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Advanced Dielectric Ceramics (2nd Edition)
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Advanced Dielectric Ceramics (2nd Edition)

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 (30 July 2024) | Viewed by 2333

Special Issue Editors

Prof. Dr. Ru-Yuan Yang

E-Mail Website
Guest Editor
Graduate Institute of Materials Engineering, National Pingtung University of Science and Technology, Pingtung 91201, Taiwan
Interests: microwave ceramics; dielectric properties; phosphor; transparent conductive ceramics
Special Issues, Collections and Topics in MDPI journals
Dr. Yen-Yu Chen

E-Mail Website
Guest Editor
Assistant Professor, Department of Materials Engineering, National Pingtung University of Science and Technology, Pingtung 91201, Taiwan
Interests: thin film technology; advanced ceramics; semiconductor manufacturing; fuel cells

Special Issue Information

Dear Colleagues,

Advanced dielectric ceramics are known as high-performance ceramics, fine ceramics, high-tech ceramics, etc., through the use of high-purity, ultra-fine, synthetic, or selected inorganic compounds as raw materials. Advanced dielectric ceramics have excellent characteristics in relation to mechanics, sound, light, heat, electricity, and biology. Advanced ceramics are different from traditional ceramics in terms of raw materials and technology. Their specific fine structure enables them to have a series of advantages, such as high strength, high hardness, wear resistance, corrosion resistance, high temperature resistance, insulation, superconductivity, biocompatibility, etc. As such, they are widely used in national defense, the chemical industry, metallurgy, electronics, machinery, aviation, aerospace, biomedicine, etc. In the future, we expect the development of advanced ceramics to be promoted through the implementation of combined synthesis methods and new processing technologies.

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

Prof. Dr. Ru-Yuan Yang
Dr. Yen-Yu Chen
Guest Editors

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

  • low-temperature cofired ceramics
  • piezoelectric ceramics
  • magnetic ceramics
  • superconducting ceramics
  • glass ceramics
  • electronic insulation ceramics
  • dielectric ceramics
  • microwave ceramics

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Published Papers (2 papers)

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14 pages, 2819 KiB  
Article
New Piezoceramic SrBi2Nb2-2xWxSnxO9: Crystal Structure, Microstructure and Dielectric Properties
by Sergei V. Zubkov, Ivan A. Parinov and Alexander V. Nazarenko
Materials 2024, 17(18), 4455; https://doi.org/10.3390/ma17184455 - 11 Sep 2024
Viewed by 448
Abstract
By using the method of high-temperature solid-phase reaction, the new piezoceramic SrBi2Nb2-2xWxSnxO9 was obtained, where partial substitution of niobium (Nb) atoms with Sn4+ and W6+ atoms in the compound SrBi2 [...] Read more.
By using the method of high-temperature solid-phase reaction, the new piezoceramic SrBi2Nb2-2xWxSnxO9 was obtained, where partial substitution of niobium (Nb) atoms with Sn4+ and W6+ atoms in the compound SrBi2Nb2O9 occurred in the octahedra of the perovskite layer (B-position). X-ray diffraction investigations showed that these compounds are single-phase SrBi2Nb2-2xWxSnxO9 (x = 0.1, 0.2) and two-phase SrBi2Nb2-2xWxSnxO9 (x = 0.3, 0.4), but all of them had the structure of Aurivillius-Smolensky phases (ASPs) with close parameters of orthorhombic unit cells. It corresponded to the space group A21am. The temperature dependences of the relative permittivity ε/ε0 and the tangent of the dielectric loss angle tan d were defined at various frequencies. It was found that doping SrBi2Nb2-2xWxSnxO9 (x = 0.1) improved the electrophysical properties of the compound: losses decreased, and the relative permittivity increased. This result was obtained for the first time. Moreover, a new result was obtained that indicated an improvement in the electrophysical properties of SrBi2Nb2O9 using the chemical element Sn (tin). This refutes the previously existing opinion about the impossibility to use Sn as a doping element. Full article
(This article belongs to the Special Issue Advanced Dielectric Ceramics (2nd Edition))
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13 pages, 5459 KiB  
Article
Preparation of Sol–Gel-Derived CaO-B2O3-SiO2 Glass/Al2O3 Composites with High Flexural Strength and Low Dielectric Constant for LTCC Application
by Yiqun Ni, Shanshan Li, Bo Hou, Weizhuang Zhuo and Weijia Wen
Materials 2024, 17(2), 511; https://doi.org/10.3390/ma17020511 - 21 Jan 2024
Viewed by 1528
Abstract
Low-temperature co-fired ceramic (LTCC) substrate materials are widely applied in electronic components due to their excellent microwave dielectric properties. However, the absence of LTCC materials with a lower dielectric constant and higher mechanical strength restricts the creation of integrated and minified electronic devices. [...] Read more.
Low-temperature co-fired ceramic (LTCC) substrate materials are widely applied in electronic components due to their excellent microwave dielectric properties. However, the absence of LTCC materials with a lower dielectric constant and higher mechanical strength restricts the creation of integrated and minified electronic devices. In this work, sol–gel-derived CaO-B2O3-SiO2 (CBS) glass/Al2O3 composites with high flexural strength and low dielectric constant were successfully prepared using the LTCC technique. Among the composites sintered at different temperatures, the composites sintered at 870 °C for 2 hours possess a dielectric constant of 6.3 (10 GHz), a dielectric loss of 0.2%, a flexural strength of 245 MPa, and a CTE of 5.3 × 10−6 K−1, demonstrating its great potential for applications in the electronic package field. By analyzing the CBS glass’ physical characteristics, it was found that the sol–gel-derived glass has an extremely low dielectric constant of 3.6 and does not crystallize or react with Al2O3 at the sintering temperature, which is conducive to improving the flexural strength and reducing the dielectric constant of CBS glass/Al2O3 composites. Full article
(This article belongs to the Special Issue Advanced Dielectric Ceramics (2nd Edition))
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