EPR STUDY OF CR3+ DOPING CENTERS IN MG2SIO 4: CR,LI CRYSTALS AND A COMPUTER STRUCTURE SIMULATION

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dc.contributor.author Mineeva R.M.
dc.contributor.author Kamozin P.N.
dc.contributor.author Dudnikova V.B.
dc.contributor.author Urusov V.S.
dc.contributor.author Gaister A.V.
dc.contributor.author Zharikov E.V.
dc.date.accessioned 2022-01-16T05:05:33Z
dc.date.available 2022-01-16T05:05:33Z
dc.date.issued 2003
dc.identifier https://www.elibrary.ru/item.asp?id=13444119
dc.identifier.citation Geochemistry International, 2003, 41, 2, 182-186
dc.identifier.issn 0016-7029
dc.identifier.uri https://repository.geologyscience.ru/handle/123456789/34351
dc.description.abstract Powdered samples of Mg2SiO4: Cr and Mg 2SiO4: Cr,Li crystals have been studied using EPR spectroscopy. In chromium-doped forsterite crystals, Cr M31+ and Cr M32+ octahedral centers and tetrahedral Cr4+ centers have been found (all of these centers have been described previously). In chromium- and lithium-codoped forsterite crystals, two previously unknown centers have been found in addition to the CrM31+ and CrM32+ centers. These newly discovered centers have EPR parameters similar to those in lithium-free crystals. The EPR parameters of Cr3+ centers in Mg2SiO4 : Cr, Mg 2SiO4 : Cr, Li, and Mg2SiO 4 : Cr,Al crystals have been analyzed. A computer structure simulation has shown that new centers, which are the chromium-lithium associations CrM31+ -LiM+1 and Cr M32+ -LiM+1, exist in Mg2SiO4 : Cr,Li crystals along with the CrM31+ and CrM32+ centers.
dc.title EPR STUDY OF CR3+ DOPING CENTERS IN MG2SIO 4: CR,LI CRYSTALS AND A COMPUTER STRUCTURE SIMULATION
dc.type Статья


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