Abstract
The microwave dielectric characteristics of AWO4 (A = Mg, Zn, Mn, Ca, Sr, Ba) compounds and their relations with structure have been investigated as a function of A cations. Crystal structure was investigated by XRD; the structure changed from wolframite to scheelite with increasing size of A cation. Dielectric properties such as permittivity, temperature coefficient of resonant frequency (τf), and quality factors (Q × f) were found to be correlated with the size of A cations and the structure of compounds. Permittivity decreased with the size of A cations, and temperature coefficient of resonant frequency was correlated with unit cell volume. AWO4 compounds are suitable for the applications of low-k dielectric materials; permittivity = 8-15, τf = -50 to -70, and Q × f = 60,000-70,000.
| Original language | English |
|---|---|
| Pages (from-to) | 2051-2054 |
| Number of pages | 4 |
| Journal | Journal of the European Ceramic Society |
| Volume | 26 |
| Issue number | 10-11 |
| DOIs | |
| Publication status | Published - 2006 |
| Externally published | Yes |
Bibliographical note
Funding Information:This research was supported by a grant from the Center for Advanced Materials Processing (CAMP) of the 21st Century Frontier R&D Program funded by the Ministry of Science and Technology, Republic of Korea.
Keywords
- Dielectric properties
- Microwave processing
- Sintering
- Substrates
- Tungstate
ASJC Scopus subject areas
- Ceramics and Composites
- Materials Chemistry