Microwave dielectric properties of the (1-x)(Mg0.9Co0.1)TiO3 - x(Ca0.61La0.26)TiO3 ceramics

Hao Liu; Chun Ying Shen; Zheng Dong Lu; Tai Qiu

doi:10.3724/SP.J.1077.2011.11060

Microwave dielectric properties of the (1-x)(Mg_0.9Co_0.1)TiO₃ - x(Ca_0.61La_0.26)TiO₃ ceramics

Hao Liu, Chun Ying Shen, Zheng Dong Lu, Tai Qiu

College of Materials Science and Engineering

Nanjing Tech University

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

1 Scopus citations

Abstract

The microwave dielectric properties of the (1-x)(Mg_0.9Co_0.1)TiO₃ - x(Ca_0.61La_0.26)TiO₃(MCT-CLT) ceramics were investigated. The system was prepared using a conventional solid-state ceramic route. The objective of the present work is to compensate for the negative temperature coefficient of resonant frequency (τ_f) of (Mg_0.9Co_0.1)TiO₃(MCT) by the addition of (Ca_0.61La_0.26)TiO₃ (CLT). The microwave dielectric properties are strongly correlated with the sintering temperature and the composition. Very dense MCT-CLT ceramics were prepared by sintering at 1300°C. When the ceramics were sintered at temperatures above 1300°C, the bulk density decreased and the dielectric properties deteriorated. With the increasing of x, the relative dielectric constant (ε_r) of the ceramics increases and the product of quality factor and resonant frequency (Q×f) decreases. For practical application, 0.87(Mg_0.9Co_0.1)TiO₃ - 0.13(Ca_0.61La_0.26)TiO₃ (87MCT-13CLT) ceramics sintered at 1300°C with a dielectric constant ε_r=22.4, a Q×f value of 35000 GHz and a temperature coefficient of resonance frequency (τ_f) of -8.7×10^-6/°C was proposed in this paper.

Original language	English
Pages (from-to)	664-668
Number of pages	5
Journal	Wuji Cailiao Xuebao/Journal of Inorganic Materials
Volume	26
Issue number	6
DOIs	https://doi.org/10.3724/SP.J.1077.2011.11060
State	Published - Jun 2011

Keywords

(1-x)(MgCo)TiO - x(CaLa)TiO ceramics
Dielectric constant
Microwave dielectric ceramics
Quality factor
Temperature stable resonant frequency

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10.3724/SP.J.1077.2011.11060

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title = "Microwave dielectric properties of the (1-x)(Mg0.9Co0.1)TiO3 - x(Ca0.61La0.26)TiO3 ceramics",

abstract = "The microwave dielectric properties of the (1-x)(Mg0.9Co0.1)TiO3 - x(Ca0.61La0.26)TiO3(MCT-CLT) ceramics were investigated. The system was prepared using a conventional solid-state ceramic route. The objective of the present work is to compensate for the negative temperature coefficient of resonant frequency (τf) of (Mg0.9Co0.1)TiO3 (MCT) by the addition of (Ca0.61La0.26)TiO3 (CLT). The microwave dielectric properties are strongly correlated with the sintering temperature and the composition. Very dense MCT-CLT ceramics were prepared by sintering at 1300°C. When the ceramics were sintered at temperatures above 1300°C, the bulk density decreased and the dielectric properties deteriorated. With the increasing of x, the relative dielectric constant (εr) of the ceramics increases and the product of quality factor and resonant frequency (Q×f) decreases. For practical application, 0.87(Mg0.9Co0.1)TiO3 - 0.13(Ca0.61La0.26)TiO3 (87MCT-13CLT) ceramics sintered at 1300°C with a dielectric constant εr=22.4, a Q×f value of 35000 GHz and a temperature coefficient of resonance frequency (τf) of -8.7×10-6/°C was proposed in this paper.",

keywords = "(1-x)(MgCo)TiO - x(CaLa)TiO ceramics, Dielectric constant, Microwave dielectric ceramics, Quality factor, Temperature stable resonant frequency",

author = "Hao Liu and Shen, {Chun Ying} and Lu, {Zheng Dong} and Tai Qiu",

year = "2011",

month = jun,

doi = "10.3724/SP.J.1077.2011.11060",

language = "英语",

volume = "26",

pages = "664--668",

journal = "Wuji Cailiao Xuebao/Journal of Inorganic Materials",

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AU - Liu, Hao

AU - Shen, Chun Ying

AU - Lu, Zheng Dong

AU - Qiu, Tai

PY - 2011/6

Y1 - 2011/6

N2 - The microwave dielectric properties of the (1-x)(Mg0.9Co0.1)TiO3 - x(Ca0.61La0.26)TiO3(MCT-CLT) ceramics were investigated. The system was prepared using a conventional solid-state ceramic route. The objective of the present work is to compensate for the negative temperature coefficient of resonant frequency (τf) of (Mg0.9Co0.1)TiO3 (MCT) by the addition of (Ca0.61La0.26)TiO3 (CLT). The microwave dielectric properties are strongly correlated with the sintering temperature and the composition. Very dense MCT-CLT ceramics were prepared by sintering at 1300°C. When the ceramics were sintered at temperatures above 1300°C, the bulk density decreased and the dielectric properties deteriorated. With the increasing of x, the relative dielectric constant (εr) of the ceramics increases and the product of quality factor and resonant frequency (Q×f) decreases. For practical application, 0.87(Mg0.9Co0.1)TiO3 - 0.13(Ca0.61La0.26)TiO3 (87MCT-13CLT) ceramics sintered at 1300°C with a dielectric constant εr=22.4, a Q×f value of 35000 GHz and a temperature coefficient of resonance frequency (τf) of -8.7×10-6/°C was proposed in this paper.

AB - The microwave dielectric properties of the (1-x)(Mg0.9Co0.1)TiO3 - x(Ca0.61La0.26)TiO3(MCT-CLT) ceramics were investigated. The system was prepared using a conventional solid-state ceramic route. The objective of the present work is to compensate for the negative temperature coefficient of resonant frequency (τf) of (Mg0.9Co0.1)TiO3 (MCT) by the addition of (Ca0.61La0.26)TiO3 (CLT). The microwave dielectric properties are strongly correlated with the sintering temperature and the composition. Very dense MCT-CLT ceramics were prepared by sintering at 1300°C. When the ceramics were sintered at temperatures above 1300°C, the bulk density decreased and the dielectric properties deteriorated. With the increasing of x, the relative dielectric constant (εr) of the ceramics increases and the product of quality factor and resonant frequency (Q×f) decreases. For practical application, 0.87(Mg0.9Co0.1)TiO3 - 0.13(Ca0.61La0.26)TiO3 (87MCT-13CLT) ceramics sintered at 1300°C with a dielectric constant εr=22.4, a Q×f value of 35000 GHz and a temperature coefficient of resonance frequency (τf) of -8.7×10-6/°C was proposed in this paper.

KW - (1-x)(MgCo)TiO - x(CaLa)TiO ceramics

KW - Dielectric constant

KW - Microwave dielectric ceramics

KW - Quality factor

KW - Temperature stable resonant frequency

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ER -

Microwave dielectric properties of the (1-x)(Mg_0.9Co_0.1)TiO₃ - x(Ca_0.61La_0.26)TiO₃ ceramics

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