Luminescent, Structural, and Thermal Properties of the Unusual Anatolian Diaspore (Zultanite) from Turkey

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dc.contributor.authorCanimoglu, A
dc.contributor.authorGarcia-Guinea, J
dc.contributor.authorCorrecher, V
dc.contributor.authorKarabulut, Y
dc.contributor.authorTuncer, Y
dc.contributor.authorCan, N
dc.date.accessioned2024-07-18T12:05:38Z
dc.date.available2024-07-18T12:05:38Z
dc.description.abstractResults are presented for the cathodoluminescence (CL) probe of an environmental scanning electron microscopy (ESEM) with an energy-dispersive spectrometry analyzer (EDS), thermoluminescence (TL), thermo X-ray diffraction in situ (TXRD), and simultaneous differential thermal analysis and thermogravimetric analysis (DTA/TGA) techniques of gem-quality zultanite samples collected from the Mugla region of southwest Turkey. Micro-Raman measurements were also performed on different zultanite orientations and preheated aliquots to study the spectral phase transition diaspore-corundum also detected by the other thermal techniques in the 450 degrees C-500 degrees C thermal range. The thermal phenomena of TL are synchronous with this dehydroxylation process, involving consecutive breaking-linking bonds of Al-O, Cr-O, Fe-O, Al-OH, Cr-OH, and Fe-OH, including the formation of hydrolyzed ions such , and and redox reactions. Assuming that zultanite oxygen atoms are distributed as a hexagonal close packed layer, the experimental spectrum CL of zultanite is characteristic of the E-2 ->(4)A(2) transitions of substitutional Cr3+ luminescent centers in positions of Al3+ in sixfold coordination.
dc.identifier.issn0038-7010
dc.identifier.other1532-2289
dc.identifier.urihttp://akademikarsiv.cbu.edu.tr:4000/handle/123456789/9873
dc.language.isoEnglish
dc.publisherTAYLOR & FRANCIS INC
dc.subjectTHERMOLUMINESCENCE
dc.subjectDIFFRACTION
dc.subjectALPHA-AL2O3
dc.subjectBAUXITES
dc.subjectSPECTRA
dc.titleLuminescent, Structural, and Thermal Properties of the Unusual Anatolian Diaspore (Zultanite) from Turkey
dc.typeArticle

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