Low-dielectric loss characteristics of Nd(Co1/2Ti 1/2)O3 ceramics at microwave frequencies

Ching Fang Tseng, Cheng-Liang Huang, Cheng Hsing Hsu

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44 Citations (Scopus)

Abstract

The microwave dielectric properties and the microstructures of Nd(Co1/2Ti1/2)O3 (NCT) ceramics using starting powders of Nd2O3, CoO, and TiO2 prepared by the conventional solid-state route have been researched. The dielectric constant values (εr) saturated at 24.8-27. Quality factor (Q × f) values of 37 900-140 000 (at 9 GHz) and the measured τf values ranging from -45 to -48 ppm/°C can be obtained when the sintering temperatures are in the range of 1410°-1500°C. The εr value of 27, the Q × f value of 140 000 (at 9 GHz) and the τf value of -46 ppm/°C were obtained for NCT ceramics sintered at 1440°C for 4 h. For applications of high selective microwave ceramic resonator, filter, and antenna, NCT is proposed as a suitable material candidate.

Original languageEnglish
Pages (from-to)1619-1622
Number of pages4
JournalJournal of the American Ceramic Society
Volume90
Issue number5
DOIs
Publication statusPublished - 2007 May 1

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Materials Chemistry

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