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Functional Glass Ceramic Materials and Their Applications Based on Electrical Properties

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Advanced Composites".

Deadline for manuscript submissions: closed (10 July 2022) | Viewed by 1922

Special Issue Editor


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Guest Editor
University of Mons, Materials Institute, Rue de l’Epargne 56, 7000 Mons, Belgium
Interests: ceramics and glass ceramics processes; piezoelectics properties
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The interest in glass ceramics began in the 1960s with materials exhibiting low thermal expansion coefficients that, associated with a good mechanical strength, provide a high resistance to thermal shock. Even if the applications based on the thermomechanical properties have dominated the industrial development of these materials over numerous years, the investigation of functional glass ceramics has rapidly attracted the attention of the research world, inter alia, for biomedical or electrical purposes.

Usually produced by the crystallization of a parent glass precursor, several alternative fabrication routes have been proposed to master the crystallization and the residual glassy matrix and lead thereby to specific microstructures and the combination of properties hardly achievable trough the conventional ceramic process.

The aim of this Special Issue is to promote the most recent research works in the field of glass ceramics materials and their applications, which exploit electrical properties, such as dielectric, pyroelectric, piezoelectric properties; insulation/conduction; ionic conduction.

Within the scope of this Special Issue, it is our pleasure to invite you to submit original research papers, short communications, or state-of-the-art reviews. The topics of interest include, but are not limited to:

  • Alternative fabrication routes such as additive manufacturing;
  • Correlation processing/microstructure/properties;
  • Modeling of processes or properties;
  • Design of functional devices;
  • Innovative characterization methods.

Prof. Dr. Maurice Gonon
Guest Editor

Manuscript Submission Information

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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 ceramic
  • synthesis
  • fabrication routes
  • shapping
  • piezoelectric properties
  • dielectric properties
  • pyroelectric properties
  • ionic conduction
  • conduction
  • modelling

Published Papers (1 paper)

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Research

15 pages, 7271 KiB  
Article
Effect of Partial Ba Substitutions on the Crystallization of Sr2TiSi2O8 (STS) Glass–Ceramics and on the Generation of a SAW Signal at High Temperatures
by Maurice Gonon, Florian Dupla, Hassan Alhousseini, Marc Duquennoy, Nikolay Smagin and Grégory Martic
Materials 2021, 14(16), 4648; https://0-doi-org.brum.beds.ac.uk/10.3390/ma14164648 - 18 Aug 2021
Viewed by 1505
Abstract
Because of their characteristics, including a d33 of 10–15 pC/N and high stability up to temperatures over 1000 °C, polar glass–ceramics containing fresnoite crystals can be regarded as highly effective materials for applications requiring piezoelectricity at high temperatures. In the present paper [...] Read more.
Because of their characteristics, including a d33 of 10–15 pC/N and high stability up to temperatures over 1000 °C, polar glass–ceramics containing fresnoite crystals can be regarded as highly effective materials for applications requiring piezoelectricity at high temperatures. In the present paper we investigate barium substitutions in an Sr-fresnoite (STS) glass–ceramic. Two aspects are studied: first, the effect of the substitution on the preferential orientation of the crystallization, and second, the ability of the glass–ceramics to generate and propagate surface acoustic waves (SAW) at high temperatures. XRD analyses show that a 10 at.% substitution of Ba allows us to keep a strong preferential orientation of the (00l) planes of the fresnoite crystals down to more than 1 mm below the surfaces. Higher substitution levels (25 and 50 at.%), induce a non-oriented volume crystallization mechanism that competes with the surface mechanism. SAW devices were fabricated from glass–ceramic substrates with 0, 10 and 25 at.% Ba substitutions. Temperature testing reveals the high stability of the frequency and delay for all of these devices. The glass–ceramic with a 10 at.% Ba substitution gives the strongest amplitude of the SAW signal. This is attributed to the high (00l) preferential orientation and the absence of disoriented volume crystallization. Full article
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