Search results for "magnesium aluminium spinel"

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Structure and Phase Changes in Natural and Synthetic Magnesium Aluminum Spinel

2015

Natural spinel crystals from Ural and Pamir deposits and synthetic magnesium aluminium spinel single crystals with different stoichiometry (MgO.nAl2O3 ) grown by Verneuil method were used. The photoluminescence (PL), its excitation (PLE) and optical absorption of stoichiometric and nonstoichiometric magnesium aluminium spinel crystals containing the chromium and manganese ions and defects produced by fast neutron irradiation( fluence up to 1020cm-2, E&gt;0.1 MeV) are investigated. The broadening of R- and N-lines takes place in synthetic stoichiometric spinel. Structure of synthetic nonstoichiometric spinels (n&gt;1) has to be more disordered, since in addition to the site exchange …

Materials sciencePhotoluminescenceMagnesiumSpinelInorganic chemistryAnalytical chemistrychemistry.chemical_elementManganeseengineering.materialChromiumchemistryAluminiumengineeringIrradiationStoichiometrymagnesium aluminium spinel; neutron irradiation; absorption and luminescence spectraEnvironment. Technology. Resources. Proceedings of the International Scientific and Practical Conference

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