TITLE

Dielectric properties of Bi[sub 2]O[sub 3]–ZnO–Ta[sub 2]O[sub 5] pyrochlore and zirconolite structure ceramics

AUTHOR(S)
Ang, Chen; Yu, Zhi; Youn, H. J.; Randall, C. A.; Bhalla, A. S.; Cross, L. E.; Lanagan, M.
PUB. DATE
May 2003
SOURCE
Applied Physics Letters;5/26/2003, Vol. 82 Issue 21, p3734
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
This letter reports the dielectric properties of the cubic pyrochlore (Bi[sub 3/4]Zn[sub ¼])[sub 2](Zn[sub ¼]Ta[sub 3/4])[sub 2]O[sub 7], monoclinic zirconolite Bi[sub 2](Zn[sub ⅓]Ta[sub 2/3])[sub 2]O[sub 7], and their composites in the temperature range of 10400 K from 10² to ∼ 10[sup 10] Hz. Composites with a near zero temperature coefficient of capacitance (TCC) consisting of the cubic pyrochlore and monoclinic zirconolite phases have been obtained. The observed microwave dielectric properties (∈=∼60, Q = ∼325, and TCC = ∼30 ppm/K at ∼5.1 GHz) as well as their low sintering temperatures (950-1100°C) show that the compounds are promising materials for recently developed microwave devices, which demand that dielectric ceramics can be cofired with silver electrodes.
ACCESSION #
9815498

 

Related Articles

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics