Microwave dielectric properties of x(Mg0.7Zn0.3) 0.95Co0.05TiO3-(1 - X)Ca0.8Sr 0.2TiO3 ceramics with a zero temperature coefficient of resonant frequency

Cheng-Liang Huang, Shih Hung Lin, Shih Sheng Liu, Yuan Bin Chen, Sih Yin Wang

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

The microwave dielectric properties and microstructures of x(Mg 0.7Zn0.3)0.95Co0.05TiO 3-(1 - x)C0.8Sr0.2TiO3 ceramics prepared using a mixed oxide route were investigated. (Mg0.7Zn 0.3)0.95Co0.05TiO3 has a dielectric constant (εr)of ∼20, a high-quality factor (Q×f)of ∼163,560 GHz, and a temperature coefficient of resonant frequency (t f)of ∼-65 ppm/°C. To produce a temperature-stable material, Ca0.8Sr0.2TiO3, which has a large positive tf value of 990ppm/°C, was added to (Mg0.7Zn 0.3)0.95Co0.05TiO3. The temperature coefficient of resonant frequency increased with increasing Ca 0.8Sr0.2TiO3 content, going through zero at x = 0.95. The microwave dielectric material 0.95(Mg0.7Zn 0.3)0.95Co0.05TiO3-0D5Ca 0.8Sr0.2TiO3 has an excellent combination of microwave dielectric properties: εr ∼22.5, Q×f×90,000 (at 9GHz), and tf ~0.1 ppm/°C sinter at 1150°C. It is proposed as a candidate material for ISM band components and GPS antennas.

Original languageEnglish
Pages (from-to)392-396
Number of pages5
JournalJournal of Alloys and Compounds
Volume503
Issue number2
DOIs
Publication statusPublished - 2010 Jul 23

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Dielectric properties
Natural frequencies
Microwaves
Temperature
Oxides
Global positioning system
Permittivity
Antennas
Microstructure

All Science Journal Classification (ASJC) codes

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

Cite this

@article{73d3ad741569437eaf77e385761b03cc,
title = "Microwave dielectric properties of x(Mg0.7Zn0.3) 0.95Co0.05TiO3-(1 - X)Ca0.8Sr 0.2TiO3 ceramics with a zero temperature coefficient of resonant frequency",
abstract = "The microwave dielectric properties and microstructures of x(Mg 0.7Zn0.3)0.95Co0.05TiO 3-(1 - x)C0.8Sr0.2TiO3 ceramics prepared using a mixed oxide route were investigated. (Mg0.7Zn 0.3)0.95Co0.05TiO3 has a dielectric constant (εr)of ∼20, a high-quality factor (Q×f)of ∼163,560 GHz, and a temperature coefficient of resonant frequency (t f)of ∼-65 ppm/°C. To produce a temperature-stable material, Ca0.8Sr0.2TiO3, which has a large positive tf value of 990ppm/°C, was added to (Mg0.7Zn 0.3)0.95Co0.05TiO3. The temperature coefficient of resonant frequency increased with increasing Ca 0.8Sr0.2TiO3 content, going through zero at x = 0.95. The microwave dielectric material 0.95(Mg0.7Zn 0.3)0.95Co0.05TiO3-0D5Ca 0.8Sr0.2TiO3 has an excellent combination of microwave dielectric properties: εr ∼22.5, Q×f×90,000 (at 9GHz), and tf ~0.1 ppm/°C sinter at 1150°C. It is proposed as a candidate material for ISM band components and GPS antennas.",
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Microwave dielectric properties of x(Mg0.7Zn0.3) 0.95Co0.05TiO3-(1 - X)Ca0.8Sr 0.2TiO3 ceramics with a zero temperature coefficient of resonant frequency. / Huang, Cheng-Liang; Lin, Shih Hung; Liu, Shih Sheng; Chen, Yuan Bin; Wang, Sih Yin.

In: Journal of Alloys and Compounds, Vol. 503, No. 2, 23.07.2010, p. 392-396.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Microwave dielectric properties of x(Mg0.7Zn0.3) 0.95Co0.05TiO3-(1 - X)Ca0.8Sr 0.2TiO3 ceramics with a zero temperature coefficient of resonant frequency

AU - Huang, Cheng-Liang

AU - Lin, Shih Hung

AU - Liu, Shih Sheng

AU - Chen, Yuan Bin

AU - Wang, Sih Yin

PY - 2010/7/23

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N2 - The microwave dielectric properties and microstructures of x(Mg 0.7Zn0.3)0.95Co0.05TiO 3-(1 - x)C0.8Sr0.2TiO3 ceramics prepared using a mixed oxide route were investigated. (Mg0.7Zn 0.3)0.95Co0.05TiO3 has a dielectric constant (εr)of ∼20, a high-quality factor (Q×f)of ∼163,560 GHz, and a temperature coefficient of resonant frequency (t f)of ∼-65 ppm/°C. To produce a temperature-stable material, Ca0.8Sr0.2TiO3, which has a large positive tf value of 990ppm/°C, was added to (Mg0.7Zn 0.3)0.95Co0.05TiO3. The temperature coefficient of resonant frequency increased with increasing Ca 0.8Sr0.2TiO3 content, going through zero at x = 0.95. The microwave dielectric material 0.95(Mg0.7Zn 0.3)0.95Co0.05TiO3-0D5Ca 0.8Sr0.2TiO3 has an excellent combination of microwave dielectric properties: εr ∼22.5, Q×f×90,000 (at 9GHz), and tf ~0.1 ppm/°C sinter at 1150°C. It is proposed as a candidate material for ISM band components and GPS antennas.

AB - The microwave dielectric properties and microstructures of x(Mg 0.7Zn0.3)0.95Co0.05TiO 3-(1 - x)C0.8Sr0.2TiO3 ceramics prepared using a mixed oxide route were investigated. (Mg0.7Zn 0.3)0.95Co0.05TiO3 has a dielectric constant (εr)of ∼20, a high-quality factor (Q×f)of ∼163,560 GHz, and a temperature coefficient of resonant frequency (t f)of ∼-65 ppm/°C. To produce a temperature-stable material, Ca0.8Sr0.2TiO3, which has a large positive tf value of 990ppm/°C, was added to (Mg0.7Zn 0.3)0.95Co0.05TiO3. The temperature coefficient of resonant frequency increased with increasing Ca 0.8Sr0.2TiO3 content, going through zero at x = 0.95. The microwave dielectric material 0.95(Mg0.7Zn 0.3)0.95Co0.05TiO3-0D5Ca 0.8Sr0.2TiO3 has an excellent combination of microwave dielectric properties: εr ∼22.5, Q×f×90,000 (at 9GHz), and tf ~0.1 ppm/°C sinter at 1150°C. It is proposed as a candidate material for ISM band components and GPS antennas.

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JF - Journal of Alloys and Compounds

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