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Electrical and Dielectric Properties of Glass-Ceramic Materials and Their Applications
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Electrical and Dielectric Properties of Glass-Ceramic Materials and Their Applications

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 (20 June 2023) | Viewed by 5199

Special Issue Editor

Prof. Dr. Elhouichet Habib

E-Mail Website
Guest Editor
Sciences Faculty of Tunis, University of Tunis El Manar, Tunis 2092, Tunisia Physics Department, College of Sciences, University of Bisha, P.O. Box 551, Bisha 61922, Saudi Arabia
Interests: glass-ceramics; photonics; electric and dielectric properties; nanomaterials; photocatalysis; energy storage

Special Issue Information

Dear Colleagues,

Interest in glass-ceramics began in the 1960s with materials exhibiting low thermal expansion coefficients that, associated with good mechanical strength, provide 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 through 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, and piezoelectric properties, insulation/conduction, and 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. Elhouichet Habib
Guest Editor

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
  • glass crystallization
  • structural and thermal properties of glass-ceramics
  • electrical and dielectric properties of glass-ceramics
  • mechanisms of conduction in glass-ceramics
  • pyroelectric properties
  • applications

Published Papers (3 papers)

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Research

19 pages, 4130 KiB  
Article
Mixed Ionic and Electronic Conduction in TeO2-ZnO-V2O5 Glasses towards Good Dielectric Features
by Imen Mechrgui, Amira Ben Gouider Trabelsi, Fatemah. H. Alkallas, Saber Nasri and Habib Elhouichet
Materials 2022, 15(21), 7659; https://doi.org/10.3390/ma15217659 - 31 Oct 2022
Cited by 5 | Viewed by 1206
Abstract
The melt-quenching technique was used to synthesize tellurite glasses of the chemical composition 80TeO2-(20-x) ZnO-xV2O5. X-ray diffraction (XRD) patterns indicate the amorphous nature of the prepared glasses. Raman and FTIR measurements demonstrate a progressive substitution of the [...] Read more.
The melt-quenching technique was used to synthesize tellurite glasses of the chemical composition 80TeO2-(20-x) ZnO-xV2O5. X-ray diffraction (XRD) patterns indicate the amorphous nature of the prepared glasses. Raman and FTIR measurements demonstrate a progressive substitution of the Te-O-Te linkages by the Te-O-V bridges and the formation of VO4 and VO5 units by a change of the vanadium coordination due to the higher number of oxygens incorporated by further addition of V2O5. The AC conductivity was investigated in the frequency range of 40 Hz to 107 Hz between 473 K to 573 K. A good coherence of the AC conductivity was found using a model correlating the barrier hopping (CPH) and the dominant conduction process changes from ionic to polaronic with the addition of V2O5. The dielectric constant exhibits high values in the range of lower and medium frequencies. Both variations of the electric modulus and the dielectric loss parameters with frequency and temperature showed a relaxation character mainly assigned to the vanadate phases. The electric modulus displays a non-Debye dielectric dispersion and a relaxation process. The present results open the door to future zinc-tellurite glasses-doped vanadium exploitation as a potential electrolyte-based material for solid-state batteries. Full article
(This article belongs to the Special Issue Electrical and Dielectric Properties of Glass-Ceramic Materials and Their Applications)
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19 pages, 7383 KiB  
Article
Investigating the Effect of Tube Diameter on the Performance of a Hybrid Photovoltaic–Thermal System Based on Phase Change Materials and Nanofluids
by Saeed Alqaed, Jawed Mustafa, Fahad Awjah Almehmadi, Mathkar A. Alharthi, Mohsen Sharifpur and Goshtasp Cheraghian
Materials 2022, 15(21), 7613; https://doi.org/10.3390/ma15217613 - 29 Oct 2022
Cited by 1 | Viewed by 1436
Abstract
The finite element (FEM) approach is used in this study to model the laminar flow of an eco-friendly nanofluid (NF) within three pipes in a solar system. A solar panel and a supporting phase change material (PCM) that three pipelines flowed through made [...] Read more.
The finite element (FEM) approach is used in this study to model the laminar flow of an eco-friendly nanofluid (NF) within three pipes in a solar system. A solar panel and a supporting phase change material (PCM) that three pipelines flowed through made up the solar system. An organic, eco-friendly PCM was employed. Several fins were used on the pipes, and the NF temperature and panel temperature were measured at different flow rates. To model the NF flow, a two-phase mixture was used. As a direct consequence of the flow rate being raised by a factor of two, the maximum temperature of the panel dropped by 1.85 °C, and the average temperature dropped by 1.82 °C. As the flow rate increased, the temperature of the output flow dropped by up to 2 °C. At flow rates ranging from low to medium to high, the PCM melted completely in a short amount of time; however, at high flow rates, a portion of the PCM remained non-melted surrounding the pipes. An increase in the NF flow rate had a variable effect on the heat transfer (HTR) coefficient. Full article
(This article belongs to the Special Issue Electrical and Dielectric Properties of Glass-Ceramic Materials and Their Applications)
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13 pages, 2282 KiB  
Article
Pressure-Dependent Structure of BaZrO3 Crystals as Determined by Raman Spectroscopy
by Dong-Hyeon Gim, Yeahan Sur, Yoon Han Lee, Jeong Hyuk Lee, Soonjae Moon, Yoon Seok Oh and Kee Hoon Kim
Materials 2022, 15(12), 4286; https://doi.org/10.3390/ma15124286 - 17 Jun 2022
Cited by 4 | Viewed by 2054
Abstract
The structure of dielectric perovskite BaZrO3, long known to be cubic at room temperature without any structural phase transition with variation in temperature, has been recently disputed to have different ground state structures with lower symmetries involving octahedra rotation. Pressure-dependent Raman [...] Read more.
The structure of dielectric perovskite BaZrO3, long known to be cubic at room temperature without any structural phase transition with variation in temperature, has been recently disputed to have different ground state structures with lower symmetries involving octahedra rotation. Pressure-dependent Raman scattering measurements can identify the hierarchy of energetically-adjacent polymorphs, helping in turn to understand its ground state structure at atmospheric pressure. Here, the Raman scattering spectra of high-quality BaZrO3 single crystals grown by the optical floating zone method are investigated in a pressure range from 1 atm to 42 GPa. First, based on the analyses of the infrared and Raman spectra measured at atmospheric pressure, it was found that all the observed vibrational modes could be assigned according to the cubic Pm3¯m structure. In addition, by applying pressure, two structural phase transitions were found at 8.4 and 19.2 GPa, one from the cubic to the rhombohedral R3¯c phase and the other from the rhombohedral to the tetragonal I4/mcm phase. Based on the two pressure-induced structural phase transitions, the true ground state structure of BaZrO3 at room temperature and ambient pressure was corroborated to be cubic while the rhombohedral phase was the closest second. Full article
(This article belongs to the Special Issue Electrical and Dielectric Properties of Glass-Ceramic Materials and Their Applications)
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