<?xml version="1.0" encoding="utf-8"?>
<export-example>
  <doc>
    <id>2710</id>
    <completedYear>2020</completedYear>
    <publishedYear>2020</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue>24</issue>
    <volume>13</volume>
    <type>article</type>
    <publisherName>MDPI</publisherName>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>2021-10-08</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Barium-Strontium Titanate/Porous Glass Structures for Microwave Applications</title>
    <parentTitle language="eng">Materials</parentTitle>
    <identifier type="doi">10.3390/ma13245639</identifier>
    <enrichment key="opus.source">publish</enrichment>
    <licence>Creative Commons - CC BY - Namensnennung 4.0</licence>
    <author>Andrey Tumarkin</author>
    <author>Natalya Tyurnina</author>
    <author>Zoya Tyurnina</author>
    <author>Nikolay Mukhin</author>
    <author>Olga Sinelshchikova</author>
    <author>Alexander Gagarin</author>
    <author>Sergey Sviridov</author>
    <author>Andrey Drozdovsky</author>
    <author>Eugeny Sapego</author>
    <author>Ivan Mylnikov</author>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>glass-ceramic structures</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>filling of porous material</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>microwave</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>barium-strontium titanate</value>
    </subject>
    <collection role="ddc" number="620">Ingenieurwissenschaften und zugeordnete Tätigkeiten</collection>
    <collection role="open_access" number="">open_access</collection>
    <collection role="institutes" number="">Fachbereich Technik</collection>
    <collection role="Hochschulbibliografie" number="1">Hochschulbibliografie</collection>
    <thesisPublisher>Technische Hochschule Brandenburg</thesisPublisher>
  </doc>
  <doc>
    <id>2957</id>
    <completedYear>2022</completedYear>
    <publishedYear/>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>1</pageFirst>
    <pageLast>10</pageLast>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume>281</volume>
    <type>article</type>
    <publisherName>Elsevier</publisherName>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>2023-10-11</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Glass-ceramic ferroelectric composite material BaTiO3/KFeSi for microwave applications</title>
    <abstract language="eng">Glass-ceramic composites consisting of potassium-iron-silicate glass and barium titanate mixed in various proportions were successfully synthesized by low-temperature sintering. The crystal structure of the obtained composite samples, the porosity and the microhardness were studied by the X-ray diffraction, the electron microscopy, the weight method, and the Vickers method. Electrical characteristics (dielectric permittivity, tunability and losses) of as-prepared and annealed in oxygen medium samples were investigated at microwaves. According to structural analysis, the synthesized samples are a mixture of KFeSi glass, ferroelectric BaTiO3, and dielectric barium polytitanates; the ratio of the latter determines the electrical properties of the composites. Depending on the content of barium titanate, the studied composite samples show a permittivity from 50 to 270 with a dielectric loss level of 0,1–0,02 in frequency range from 3 to 10 GHz. Annealing of composite samples in an oxygen-containing environment leads to an increase in their dielectric permittivity and tunability by 10–25% and a twofold decrease in dielectric loss.</abstract>
    <parentTitle language="eng">Composite Structures</parentTitle>
    <identifier type="std-doi">https://doi.org/10.1016/j.compstruct.2021.114992</identifier>
    <identifier type="url">https://linkinghub.elsevier.com/retrieve/pii/S0263822321014161</identifier>
    <identifier type="issn">0263-8223</identifier>
    <enrichment key="opus.source">publish</enrichment>
    <licence>Creative Commons - CC BY - Namensnennung 4.0</licence>
    <author>Andrey Tumarkin</author>
    <author>Natalya Tyurnina</author>
    <author>Nikolay Mukhin</author>
    <author>Zoya Tyurnina</author>
    <author>Olga Sinelshchikova</author>
    <author>Alexander Gagarin</author>
    <author>Eugeny Sapego</author>
    <author>Yriy Kretser</author>
    <collection role="open_access" number="">open_access</collection>
    <collection role="institutes" number="">Fachbereich Technik</collection>
    <collection role="Hochschulbibliografie" number="1">Hochschulbibliografie</collection>
    <thesisPublisher>Technische Hochschule Brandenburg</thesisPublisher>
  </doc>
</export-example>
