Εξειδίκευση τύπου :	Άρθρο σε επιστημονικό περιοδικό
Τίτλος:	Structure and magnetic properties of BeO-Fe2O3-Al2O3-TeO2 glass-ceramic composites
Δημιουργός/Συγγραφέας:	Wójcik, N.A. Tagiara, N.S. Ali, S. Górnicka, K. Segawa, H. Klimczuk, T. Jonson, B. Möncke, D. [EL] Καμίτσος, Ευστράτιος Ι.[EN] Kamitsos, Efstratios I.
Εκδότης:	Elsevier
Ημερομηνία:	2021
Γλώσσα:	Αγγλικά
ISSN:	09552219
DOI:	10.1016/j.jeurceramsoc.2021.04.005
Περίληψη:	In this work, glass-ceramics in the xBeO–20Fe2O3–(80-x)TeO2 system with x = 0–25 mol% were synthesized by the traditional melt quenching route and studied by inductively coupled plasma optical emission spectroscopy, X-ray diffraction, confocal microscopy, infrared and Raman spectroscopy. BeO addition was found to support the crystallization process of Fe2O3 during melting, and an increased BeO content was associated with an increased fraction of the crystalline Fe2O3 phase and an increased size of these crystallites. Furthermore, samples doped with BeO exhibit an increasing polymerization of the residual tellurite glass network compared to the undoped sample. The magnetic properties and specific heat of all synthesized materials were measured, and the results show that all studied samples behave as spin-glasses. Also, the Morin transition of hematite was observed at 260 K with intensity depending on the material content in Fe2O3 crystalline phase, the formation of which correlates with the amount of added BeO.
Τίτλος πηγής δημοσίευσης:	Journal of the European Ceramic Society
Τόμος/Κεφάλαιο:	41
Τεύχος:	10
Σελίδες:	5214–5222
Θεματική Κατηγορία:	[EL] Φυσική και θεωρητική χημεία[EN] Physical and theoretical chemistry [EL] Φασματοσκοπία[EN] Spectroscopy [EL] Χημεία (Γενικά)[EN] Chemistry (General)
Λέξεις-Κλειδιά:	Raman spectroscopy IR spectroscopy Beryllium-iron-tellurite glasses Magnetic properties Spin-glass
EU Grant identifier:	20160900 2015- 04809 MIS 5002772 NSRF 2014-2020
Κάτοχος πνευματικών δικαιωμάτων:	© 2021 Elsevier B.V. All rights reserved.
Σημειώσεις:	SA and NW acknowledge the financial support from the Crafoord Foundation (Grant No: 20160900) and Vinnova (Grant No. 2015- 04809). NST and EIK acknowledge support by the project “National Infrastructure in Nanotechnology, Advanced Materials and Micro-/ Nanoelectronics” (MIS 5002772), funded by the Operational Pro- gramme “Competitiveness, Entrepreneurship and Innovation” (NSRF 2014-2020) and co-financed by Greece and the European Union (Euro- pean Regional Development Fund).
Εμφανίζεται στις συλλογές:	Ινστιτούτο Θεωρητικής και Φυσικής Χημείας (ΙΘΦΧ) - Επιστημονικό έργο