New dielectric material system of Nd(Mg1/2Ti1/2) O3-CaTiO3 at microwave frequency

Cheng Liang Huang, Yuan Bin Chen, Shih Hung Lin

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11 Citations (Scopus)


The microwave dielectric properties of (1 - x)CaTiO3-xNd(Mg 1/2Ti1/2)O3 (0.1 ≤ x ≤ 1.0) ceramics prepared by the conventional solid state method have been investigated. The system forms a solid solution throughout the entire compositional range. The dielectric constant decreases from 152 to 27 as x varies from 0.1 to 1.0. In the (1 - x)CaTiO3-xNd(Mg1/2Ti1/2)O3 system, the microwave dielectric properties can be effectively controlled by varying the x value. At 1400 °C, 0.1CaTiO3-0.9Nd(Mg 1/2Ti1/2)O3 has a dielectric constant (εr) of 42, a Q × f value of 35 000 GHz and a temperature coefficient of resonant frequency (τf) of -10 ppm/°C. As the content of Nd(Mg1/2Ti1/2)O3 increases, the highest Q × f value of 43 000 GHz for x = 0.9 is achieved at the sintering temperature 1500 °C.

Original languageEnglish
Pages (from-to)1921-1924
Number of pages4
JournalSolid-State Electronics
Issue number12
Publication statusPublished - 2005 Dec

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering
  • Materials Chemistry


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