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Dielectric properties of La-substituted Pb0.5Ca0.5[(Mg1/3Nb2/3)0.5Ti0.5]O3 ceramics

Published online by Cambridge University Press:  31 January 2011

X. J. Lu  and
X. M. Chen
X. J. Lu
Affiliation:
Institute of Materials Physics & Microstructures, Department of Materials Science & Engineering, Zhejiang University, Hangzhou 310027, People's Republic of China
X. M. Chen
Affiliation:
Institute of Materials Physics & Microstructures, Department of Materials Science & Engineering, Zhejiang University, Hangzhou 310027, People's Republic of China
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Abstract

Modification of Pb0.5Ca0.5[(Mg1/3Nb2/3)0.5Ti0.5]O3 dielectric ceramics was performed by up to 20 mol% La substitution for Pb and Ca. The temperature coefficient of dielectric constant was significantly reduced by the present approach, while an increased Qf factor was achieved. Good microwave dielectric properties were obtained in a composition Pb0.425Ca0.425La0.1[(Mg1/3Nb2/3)0.5Ti0.5]O3: ε = 125; Qf = 3150 GHz; calculated temperature coefficient of resonant frequency δf = +253 ppm/°C.

Type
Articles
Information
Journal of Materials Research , Volume 16 , Issue 7 , July 2001 , pp. 2053 - 2056
Copyright
Copyright © Materials Research Society 2001

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