Structures and dielectric properties of a new dielectric material system xMgTiO3–(1−x)MgTa2O6 at microwave frequency

ABSTRACTThe dielectric properties and the microstructures of xLa(Mg1/2Ti1/2)O3−(1−x)CaTiO3 ceramics with B2O3 additions (0.25wt%) prepared with conventional solid-state route have been investigated. Doping with B2O3 (0.25wt%) can effectively promote the densification and the dielectric properties of xLa(Mg1/2Ti1/2)O3−(1−x)CaTiO3 ceramics. It is found that xLa(Mg1/2Ti1/2)O3−(1−x)CaTiO3 ceramics can be sintered at 1400°C due to the liquid phase effect of B2O3 addition observed by Scanning Electronic Microscopy. At 1425°C, 0.5La(Mg1/2Ti1/2)O3−0.5CaTiO3 ceramics with 0.25 wt% B2O3 addition possesses a dielectric constant (εr) of 43, a Q×f value of 24470 (at 8GHz) and a temperature coefficients of resonant frequency (τf) of -8.94 ppm/°C. As an increasing the content of La(Mg1/2Ti1/2)O3, the highest Q×f value of 30824(GHz) could be achieved for X=0.7.

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New dielectric material system of Nd(Mg1/2Ti1/2)O3–SrTiO3 in the microwave frequency range

Journal of Alloys and Compounds ◽

10.1016/j.jallcom.2010.11.006 ◽

2011 ◽

Vol 509 (5) ◽

pp. 2285-2288 ◽

Cited By ~ 19

Author(s):

Yuan-Bin Chen

Keyword(s):

Dielectric Material ◽

Microwave Frequency ◽

Material System ◽

Frequency Range

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New dielectric material system of x(Mg0.95Zn0.05Ti)O3–(1−x)Ca0.8Sm0.4/3TiO3 at microwave frequency

Materials Letters ◽

10.1016/j.matlet.2007.12.028 ◽

2008 ◽

Vol 62 (16) ◽

pp. 2454-2457 ◽

Cited By ~ 12

Author(s):

Yuan-Bin Chen ◽

Cheng-Liang Huang ◽

Shin-Tung Tasi

Keyword(s):

Dielectric Material ◽

Microwave Frequency ◽

Material System

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New dielectric material system of xLa(Mg1/2Ti1/2)O3–(1−x)Ca0.8Sr0.2TiO3 at microwave frequency

Journal of Alloys and Compounds ◽

10.1016/j.jallcom.2010.11.024 ◽

2011 ◽

Vol 509 (5) ◽

pp. 2375-2380 ◽

Cited By ~ 4

Author(s):

Yuan-Bin Chen

Keyword(s):

Dielectric Material ◽

Microwave Frequency ◽

Material System

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Low loss dielectric material system of (1 − x)(Mg0.95Co0.05)2(Ti0.95Sn0.05)O4–x(Ca0.8Sm0.4/3)TiO3 at microwave frequency with a near-zero temperature coefficient of the resonant frequency

Journal of the Ceramic Society of Japan ◽

10.2109/jcersj2.15211 ◽

2016 ◽

Vol 124 (3) ◽

pp. 208-212

Author(s):

Bing-Jing LI ◽

Sih-Yin WANG ◽

Yi-hong LIAO ◽

Shih-Hung LIN ◽

Yuan-Bin CHEN

Keyword(s):

Resonant Frequency ◽

Temperature Coefficient ◽

Dielectric Material ◽

Microwave Frequency ◽

Material System ◽

Zero Temperature ◽

Low Loss

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New dielectric material system of xLa(Mg1/2Ti1/2)O3–(1−x)Ca0.61Nd0.8/3TiO3 at microwave frequency

Journal of Alloys and Compounds ◽

10.1016/j.jallcom.2010.04.132 ◽

2010 ◽

Vol 502 (1) ◽

pp. 153-157 ◽

Cited By ~ 5

Author(s):

Yuan-Bin Chen

Keyword(s):

Dielectric Material ◽

Microwave Frequency ◽

Material System

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New dielectric material system of (Mg0.95Zn0.05)TiO3–Ca0.61Nd0.26TiO3 at microwave frequency

Journal of Alloys and Compounds ◽

10.1016/j.jallcom.2006.11.084 ◽

2008 ◽

Vol 453 (1-2) ◽

pp. 337-340 ◽

Cited By ~ 30

Author(s):

Cheng-Liang Huang ◽

Chia-Feng Tasi ◽

Yuan-Bin Chen ◽

Yao-Chung Cheng

Keyword(s):

Dielectric Material ◽

Microwave Frequency ◽

Material System

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New dielectric material system of Nd(Mg1/2Ti1/2)O3–CaTiO3 at microwave frequency

Solid-State Electronics ◽

10.1016/j.sse.2005.08.009 ◽

2005 ◽

Vol 49 (12) ◽

pp. 1921-1924 ◽

Cited By ~ 8

Author(s):

Cheng-Liang Huang ◽

Yuan-Bin Chen ◽

Shih-Hung Lin

Keyword(s):

Dielectric Material ◽

Microwave Frequency ◽

Material System

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Tunable Microwave Dielectric Properties of Ca0.6La0.8/3TiO3 and Ca0.8Sm0.4/3TiO3-Modified (Mg0.6Zn0.4)0.95Ni0.05TiO3 Ceramics with a Near-Zero Temperature Coefficient

Molecules ◽

10.3390/molecules26164715 ◽

2021 ◽

Vol 26 (16) ◽

pp. 4715

Author(s):

Chung-Long Pan ◽

Chun-Hsu Shen ◽

Shih-Hung Lin ◽

Qi-Zi Lin

Keyword(s):

Dielectric Properties ◽

Temperature Coefficient ◽

Dielectric Material ◽

Microwave Dielectric Properties ◽

Material System ◽

Zero Temperature ◽

Two Phase ◽

Solid State Method ◽

Microwave Dielectric ◽

Communication Devices

The microstructures and microwave dielectric properties of (Mg0.6Zn0.4)0.95Ni0.05TiO3 with Ca0.6La0.8/3TiO3 and Ca0.8Sm0.4/3TiO3 additions prepared by the solid-state method has been investigated. The crystallization and microstructures of these two mixed dielectrics were checked by XRD, EDX, BEI, and SEM to demonstrate two phase systems. Furthermore, the tunable dielectric properties can be achieved by adjusting the amounts of Ca0.6La0.8/3TiO3 and Ca0.8Sm0.4/3TiO3 additions, respectively. After optimization of processed parameters, a new dielectric material system 0.88(Mg0.6Zn0.4)0.95Ni0.05TiO3-0.12Ca0.6La0.8/3TiO3 possesses a permittivity (εr) of 24.7, a Qf value of 106,000 (GHz), and a τf value of 3.8 (ppm/°C), with sintering temperature at 1225 °C for 4 h. This dielectric system with a near-zero temperature coefficient and appropriate microwave properties revealed a high potential for high-quality substrates adopted in wireless communication devices.

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