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The correlation between τɛ and the tolerance factor in (Sr, Ca) (Ti, Zr)O3 microwave dielectric ceramics

Published online by Cambridge University Press:  31 January 2011

Chae-Il Cheon ,
Jeong-Seog Kim  and
Hyeung-Gyu Lee
Chae-Il Cheon
Affiliation:
Division of Materials and Chemical Engineering, Hoseo University, San 29-1, Sechul-Ri, Baebang-Myun, Asan-Si, Chungnam, 336-795, Korea
Jeong-Seog Kim
Affiliation:
Division of Materials and Chemical Engineering, Hoseo University, San 29-1, Sechul-Ri, Baebang-Myun, Asan-Si, Chungnam, 336-795, Korea
Hyeung-Gyu Lee
Affiliation:
Korea Electronics Technology Institute, 455-6, Masan-Ri, Jinwi-Myon, Pyungtaek-Si, Kyunggi-Do, 451-860, Korea
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Abstract

Microwave dielectric properties and the relationship between the temperature coefficient of the dielectric constant (τ ɛ) and the tolerance factor were investigated in (Sr0.2Ca0.8) (Ti1–xZrx)O3 ceramics. The τɛ increased linearly as the tolerance factor decreased from 0.984 to 0.929 in the whole composition range of the (Sr0.2Ca0.8) (Ti1–xZrx)O3 solid solution. At the composition of (Sr0.2Ca0.8) (Ti0.04Zr0.96)O3, the dielectric constant was 34 and Q · f was 10,938 GHz and the temperature coefficient of the resonance frequency (τɛ) was supposed to be near zero.

Type
Articles
Information
Journal of Materials Research , Volume 13 , Issue 5 , May 1998 , pp. 1107 - 1109
Copyright
Copyright © Materials Research Society 1998

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References

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