Abstract
CaCu 3Ti 4O 12 (CCTO) has been studied as a filler for the potential high k LTCC (low temperature co-fired ceramics) materials based on a nonconventional BaO·Nd 2O 3·TiO 2·B 2O 3 glass in terms of firing temperature and CCTO content. The material system was proven to be high crystallizable as the resultant crystalline phases of BaTi(BO 3) 2, BaNd 2Ti 5O 14 and NdBO 3 were observed. The relative content of the crystalline phases were strongly dependant on firing temperature and CCTO content. Interestingly, the 30 wt% CCTO sample showed early densification at 610-670 °C and then unexpected expansion after 850 °C. The 40-60 wt% CCTO samples showed the unexpected secondary densification behavior over the temperature range of 850-950 °C. As a promising example, a combination consisting of the glass and 40 wt% CCTO exhibited k ∼55 and tan δ ∼0.07, which is very rare at this low sintering temperature of 850 °C. These materials system were found to be chemically very stable especially in the H 2SO 4 acid solution.
| Original language | English |
|---|---|
| Pages (from-to) | 40-47 |
| Number of pages | 8 |
| Journal | Journal of Alloys and Compounds |
| Volume | 530 |
| DOIs | |
| Publication status | Published - 2012 Jul 25 |
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All Science Journal Classification (ASJC) codes
- Mechanics of Materials
- Mechanical Engineering
- Metals and Alloys
- Materials Chemistry
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Phase evolution and enhanced dielectric properties of BaO·Nd 2O 3·TiO 2·B 2O 3 glass-based dielectrics containing CaCu 3Ti 4O 12 . / Key, Sung Hun; Lee, Dong Wook; Jung, Jae Woong; Kim, Byeong Kon; Cho, Yong Soo.
In: Journal of Alloys and Compounds, Vol. 530, 25.07.2012, p. 40-47.Research output: Contribution to journal › Article
TY - JOUR
T1 - Phase evolution and enhanced dielectric properties of BaO·Nd 2O 3·TiO 2·B 2O 3 glass-based dielectrics containing CaCu 3Ti 4O 12
AU - Key, Sung Hun
AU - Lee, Dong Wook
AU - Jung, Jae Woong
AU - Kim, Byeong Kon
AU - Cho, Yong Soo
PY - 2012/7/25
Y1 - 2012/7/25
N2 - CaCu 3Ti 4O 12 (CCTO) has been studied as a filler for the potential high k LTCC (low temperature co-fired ceramics) materials based on a nonconventional BaO·Nd 2O 3·TiO 2·B 2O 3 glass in terms of firing temperature and CCTO content. The material system was proven to be high crystallizable as the resultant crystalline phases of BaTi(BO 3) 2, BaNd 2Ti 5O 14 and NdBO 3 were observed. The relative content of the crystalline phases were strongly dependant on firing temperature and CCTO content. Interestingly, the 30 wt% CCTO sample showed early densification at 610-670 °C and then unexpected expansion after 850 °C. The 40-60 wt% CCTO samples showed the unexpected secondary densification behavior over the temperature range of 850-950 °C. As a promising example, a combination consisting of the glass and 40 wt% CCTO exhibited k ∼55 and tan δ ∼0.07, which is very rare at this low sintering temperature of 850 °C. These materials system were found to be chemically very stable especially in the H 2SO 4 acid solution.
AB - CaCu 3Ti 4O 12 (CCTO) has been studied as a filler for the potential high k LTCC (low temperature co-fired ceramics) materials based on a nonconventional BaO·Nd 2O 3·TiO 2·B 2O 3 glass in terms of firing temperature and CCTO content. The material system was proven to be high crystallizable as the resultant crystalline phases of BaTi(BO 3) 2, BaNd 2Ti 5O 14 and NdBO 3 were observed. The relative content of the crystalline phases were strongly dependant on firing temperature and CCTO content. Interestingly, the 30 wt% CCTO sample showed early densification at 610-670 °C and then unexpected expansion after 850 °C. The 40-60 wt% CCTO samples showed the unexpected secondary densification behavior over the temperature range of 850-950 °C. As a promising example, a combination consisting of the glass and 40 wt% CCTO exhibited k ∼55 and tan δ ∼0.07, which is very rare at this low sintering temperature of 850 °C. These materials system were found to be chemically very stable especially in the H 2SO 4 acid solution.
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UR - http://www.scopus.com/inward/citedby.url?scp=84860522969&partnerID=8YFLogxK
U2 - 10.1016/j.jallcom.2012.03.094
DO - 10.1016/j.jallcom.2012.03.094
M3 - Article
AN - SCOPUS:84860522969
VL - 530
SP - 40
EP - 47
JO - Journal of Alloys and Compounds
JF - Journal of Alloys and Compounds
SN - 0925-8388
ER -