Εξειδίκευση τύπου :	Άρθρο σε επιστημονικό περιοδικό
Τίτλος:	Pure TeO2 glass: Influence of synthesis conditions on linear and non-linear optical, magneto-optical and structural properties
Δημιουργός/Συγγραφέας:	Hrabovsky, J. Tagiara, Nagia S. Mistrik, J. Strizik, L. Rysanek, P. Kopecky Jr., V. Kozlik, J. Orava, J. Wang, S. Ishibashi, T. [EL] Καμίτσος, Ευστράτιος Ι.[EN] Kamitsos, Efstratios I. Veis, M.
Ημερομηνία:	2024
Γλώσσα:	Αγγλικά
ISSN:	09258388
DOI:	10.1016/j.jallcom.2024.174788
Περίληψη:	The first systematic study of linear and non-linear optical, magneto-optical and structural properties of pure TeO2 glass is presented with regard to different synthesis and material processing conditions. Prepared glasses were synthesized by the intermittent quenching from 900 ∘C in platinum or alumina crucibles and characterized prior to and after optical polishing. The position of the long-wavelength/phonon absorption edge was investigated using various optical models and experimentally obtained data of refractive index and Verdet constants were used for the estimation of magneto-optical anomaly parameter. During synthesis in alumina crucible, up to about 11 wt.% of Al2O3 incorporates into the glass (verified by EDS/XRF and Raman/FTIR spectroscopy) partially transforming the original pure TeO2 glass backbone structure composed of [TeO4] trigonal bipyramids to [TeO3+1] and [TeO3] structural units with the expected integration of Al into Te−O−Al bridges. The presence of Al2O3 results in lowered density ρ (5.60 → 4.72 g cm−3), refractive index n1550 (2.086 → 1.927) and Verdet constant V632 (36.3 → 21.9 rad T−1 m−1) and in increased optical-band-gap energy Eg (3.69 → 3.72 eV) and Abbe number νD (19.9 → 26.9) compared to pure TeO2 glass prepared in platinum crucible. A dataset of the obtained complex optical parameters (refractive index and extinction coefficient) in the wide spectral range of 193 − 11000 nm is included in the supplementary part.
Τίτλος πηγής δημοσίευσης:	Journal of Alloys and Compounds
Τόμος/Κεφάλαιο:	997
Θεματική Κατηγορία:	[EL] Εφαρμοσμένη οπτική. Φωτονική[EN] Applied optics. Photonics [EL] Φυσική και θεωρητική χημεία[EN] Physical and theoretical chemistry
Λέξεις-Κλειδιά:	tellurite glass optical properties magneto-optical properties structural properties alumina (Al2O3) spectral range photonic applications
Ηλεκτρονική διεύθυνση στον εκδότη (link):	https://doi.org/10.1016/j.jallcom.2024.174788
Εμφανίζεται στις συλλογές:	Ινστιτούτο Θεωρητικής και Φυσικής Χημείας (ΙΘΦΧ) - Επιστημονικό έργο