interstitials and generates disordered cation sites. Crystal data: for (Mg 0.87 Fe 0.13 )(Mo 1.87 V 0.13 )O 7 , monoclinic, space group P 2 1 / n (No. 14), with a =8.3356(6) A, b =9.1079(6) A, c =8.5086(6) A, β =111.927(1)° and Z =4; for (Mg 0.53 Fe 0.47 )(Mo 1.53 V 0.47 )O 7 , monoclinic, space group P 2 1 / n (No. 14), with a =8.2766(6) A, b =9.0208(7) A, c =8.4817(6) A, β =112.144(1)° and Z =4.
Titel: |
Crystal growth and co-substitution in (Mg1−xFex)(Mo2−xVx)O7 (0.13≤x≤0.47) with (V/Mo)O oxo double bonds
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Autor/in / Beteiligte Person: | Wang, Xiandong ; Pless, Jason D. ; Norquist, Alexander J. ; Stern, Charlotte L. ; Douglas A. Vander Griend ; Poeppelmeier, Kenneth R. |
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Zeitschrift: | Journal of Alloys and Compounds, Jg. 338 (2002-05-01), S. 26-31 |
Veröffentlichung: | Elsevier BV, 2002 |
Medientyp: | unknown |
ISSN: | 0925-8388 (print) |
DOI: | 10.1016/s0925-8388(02)00178-0 |
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