A novel temperature-compensated microwave dielectric (1-x) (Mg0.95Ni0.05)TiO3-xCa0.6 La0.8/3TiO3 ceramics system

Chun Hsu Shen, Cheng-Liang Huang, Chuan-Feng Shih, Chih Ming Huang

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5 Citations (Scopus)

Abstract

The microstructure and microwave dielectric properties of a (1-x)(Mg0.95 Ni0.05)TiO3 -xCa0.6La0.8/3TiO3 ceramics system have been investigated. The system was prepared using a conventional solid-state ceramic route. In order to produce a temperature-stable material, Ca0.6La0.8/3TiO3 was added for a near-zero temperature coefficient (τf). With partial replacement of Mg2+ by Ni2+, the dielectric properties of the (1-x) (Mg0.95Ni0.05) TiO3-xCa0.6La0.8/3TiO3 ceramics can be promoted. The microwave dielectric properties are strongly correlated with the sintering temperature and the composition. An excellent Q × f value of 118,000 GHz can be obtained for the system with x = 0.9 at 1325°C. For practical application, a dielectric constant (εr) of 24.61, a Q × f value of 102,000 GHz, and a temperature coefficient of resonant frequency (τf) of -3.6 ppm/°C for 0.85(Mg0.95 Ni0.05)TiO3-0.15Ca0.6La0.8/3 TiO3 at 1325°C are proposed. A parallel-coupled line band-pass filter is designed and simulated using the proposed dielectric to study its performance.

Original languageEnglish
Pages (from-to)562-570
Number of pages9
JournalInternational Journal of Applied Ceramic Technology
Volume6
Issue number5
DOIs
Publication statusPublished - 2009 Sep 14

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Microwaves
Dielectric properties
ceramics
dielectric properties
microwaves
Temperature
temperature
coefficients
Bandpass filters
bandpass filters
resonant frequencies
Natural frequencies
sintering
Permittivity
Sintering
routes
permittivity
solid state
microstructure
Microstructure

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Condensed Matter Physics
  • Marketing
  • Materials Chemistry

Cite this

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title = "A novel temperature-compensated microwave dielectric (1-x) (Mg0.95Ni0.05)TiO3-xCa0.6 La0.8/3TiO3 ceramics system",
abstract = "The microstructure and microwave dielectric properties of a (1-x)(Mg0.95 Ni0.05)TiO3 -xCa0.6La0.8/3TiO3 ceramics system have been investigated. The system was prepared using a conventional solid-state ceramic route. In order to produce a temperature-stable material, Ca0.6La0.8/3TiO3 was added for a near-zero temperature coefficient (τf). With partial replacement of Mg2+ by Ni2+, the dielectric properties of the (1-x) (Mg0.95Ni0.05) TiO3-xCa0.6La0.8/3TiO3 ceramics can be promoted. The microwave dielectric properties are strongly correlated with the sintering temperature and the composition. An excellent Q × f value of 118,000 GHz can be obtained for the system with x = 0.9 at 1325°C. For practical application, a dielectric constant (εr) of 24.61, a Q × f value of 102,000 GHz, and a temperature coefficient of resonant frequency (τf) of -3.6 ppm/°C for 0.85(Mg0.95 Ni0.05)TiO3-0.15Ca0.6La0.8/3 TiO3 at 1325°C are proposed. A parallel-coupled line band-pass filter is designed and simulated using the proposed dielectric to study its performance.",
author = "Shen, {Chun Hsu} and Cheng-Liang Huang and Chuan-Feng Shih and Huang, {Chih Ming}",
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AU - Shen, Chun Hsu

AU - Huang, Cheng-Liang

AU - Shih, Chuan-Feng

AU - Huang, Chih Ming

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N2 - The microstructure and microwave dielectric properties of a (1-x)(Mg0.95 Ni0.05)TiO3 -xCa0.6La0.8/3TiO3 ceramics system have been investigated. The system was prepared using a conventional solid-state ceramic route. In order to produce a temperature-stable material, Ca0.6La0.8/3TiO3 was added for a near-zero temperature coefficient (τf). With partial replacement of Mg2+ by Ni2+, the dielectric properties of the (1-x) (Mg0.95Ni0.05) TiO3-xCa0.6La0.8/3TiO3 ceramics can be promoted. The microwave dielectric properties are strongly correlated with the sintering temperature and the composition. An excellent Q × f value of 118,000 GHz can be obtained for the system with x = 0.9 at 1325°C. For practical application, a dielectric constant (εr) of 24.61, a Q × f value of 102,000 GHz, and a temperature coefficient of resonant frequency (τf) of -3.6 ppm/°C for 0.85(Mg0.95 Ni0.05)TiO3-0.15Ca0.6La0.8/3 TiO3 at 1325°C are proposed. A parallel-coupled line band-pass filter is designed and simulated using the proposed dielectric to study its performance.

AB - The microstructure and microwave dielectric properties of a (1-x)(Mg0.95 Ni0.05)TiO3 -xCa0.6La0.8/3TiO3 ceramics system have been investigated. The system was prepared using a conventional solid-state ceramic route. In order to produce a temperature-stable material, Ca0.6La0.8/3TiO3 was added for a near-zero temperature coefficient (τf). With partial replacement of Mg2+ by Ni2+, the dielectric properties of the (1-x) (Mg0.95Ni0.05) TiO3-xCa0.6La0.8/3TiO3 ceramics can be promoted. The microwave dielectric properties are strongly correlated with the sintering temperature and the composition. An excellent Q × f value of 118,000 GHz can be obtained for the system with x = 0.9 at 1325°C. For practical application, a dielectric constant (εr) of 24.61, a Q × f value of 102,000 GHz, and a temperature coefficient of resonant frequency (τf) of -3.6 ppm/°C for 0.85(Mg0.95 Ni0.05)TiO3-0.15Ca0.6La0.8/3 TiO3 at 1325°C are proposed. A parallel-coupled line band-pass filter is designed and simulated using the proposed dielectric to study its performance.

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