<?xml version="1.0" encoding="utf-8"?>
<export-example>
  <doc>
    <id>38603</id>
    <completedYear/>
    <publishedYear>2016</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>100</pageFirst>
    <pageLast>109</pageLast>
    <pageNumber/>
    <edition/>
    <issue>1-4</issue>
    <volume>37</volume>
    <type>article</type>
    <publisherName>Springer Science+Business Media</publisherName>
    <publisherPlace>New York</publisherPlace>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Effect of oxygen partial pressure on co-firing behavior and magnetic properties of LTCC modules with integrated NiCuZn ferrite layers</title>
    <abstract language="eng">Low-κ dielectric LTCC was developed, to realize successful co-firing with NiCuZn ferrite tapes. A critical high-temperature process in the production of highly integrated LTCC modules is the migration of silver from inner conductors into the LTCC glass phase. Intensive silver migration causes strong deformation of LTCC multilayers during firing in air.&#13;
Silver migration into the LTCC glass phase depends on oxygen content of the sintering atmosphere and can be minimized by sintering in nitrogen atmosphere. However, partial decomposition of NiCuZn-ferrite and formation of cuprite was observed during sintering in nitrogen and, consequently, the permeability of the ferrite decreases. As shown by a combined XRD/thermogravimetric study the co-firing of LTCC modules with silver metallization and integrated ferrite layer demands precise adjustment of oxygen partial pressure.</abstract>
    <parentTitle language="eng">Journal of Electroceramics</parentTitle>
    <identifier type="doi">10.1007/s10832-016-0043-0</identifier>
    <identifier type="issn">1385-3449</identifier>
    <identifier type="issn">1573-8663</identifier>
    <enrichment key="date_peer_review">13.01.2017</enrichment>
    <author>H. Naghib-zadeh</author>
    <author>Gabriele Oder</author>
    <author>J. Hesse</author>
    <author>T. Reimann</author>
    <author>J. Töpfer</author>
    <author>Torsten Rabe</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Ferrite</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Silver diffusion</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Co-firing</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>LTCC</value>
    </subject>
    <collection role="ddc" number="620">Ingenieurwissenschaften und zugeordnete Tätigkeiten</collection>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
  </doc>
  <doc>
    <id>36001</id>
    <completedYear/>
    <publishedYear>2016</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>1931</pageFirst>
    <pageLast>1937</pageLast>
    <pageNumber/>
    <edition/>
    <issue>8</issue>
    <volume>36</volume>
    <type>article</type>
    <publisherName>Elsevier Ltd.</publisherName>
    <publisherPlace>Oxford, UK</publisherPlace>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Integration of additive-free Ni–Cu–Zn ferrite layers into LTCC multilayer modules</title>
    <abstract language="eng">The sintering behavior of sub-micron Ni0.30Cu0.20Zn0.52Fe1.98O3.99 ferrite with and without Bi2O3 addition was studied. Ferrites with 0.5 wt% Bi2O3 exhibit enhanced shrinkage at T &lt; 900 °C with significant grain growth. Additive-free ferrite powders also sinter to high density at 900 °C, however, grain growth is very limited. Both ferrites exhibit a permeability of µ = 400–450. Multilayers consisting of ferrite and low-k dielectric LTCC layers were prepared by co-firing at 900–915 °C. The shrinkage and thermal expansion characteristics of ferrite and LTCC tapes are similar. However, the permeability of integrated ferrite layers, made from ferrite tapes with Bi2O3 additive, significantly drops after co-firing with LTCC layers compared to separately fired monolithic ferrite multilayers. Contrarily, the permeability of integrated, Bi2O3-free ferrite layers, co-fired with dielectric tapes, is identical to that of monolithic ferrite multilayers. This finding is an important step toward ferrite integration into complex LTCC multilayer architectures.</abstract>
    <parentTitle language="eng">Journal of the European Ceramic Society</parentTitle>
    <identifier type="doi">10.1016/j.jeurceramsoc.2016.02.016</identifier>
    <identifier type="issn">0955-2219</identifier>
    <enrichment key="date_peer_review">17.05.2016</enrichment>
    <author>J. Hesse</author>
    <author>H. Naghib-zadeh</author>
    <author>Torsten Rabe</author>
    <author>J. Töpfer</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>LTCC</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Ferrite integration</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Multilayer</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Sintering</value>
    </subject>
    <collection role="ddc" number="620">Ingenieurwissenschaften und zugeordnete Tätigkeiten</collection>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
  </doc>
</export-example>
