Abstract
The effect of ZrO2 on crystallographic order, microstructure, and microwave dielectric properties of Ba(Zn1/3Ta2/3)O3 (BZT) ceramics was investigated. A small amount of ZrO2 disturbed the 1:2 cation ordering. The average grain size of the BZT significantly increased with the addition of ZrO2, which was attributed to liquid-phase formation. The relative density increased with the addition of a small amount of ZrO2, but It decreased when the ZrO2 content was increased. Variation of the dielectric constant with ZrO2 addition ranged between 27 and 30, and the temperature coefficient of resonant frequency increased abruptly as the ZrO2 amount exceeded 2.0 mol%. The Q value of the BZT significantly improved with the addition of ZrO2, which could be explained by the increased relative density and grain size. The maximum Q×f value achieved in this investigation was ∼164 000 GHz for the BZT with 2.0 mol% ZrO2 sintered at 1550°C for 10 h.
| Original language | English |
|---|---|
| Pages (from-to) | 165-168 |
| Number of pages | 4 |
| Journal | Journal of the American Ceramic Society |
| Volume | 85 |
| Issue number | 1 |
| Publication status | Published - 2002 Jan 1 |
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ASJC Scopus subject areas
- Ceramics and Composites
Cite this
Microstructure and microwave dielectric properties of Ba(Zn1/3Ta2/3)O3 ceramics with ZrO2 addition. / Yang, Jung In; Nahm, Sahn; Choi, Chang Hack; Lee, Hwack Joo; Park, Hyun Min.
In: Journal of the American Ceramic Society, Vol. 85, No. 1, 01.01.2002, p. 165-168.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Microstructure and microwave dielectric properties of Ba(Zn1/3Ta2/3)O3 ceramics with ZrO2 addition
AU - Yang, Jung In
AU - Nahm, Sahn
AU - Choi, Chang Hack
AU - Lee, Hwack Joo
AU - Park, Hyun Min
PY - 2002/1/1
Y1 - 2002/1/1
N2 - The effect of ZrO2 on crystallographic order, microstructure, and microwave dielectric properties of Ba(Zn1/3Ta2/3)O3 (BZT) ceramics was investigated. A small amount of ZrO2 disturbed the 1:2 cation ordering. The average grain size of the BZT significantly increased with the addition of ZrO2, which was attributed to liquid-phase formation. The relative density increased with the addition of a small amount of ZrO2, but It decreased when the ZrO2 content was increased. Variation of the dielectric constant with ZrO2 addition ranged between 27 and 30, and the temperature coefficient of resonant frequency increased abruptly as the ZrO2 amount exceeded 2.0 mol%. The Q value of the BZT significantly improved with the addition of ZrO2, which could be explained by the increased relative density and grain size. The maximum Q×f value achieved in this investigation was ∼164 000 GHz for the BZT with 2.0 mol% ZrO2 sintered at 1550°C for 10 h.
AB - The effect of ZrO2 on crystallographic order, microstructure, and microwave dielectric properties of Ba(Zn1/3Ta2/3)O3 (BZT) ceramics was investigated. A small amount of ZrO2 disturbed the 1:2 cation ordering. The average grain size of the BZT significantly increased with the addition of ZrO2, which was attributed to liquid-phase formation. The relative density increased with the addition of a small amount of ZrO2, but It decreased when the ZrO2 content was increased. Variation of the dielectric constant with ZrO2 addition ranged between 27 and 30, and the temperature coefficient of resonant frequency increased abruptly as the ZrO2 amount exceeded 2.0 mol%. The Q value of the BZT significantly improved with the addition of ZrO2, which could be explained by the increased relative density and grain size. The maximum Q×f value achieved in this investigation was ∼164 000 GHz for the BZT with 2.0 mol% ZrO2 sintered at 1550°C for 10 h.
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UR - http://www.scopus.com/inward/citedby.url?scp=0036343756&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:0036343756
VL - 85
SP - 165
EP - 168
JO - Journal of the American Ceramic Society
JF - Journal of the American Ceramic Society
SN - 0002-7820
IS - 1
ER -