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Materials
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Glass-Ceramics: Structural Investigations and Luminescence Properties
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Glass-Ceramics: Structural Investigations and Luminescence Properties

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Advanced and Functional Ceramics and Glasses".

Deadline for manuscript submissions: closed (31 December 2021) | Viewed by 6016

Special Issue Editors

Dr. Philippe Thomas

E-Mail Website
Guest Editor
Institute of Research for Ceramics, IRCER UMR 7315 CNRS, Limoges University, Limoges, France
Interests: material science; crystal chemistry; glasses; glass-ceramics; ceramics; structure of glasses and crystals; optical properties
Dr. Sebastien Chenu

E-Mail Website
Guest Editor
Institute of Research for Ceramics, IRCER UMR 7315 CNRS, Limoges University, Limoges, France
Interests: chemistry; material science; glasses; glass-ceramics; phase separation; transparent ceramics

Special Issue Information

Dear Colleagues,

Glass-ceramics are actually under intense investigations as they present many promising advantages concerning the corresponding glasses by enhancing their properties (for example, chemical, mechanical, and optical) and allowing combinations of different properties inherent to the existence of at least one crystal phase in a glassy matrix.

In this Special Issue, different aspects of glass-ceramics elaboration using classical (nucleation and growth) and specific crystallization processing (as spark plasma sintering (SPS) or microwave heating) methods will be detailed. Their crystallization behavior from the glass, their structural characterization, their physical (including thermal, mechanical, and optical) properties and consequently the evidence of the relationships between their structure and their properties (including optical ones as luminescence), will be discussed.

It is our pleasure to invite you to submit a manuscript for this Special Issue. Full papers, communications, and reviews are all welcome.

Dr. Philippe Thomas
Dr. Sebastien Chenu
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Materials is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • Glass-ceramics
  • Processing techniques
  • Crystallization
  • Thermal, chemical, optical and mechanical properties
  • Structure
  • Spectroscopic properties
  • Rare-earth doped glasses
  • Luminescence properties

Published Papers (2 papers)

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Research

14 pages, 14864 KiB  
Article
Thermal Evolutions to Glass-Ceramics Bearing Calcium Tungstate Crystals in Borate Glasses Doped with Photoluminescent Eu3+ Ions
by Takahito Otsuka, Martin Brehl, Maria Rita Cicconi, Dominique de Ligny and Tomokatsu Hayakawa
Materials 2021, 14(4), 952; https://doi.org/10.3390/ma14040952 - 18 Feb 2021
Cited by 9 | Viewed by 3182
Abstract
Thermal evolutions of calcium-tungstate-borate glasses were investigated for the development of luminescent glass-ceramics by using Eu3+ dopant in a borate glass matrix with calcium tungstate, which was expected to have a combined character of glass and ceramics. This study revealed that single-phase [...] Read more.
Thermal evolutions of calcium-tungstate-borate glasses were investigated for the development of luminescent glass-ceramics by using Eu3+ dopant in a borate glass matrix with calcium tungstate, which was expected to have a combined character of glass and ceramics. This study revealed that single-phase precipitation of CaWO4 crystals in borate glass matrix was possible by heat-treatment at a temperature higher than glass transition temperature Tg for (100−x) (33CaO-67B2O3)−xCa3WO6 (x = 8−15 mol%). Additionally, the crystallization of CaWO4 was found by Raman spectroscopy due to the formation of W=O double bondings of WO4 tetrahedra in the pristine glass despite starting with the higher calcium content of Ca3WO6. Eu3+ ions were excluded from the CaWO4 crystals and positioned in the borate glass phase as a stable site for them, which provided local environments in higher symmetry around Eu3+ ions. Full article
(This article belongs to the Special Issue Glass-Ceramics: Structural Investigations and Luminescence Properties)
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15 pages, 4210 KiB  
Article
Transparent Glasses and Glass-Ceramics in the Ternary System TeO2-Nb2O5-PbF2
by Juliana Santos Barbosa, Gislene Batista, Sylvain Danto, Evelyne Fargin, Thierry Cardinal, Gael Poirier and Fabia Castro Cassanjes
Materials 2021, 14(2), 317; https://doi.org/10.3390/ma14020317 - 9 Jan 2021
Cited by 14 | Viewed by 2496
Abstract
Transparent fluorotellurite glasses were prepared by melt-quenching in the ternary system TeO2-Nb2O5-PbF2. The synthesis conditions were adjusted to minimize fluorine loss monitored as HF release. It was found that 10 mol% of Nb2O [...] Read more.
Transparent fluorotellurite glasses were prepared by melt-quenching in the ternary system TeO2-Nb2O5-PbF2. The synthesis conditions were adjusted to minimize fluorine loss monitored as HF release. It was found that 10 mol% of Nb2O5 is the optimum content for PbF2 incorporation up to 35 mol% in the tellurite matrix without loss of glass forming ability. Such glass compositions exhibit a wide optical window from 380 nm to about 6 μm. Crystallization properties were carefully investigated by thermal analysis and compositions with higher PbF2 contents exhibit preferential precipitation of lead oxyfluoride Pb2OF2 at lower temperatures. The lead oxyfluoride crystallization mechanism is also governed by a volume nucleation, barely reported in tellurite glasses. Eu3+ doping of these glass compositions also promotes a more efficient nucleation step under suitable heat-treatments, resulting in transparent Eu3+-doped glass-ceramics whereas undoped glass-ceramics are translucent. Finally, Eu3+ spectroscopy pointed out a progressive, more symmetric surrounding around the rare earth ions with increasing PbF2 contents as well as higher quantum efficiencies. These new fluorotellurite glass compositions are promising as luminescent hosts working in the middle infrared. Full article
(This article belongs to the Special Issue Glass-Ceramics: Structural Investigations and Luminescence Properties)
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