Microwave dielectric properties and mixture behavior of (Mg0.95Co0.05)TiO3-Ca0.6La0.8/3TiO3 ceramic system

Cheng Liang Huang; Chung Long Pan; Jui Feng Hsu; Jun Jie Wang

doi:10.1016/j.jallcom.2007.07.093

Microwave dielectric properties and mixture behavior of (Mg_0.95Co_0.05)TiO₃-Ca_0.6La_0.8/3TiO₃ ceramic system

Cheng Liang Huang, Chung Long Pan, Jui Feng Hsu, Jun Jie Wang

Department of Electrical Engineering

Research output: Contribution to journal › Article › peer-review

17 Citations (Scopus)

Abstract

The microwave dielectric properties of the (1 - x)(Mg_0.95Co_0.05)TiO₃-xCa_0.6La_0.8/3TiO₃ ceramic system prepared by mixed oxide route have been investigated. The crystal structures and the microstructures of the ceramics were characterized by means of X-ray and SEM. The microwave dielectric properties are functions of the sintering temperature as well as the composition. Alternation of phases between ilmenite-type structure and pseudo-cubic perovskite crystal is observed. The 0.9(Mg_0.95Co_0.05)TiO₃-0.1Ca_0.6La_0.8/3TiO₃ ceramics possesses excellent microwave dielectric properties with a dielectric constant ε_r of 21.86, a Q × f value of 131,000 GHz (at 7 GHz) and a τ_f value of -15.5 ppm/°C at 1350 °C/4 h. It is proposed as a suitable material candidate for applications requiring low microwave dielectric loss.

Original language	English
Pages (from-to)	521-526
Number of pages	6
Journal	Journal of Alloys and Compounds
Volume	461
Issue number	1-2
DOIs	https://doi.org/10.1016/j.jallcom.2007.07.093
Publication status	Published - 2008 Aug 11

All Science Journal Classification (ASJC) codes

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

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10.1016/j.jallcom.2007.07.093

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title = "Microwave dielectric properties and mixture behavior of (Mg0.95Co0.05)TiO3-Ca0.6La0.8/3TiO3 ceramic system",

abstract = "The microwave dielectric properties of the (1 - x)(Mg0.95Co0.05)TiO3-xCa0.6La0.8/3TiO3 ceramic system prepared by mixed oxide route have been investigated. The crystal structures and the microstructures of the ceramics were characterized by means of X-ray and SEM. The microwave dielectric properties are functions of the sintering temperature as well as the composition. Alternation of phases between ilmenite-type structure and pseudo-cubic perovskite crystal is observed. The 0.9(Mg0.95Co0.05)TiO3-0.1Ca0.6La0.8/3TiO3 ceramics possesses excellent microwave dielectric properties with a dielectric constant εr of 21.86, a Q × f value of 131,000 GHz (at 7 GHz) and a τf value of -15.5 ppm/°C at 1350 °C/4 h. It is proposed as a suitable material candidate for applications requiring low microwave dielectric loss.",

author = "Huang, {Cheng Liang} and Pan, {Chung Long} and Hsu, {Jui Feng} and Wang, {Jun Jie}",

note = "Funding Information: This work was supported by the National Science Council of the Republic of China under grant NSC95-2262-E-006-035-cc3.",

year = "2008",

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doi = "10.1016/j.jallcom.2007.07.093",

language = "English",

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AU - Huang, Cheng Liang

AU - Pan, Chung Long

AU - Hsu, Jui Feng

AU - Wang, Jun Jie

N1 - Funding Information: This work was supported by the National Science Council of the Republic of China under grant NSC95-2262-E-006-035-cc3.

PY - 2008/8/11

Y1 - 2008/8/11

N2 - The microwave dielectric properties of the (1 - x)(Mg0.95Co0.05)TiO3-xCa0.6La0.8/3TiO3 ceramic system prepared by mixed oxide route have been investigated. The crystal structures and the microstructures of the ceramics were characterized by means of X-ray and SEM. The microwave dielectric properties are functions of the sintering temperature as well as the composition. Alternation of phases between ilmenite-type structure and pseudo-cubic perovskite crystal is observed. The 0.9(Mg0.95Co0.05)TiO3-0.1Ca0.6La0.8/3TiO3 ceramics possesses excellent microwave dielectric properties with a dielectric constant εr of 21.86, a Q × f value of 131,000 GHz (at 7 GHz) and a τf value of -15.5 ppm/°C at 1350 °C/4 h. It is proposed as a suitable material candidate for applications requiring low microwave dielectric loss.

AB - The microwave dielectric properties of the (1 - x)(Mg0.95Co0.05)TiO3-xCa0.6La0.8/3TiO3 ceramic system prepared by mixed oxide route have been investigated. The crystal structures and the microstructures of the ceramics were characterized by means of X-ray and SEM. The microwave dielectric properties are functions of the sintering temperature as well as the composition. Alternation of phases between ilmenite-type structure and pseudo-cubic perovskite crystal is observed. The 0.9(Mg0.95Co0.05)TiO3-0.1Ca0.6La0.8/3TiO3 ceramics possesses excellent microwave dielectric properties with a dielectric constant εr of 21.86, a Q × f value of 131,000 GHz (at 7 GHz) and a τf value of -15.5 ppm/°C at 1350 °C/4 h. It is proposed as a suitable material candidate for applications requiring low microwave dielectric loss.

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Microwave dielectric properties and mixture behavior of (Mg_0.95Co_0.05)TiO₃-Ca_0.6La_0.8/3TiO₃ ceramic system

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