Session B: Advanced Steels, High Temperature Metallic Materials and Ceramic MaterialsNo Access

DIELECTRIC PROPERTIES OF Ca_(1-x)Zn_xLa₄Ti₅O₁₇ CERAMICS AT MICROWAVE FREQUENCIES

Department of Electrical Engineering, Lunghwa University of Science and Technology, Gueishan Shiang, Taoyuan County, Taiwan

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and

Jian-Min Tsai

Department of Electrical Engineering, Lunghwa University of Science and Technology, Gueishan Shiang, Taoyuan County, Taiwan

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https://doi.org/10.1142/S0217979209060658Cited by:1 (Source: Crossref)

Abstract

In this paper, the microwave dielectric properties of Ca_(1-x)Zn_xLa₄Ti₅O₁₇ ceramics have been studied. The diffraction peaks of Ca_(1-x)Zn_xLa₄Ti₅O₁₇ ceramics shift to higher angles as x increases from 0 to 0.01 and nearly unchanged with x increasing from 0.01 to 0.03. A maximum density of dielectric constant value of 57 and a quality factor (Q × f) of 15000 GHz can be obtained for Ca_0.99Zn_0.01La₄Ti₅O₁₇ ceramic sintered at 1450°C for 4h. A near-zero temperature coefficient of resonant frequency (τf) of -8.1 ppm/°C can be obtained for Ca_0.99Zn_0.01La₄Ti₅O₁₇ ceramic sintered at 1450°C for 4h.

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