Dielectric Properties and Maxwell-Wagner Relaxation of Compounds ACu3Ti4O12 (A=Ca,Bi2/3,Y2/3,La2/3)

Authors

Jianjun Liu, University of Nebraska at OmahaFollow
Chun-Gang Duan, University of Nebraska at Omaha
Wai-Ning Mei, University of Nebraska at OmahaFollow
Robert W. Smith, University of Nebraska at OmahaFollow
John R. Hardy, University of Nebraska-Lincoln

Document Type

Article

Publication Date

1-1-2005

Publication Title

Journal of Applied Physics

Volume

98

Abstract

We have studied the frequency and temperature dependences of permittivity and impedance of the compounds ACu3Ti4O12 A=Ca, Bi2/3, Y2/3, La2/3 in the ranges of 10−1–106 Hz and −150–200 °C. All compounds investigated display similar dielectric properties. Specifically, they all have a Debye-like relaxation and their dielectric constants are independent of frequency and temperature over a wide range. They all have two electrical responses in impedance formalism, indicating that there are two distinct contributions. We attribute them to grains and grain boundaries in the ceramic samples and explain the dielectric behaviors by Maxwell-Wagner relaxation arising at the interfaces between grains and their boundaries.

Comments

Published in JOURNAL OF APPLIED PHYSICS 98, 093703 (2005). Copyright © 2005 American Institute of Physics. Used by permission.

Recommended Citation

Liu, Jianjun; Duan, Chun-Gang; Mei, Wai-Ning; Smith, Robert W.; and Hardy, John R., "Dielectric Properties and Maxwell-Wagner Relaxation of Compounds ACu3Ti4O12 (A=Ca,Bi2/3,Y2/3,La2/3)" (2005). Physics Faculty Publications. 7.
https://digitalcommons.unomaha.edu/physicsfacpub/7