VANADIUM DISTRIBUTION BETWEEN FORSTERITE AND ITS MELT: THE STRUCTURAL AND OXIDATION STATE OF VANADIUM

dc.contributor.author	Dudnikova V.B.
dc.date.accessioned	2021-02-24T07:55:59Z
dc.date.available	2021-02-24T07:55:59Z
dc.date.issued	2001
dc.identifier	https://elibrary.ru/item.asp?id=13384103
dc.identifier.citation	Geochemistry International, 2001, 39, 7, 667-675
dc.identifier.issn	0016-7029
dc.identifier.uri	https://repository.geologyscience.ru/handle/123456789/25616
dc.description.abstract	Forsterite single crystals doped with vanadium were grown from melt using the Czochralski technique in various oxidation-reduction conditions: nitrogen, nitrogen with oxygen, argon, and argon with hydrogen atmospheres. The forsterite crystal/melt distribution coefficient is 0.07. Spectra of optical absorption within the range of 350-1600 nm, luminescence spectra, and the dependence of crystal density on vanadium content were studied. A thermodynamic analysis of the most probable oxidation state of vanadium together with a computer simulation of the forsterite crystal structure were also performed. A comprehensive study revealed that the forsterite crystals synthesized by the Czochralski technique mainly contain tetravalent vanadium, which substitutes for silicon. The oxidation state of this element can be changed to V3+ or V5+ by annealing the crystals under reducing or oxidizing conditions, respectively.
dc.title	VANADIUM DISTRIBUTION BETWEEN FORSTERITE AND ITS MELT: THE STRUCTURAL AND OXIDATION STATE OF VANADIUM
dc.type	Статья

Files in this item

Name: Dudn_01.pdf

Size: 242.2Kb

Format: PDF