Microwave dielectric properties of (1 - x)(Mg0.95Zn0.05)TiO3-x(Na0.5La0.5)TiO3 ceramic system

Cheng-Liang Huang, Gung Jie Li, Jun Jie Wang

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

The microstructures and the microwave dielectric properties of the (1 - x)(Mg0.95Zn0.05)TiO3-x(Na0.5La0.5)TiO3 ceramic system were investigated. In order to achieve a temperature-stable material, combining a positive temperature coefficient material with a negative one was applied in this study. (Na0.5La0.5)TiO3, having a large positive τf value, was added to (Mg0.95Zn0.05)TiO3 to compensate its τf. By appropriately adjusting the x value in the ceramic system, zero τf value can be achieved. The microwave dielectric properties are strongly related to the density, the matrix and the second phase of the specimen. A new microwave dielectric material, 0.88(Mg0.95Zn0.05)TiO3-0.12(Na0.5La0.5)TiO3 possessing an εr of 23.39, a Q × f of 103,000 GHz (at 9 GHz) and a τf of 1.1 ppm/°C that is applicable in GPS patch antennas and 3 G passive components, is suggested.

Original languageEnglish
Pages (from-to)497-501
Number of pages5
JournalJournal of Alloys and Compounds
Volume472
Issue number1-2
DOIs
Publication statusPublished - 2009 Mar 20

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Dielectric properties
Microwaves
Positive temperature coefficient
Microstrip antennas
Global positioning system
Microstructure
Temperature

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

Cite this

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abstract = "The microstructures and the microwave dielectric properties of the (1 - x)(Mg0.95Zn0.05)TiO3-x(Na0.5La0.5)TiO3 ceramic system were investigated. In order to achieve a temperature-stable material, combining a positive temperature coefficient material with a negative one was applied in this study. (Na0.5La0.5)TiO3, having a large positive τf value, was added to (Mg0.95Zn0.05)TiO3 to compensate its τf. By appropriately adjusting the x value in the ceramic system, zero τf value can be achieved. The microwave dielectric properties are strongly related to the density, the matrix and the second phase of the specimen. A new microwave dielectric material, 0.88(Mg0.95Zn0.05)TiO3-0.12(Na0.5La0.5)TiO3 possessing an εr of 23.39, a Q × f of 103,000 GHz (at 9 GHz) and a τf of 1.1 ppm/°C that is applicable in GPS patch antennas and 3 G passive components, is suggested.",
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Microwave dielectric properties of (1 - x)(Mg0.95Zn0.05)TiO3-x(Na0.5La0.5)TiO3 ceramic system. / Huang, Cheng-Liang; Li, Gung Jie; Wang, Jun Jie.

In: Journal of Alloys and Compounds, Vol. 472, No. 1-2, 20.03.2009, p. 497-501.

Research output: Contribution to journalArticle

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AB - The microstructures and the microwave dielectric properties of the (1 - x)(Mg0.95Zn0.05)TiO3-x(Na0.5La0.5)TiO3 ceramic system were investigated. In order to achieve a temperature-stable material, combining a positive temperature coefficient material with a negative one was applied in this study. (Na0.5La0.5)TiO3, having a large positive τf value, was added to (Mg0.95Zn0.05)TiO3 to compensate its τf. By appropriately adjusting the x value in the ceramic system, zero τf value can be achieved. The microwave dielectric properties are strongly related to the density, the matrix and the second phase of the specimen. A new microwave dielectric material, 0.88(Mg0.95Zn0.05)TiO3-0.12(Na0.5La0.5)TiO3 possessing an εr of 23.39, a Q × f of 103,000 GHz (at 9 GHz) and a τf of 1.1 ppm/°C that is applicable in GPS patch antennas and 3 G passive components, is suggested.

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