Liquid phase sintering of MgTiO3-CaTiO3 microwave dielectric ceramics

Cheng Liang Huang, Chung Long Pan, Shen Jiunn Shium

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95 Citations (Scopus)


The effects of CuO additive on the microstructures, the phase formation and the microwave dielectric properties of MgTiO3-CaTiO3 ceramics were investigated. The sintering temperature of CuO-doped 0.95MgTiO3-0.05CaTiO3 (95MCT) ceramics can be lowered to 1275°C due to the liquid phase effect. The microwave dielectric properties are found strongly correlate with the sintering temperature as well as the amount of CuO addition. At 1275°C, 0.95MgTiO3-0.05CaTiO3 ceramics with 0.25wt.% CuO addition possesses a dielectric constant εr of 20, a Q × f value of 51000 (at 7 GHz) and a τf value of -8.3 ppm°C-1. By appropriately adjusting the x value in the (1 - x)MgTiO3-xCaTiO3 ceramic system, zero τf value can be obtained.

Original languageEnglish
Pages (from-to)111-115
Number of pages5
JournalMaterials Chemistry and Physics
Issue number1
Publication statusPublished - 2003 Feb 3

All Science Journal Classification (ASJC) codes

  • General Materials Science
  • Condensed Matter Physics


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