Εξειδίκευση τύπου :	Άρθρο σε επιστημονικό περιοδικό
Τίτλος:	Zinc borate glasses: properties, structure and modelling of the composition-dependence of borate speciation
Δημιουργός/Συγγραφέας:	Topper, Brian Möncke, Doris Youngman, Randall E Valvi, Christina [EL] Καμίτσος, Ευστράτιος Ι.[EN] Kamitsos, Efstratios I. Varsamis, Christos P E
Ημερομηνία:	2023-02-22
Γλώσσα:	Αγγλικά
DOI:	10.1039/d2cp05517a
Άλλο:	36752128
Περίληψη:	The short-range order of binary zinc borate glasses, xZnO-(1-x)B2O3, has been quantitatively described as a function of ZnO content over the entire glass forming range for the first time, to the best of our knowledge. Multiple spectroscopic techniques (11B NMR, Raman, infrared) reveal detailed structural information regarding borate speciation and network connectivity, and a new model for quantifying the molar fractions of short-range order units is proposed. A consistent thermal history dependence for the fraction of tetrahedral boron (N4) is well accounted for by the proposed model. The model predicts density within 0.1% of experimental values and N4 to within 1% of NMR values. The intermediate character of four-coordinated zinc in borate glasses of this series is evident by the far infrared profiles and the glass transition temperature behavior, which decreases non-monotonically with increasing ZnO content.
Τίτλος πηγής δημοσίευσης:	Physical chemistry chemical physics : PCCP
Τόμος/Κεφάλαιο:	25
Τεύχος:	8
Θεματική Κατηγορία:	[EL] Φυσική και θεωρητική χημεία[EN] Physical and theoretical chemistry [EL] Φασματοσκοπία[EN] Spectroscopy
Λέξεις-Κλειδιά:	glass transition composition dependence zinc oxide II-VI semiconductors
EU Grant:	National Infrastructure in Nanotechnology, Advanced Materials and Micro-/Nanoelectronics
EU Grant identifier:	MIS 5002772 Grant No. DMR-1626164
Κάτοχος πνευματικών δικαιωμάτων:	This journal is © the Owner Societies 2023
Όροι και προϋποθέσεις δικαιωμάτων:	This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence.
Ηλεκτρονική διεύθυνση στον εκδότη (link):	https://doi.org/10.1039/D2CP05517A
Εμφανίζεται στις συλλογές:	Ινστιτούτο Θεωρητικής και Φυσικής Χημείας (ΙΘΦΧ) - Επιστημονικό έργο