Εξειδίκευση τύπου :	Άρθρο σε επιστημονικό περιοδικό
Τίτλος:	Yttrium and rare-earth modified lithium orthoborates: Glass formation and vibrational activity
Δημιουργός/Συγγραφέας:	Topper, Brian Tagiara, Nagia S. Herrmann, Andreas [EL] Καμίτσος, Ευστράτιος Ι.[EN] Kamitsos, Efstratios I. Möncke, Doris
Εκδότης:	Elsevier
Ημερομηνία:	2022-01
Γλώσσα:	Αγγλικά
DOI:	10.1016/j.jnoncrysol.2021.121152
Περίληψη:	Glass formation and structure-property relations were explored in highly modified borate glasses containing high loads of rare-earth elements, whose crystalline analogues display a trigonal to tetrahedral borate phase transition (BO33− → BØ2O23−, where Ø and O− indicate bridging and non-bridging oxygen atoms). The resulting borate networks are completely depolymerized, where borate anions are crosslinked to rare-earth and modifier cations via ionic bonds. The borate structure was found to be based on a single structural unit, BO33− triangles, whose fundamental vibrations are all active in both the Raman and infrared. The local environment of the rare-earth ions in orthoborate glasses was studied with far infrared spectroscopy and, in some cases, by using terbium as a probe ion. A linear correlation was obtained between the effective force constant in the far infrared and the field strength of the rare-earth cation.
Τίτλος πηγής δημοσίευσης:	Journal of Non-crystalline Solids
Τόμος/Κεφάλαιο:	575
Θεματική Κατηγορία:	[EL] Φασματοσκοπία[EN] Spectroscopy [EL] Φυσική και θεωρητική χημεία[EN] Physical and theoretical chemistry
Λέξεις-Κλειδιά:	Invert glass Rare-earth borate Raman spectroscopy Infrared spectroscopy Tb3+ Lifetime Borate glass
Κάτοχος πνευματικών δικαιωμάτων:	2021 Elsevier B.V. All rights reserved.
Ηλεκτρονική διεύθυνση στον εκδότη (link):	https://www.sciencedirect.com/science/article/pii/S0022309321005159?via%3Dihub#keys0001
Εμφανίζεται στις συλλογές:	Ινστιτούτο Θεωρητικής και Φυσικής Χημείας (ΙΘΦΧ) - Επιστημονικό έργο