Rangan, K. K. ; Verbaere, A. ; Gopalakrishnan, J. (1998) Structure of KNb0.5V0.5OPO4, a KTiOPO4 analog Materials Research Bulletin, 33 (3). pp. 395-399. ISSN 0025-5408
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Official URL: http://www.sciencedirect.com/science/article/pii/S...
Related URL: http://dx.doi.org/10.1016/S0025-5408(97)00252-3,
Abstract
The crystal structure of KNb0.5V0.5OPO4, a new KTiOPO4 isomorph, has been refined from powder X-ray diffraction data by Rietveld refinement. The structure is orthorhombic, space group Pna21, with a = 12.933(1), b = 6.4713(8), and c = 10.7273(6) Å, Z = 8. There is a preferential distribution of Nb(V) and V(III) atoms in the octahedral M(1) [0.806Nb, 0.194V] and M(2) [0.194Nb, 0.806V] sites, the M(1)O6 octahedra being more distorted than the M(2)O6 octahedra. The results are compared with other KTiOPO4 derivatives.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| Keywords: | A. Optical Materials; C. X-ray Diffraction; D. Crystal Structure |
| ID Code: | 84301 |
| Deposited On: | 24 Feb 2012 15:33 |
| Last Modified: | 24 Feb 2012 15:33 |
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