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Barium-Strontium Titanate/Porous Glass Structures for Microwave Applications

Based on porous silicate glasses obtained by ion exchange, glass-ceramic materials containing a solid solution of barium-strontium titanate with a dielectric constant of more than 100 at microwaves, were synthesized for the first time. Glass-ceramic structures were studied using X-ray diffraction, s...

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Autores principales: Tumarkin, Andrey, Tyurnina, Natalya, Tyurnina, Zoya, Mukhin, Nikolay, Sinelshchikova, Olga, Gagarin, Alexander, Sviridov, Sergey, Drozdovsky, Andrey, Sapego, Eugeny, Mylnikov, Ivan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7763980/
https://www.ncbi.nlm.nih.gov/pubmed/33321860
http://dx.doi.org/10.3390/ma13245639
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author Tumarkin, Andrey
Tyurnina, Natalya
Tyurnina, Zoya
Mukhin, Nikolay
Sinelshchikova, Olga
Gagarin, Alexander
Sviridov, Sergey
Drozdovsky, Andrey
Sapego, Eugeny
Mylnikov, Ivan
author_facet Tumarkin, Andrey
Tyurnina, Natalya
Tyurnina, Zoya
Mukhin, Nikolay
Sinelshchikova, Olga
Gagarin, Alexander
Sviridov, Sergey
Drozdovsky, Andrey
Sapego, Eugeny
Mylnikov, Ivan
author_sort Tumarkin, Andrey
collection PubMed
description Based on porous silicate glasses obtained by ion exchange, glass-ceramic materials containing a solid solution of barium-strontium titanate with a dielectric constant of more than 100 at microwaves, were synthesized for the first time. Glass-ceramic structures were studied using X-ray diffraction, secondary electron microscopy, Mössbauer spectroscopy and porometry methods. Electrical characteristics such as permittivity and losses of as-prepared and annealed in oxygen medium samples were also investigated at microwaves. It was shown that the method of obtaining porous glasses, due to ion exchange between KFeSi glass and LiNO(3) and NaNO(3) melts, allows for controlling a wide range of pore sizes and makes it possible to form glass porous structures with pores of the required size. The efficiency of the process of filling a porous matrix with a ferroelectric filler was investigated and the average depth of its penetration was estimated. It was shown that annealing glass-ceramic structures in an oxygen environment had a positive effect on their structural and electrical characteristics. Glass-ceramic structures demonstrate a significant increase in permittivity and a decrease in losses after high-temperature treatment in oxygen.
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spelling pubmed-77639802020-12-27 Barium-Strontium Titanate/Porous Glass Structures for Microwave Applications Tumarkin, Andrey Tyurnina, Natalya Tyurnina, Zoya Mukhin, Nikolay Sinelshchikova, Olga Gagarin, Alexander Sviridov, Sergey Drozdovsky, Andrey Sapego, Eugeny Mylnikov, Ivan Materials (Basel) Article Based on porous silicate glasses obtained by ion exchange, glass-ceramic materials containing a solid solution of barium-strontium titanate with a dielectric constant of more than 100 at microwaves, were synthesized for the first time. Glass-ceramic structures were studied using X-ray diffraction, secondary electron microscopy, Mössbauer spectroscopy and porometry methods. Electrical characteristics such as permittivity and losses of as-prepared and annealed in oxygen medium samples were also investigated at microwaves. It was shown that the method of obtaining porous glasses, due to ion exchange between KFeSi glass and LiNO(3) and NaNO(3) melts, allows for controlling a wide range of pore sizes and makes it possible to form glass porous structures with pores of the required size. The efficiency of the process of filling a porous matrix with a ferroelectric filler was investigated and the average depth of its penetration was estimated. It was shown that annealing glass-ceramic structures in an oxygen environment had a positive effect on their structural and electrical characteristics. Glass-ceramic structures demonstrate a significant increase in permittivity and a decrease in losses after high-temperature treatment in oxygen. MDPI 2020-12-10 /pmc/articles/PMC7763980/ /pubmed/33321860 http://dx.doi.org/10.3390/ma13245639 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Tumarkin, Andrey
Tyurnina, Natalya
Tyurnina, Zoya
Mukhin, Nikolay
Sinelshchikova, Olga
Gagarin, Alexander
Sviridov, Sergey
Drozdovsky, Andrey
Sapego, Eugeny
Mylnikov, Ivan
Barium-Strontium Titanate/Porous Glass Structures for Microwave Applications
title Barium-Strontium Titanate/Porous Glass Structures for Microwave Applications
title_full Barium-Strontium Titanate/Porous Glass Structures for Microwave Applications
title_fullStr Barium-Strontium Titanate/Porous Glass Structures for Microwave Applications
title_full_unstemmed Barium-Strontium Titanate/Porous Glass Structures for Microwave Applications
title_short Barium-Strontium Titanate/Porous Glass Structures for Microwave Applications
title_sort barium-strontium titanate/porous glass structures for microwave applications
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7763980/
https://www.ncbi.nlm.nih.gov/pubmed/33321860
http://dx.doi.org/10.3390/ma13245639
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