Effect of Li2CO3 addition on the sintering temperature and microwave dielectric properties of Mg2V 2O7 ceramics

Mi Ri Joung, Jin Seong Kim, Myung Eun Song, Jae Hong Choi, Jong Woo Sun, Sahn Nahm, Jong Hoo Paik, Byung Hyun Choi

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Li2CO3 was added to Mg2V2O 7 ceramics in order to reduce the sintering temperature to below 900°C. At temperatures below 900°C, a liquid phase was formed during sintering, which assisted the densification of the specimens. The addition of Li2CO3 changed the crystal structure of Mg 2V2O7 ceramics from triclinic to monoclinic. The 6.0 mol% Li2CO3-added Mg2V 2O7 ceramic was well sintered at 800°C with a high density and good microwave dielectric properties of εr=8.2, Q × f=70 621 GHz, and τf=-35.2 ppm/°C. Silver did not react with the 6.0 mol% Li2CO3-added Mg2V 2O7 ceramic at 800°C. Therefore, this ceramic is a good candidate material in low-temperature co-fired ceramic multilayer devices.

Original languageEnglish
Pages (from-to)2151-2154
Number of pages4
JournalJournal of the American Ceramic Society
Issue number9
Publication statusPublished - 2009 Sep 1


ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

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