Dielectric properties of high-Q (Mg 1-xZn x) 1.8Ti 1.1O 4 ceramics at microwave frequency

Cheng Liang Huang, Yu Wei Tseng, Jhih Yong Chen, Yuan Cheng Kuo

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18 Citations (Scopus)


(Mg 1-xZn x) 1.8Ti 1.1O 4 (x=0.03-1.00) ceramics were prepared via the conventional solid-state method and their dielectric properties were investigated in the microwave frequency region. Formation of solid solutions was confirmed by the X-ray diffraction analysis, the EDX analysis, and the measured lattice parameters. A small amount of Zn substitution for Mg produced a large increase in Q×f due to a high packing fraction as well as a high relative density of the ceramics. By increasing x from 0.00 to 0.06, the Q×f of the specimen could be tremendously improved from 141,000 to a maximum of 210,700GHz (at 10.52GHz), demonstrating an unique potential for low-loss microwave applications. The τ f values were found to retain in the range from -54.2 to -62.3ppm/°C for all compositions because the resultant change of unit cell volume was small. Also, a remarkable lowering of the sintering temperature down to ~300°C was observed when Mg was totally substituted by Zn, thereby making it possible for low firing applications.

Original languageEnglish
Pages (from-to)2365-2371
Number of pages7
JournalJournal of the European Ceramic Society
Issue number10
Publication statusPublished - 2012 Aug

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Materials Chemistry


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