Phase evolution and enhanced dielectric properties of BaO·Nd 2O 3·TiO 2·B 2O 3 glass-based dielectrics containing CaCu 3Ti 4O 12

Sung Hun Key; Dong Wook Lee; Jae Woong Jung; Byeong Kon Kim; Yong Soo Cho

doi:10.1016/j.jallcom.2012.03.094

Phase evolution and enhanced dielectric properties of BaO·Nd ₂O ₃·TiO ₂·B ₂O ₃ glass-based dielectrics containing CaCu ₃Ti ₄O ₁₂

Sung Hun Key, Dong Wook Lee, Jae Woong Jung, Byeong Kon Kim, Yong Soo Cho

Department of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

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	https://doi.org/10.1016/j.jallcom.2012.03.094
Publication status	Published - 2012 Jul 25

Bibliographical note

Funding Information:
This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MEST) (No. 2011-0017983 ).

All Science Journal Classification (ASJC) codes

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

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10.1016/j.jallcom.2012.03.094

Cite this

@article{4c25a731159a42fd8090229f0c4637cf,

title = "Phase evolution and enhanced dielectric properties of BaO·Nd 2O 3·TiO 2·B 2O 3 glass-based dielectrics containing CaCu 3Ti 4O 12 ",

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.",

author = "Key, {Sung Hun} and Lee, {Dong Wook} and Jung, {Jae Woong} and Kim, {Byeong Kon} and Cho, {Yong Soo}",

note = "Funding Information: This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MEST) (No. 2011-0017983 ).",

year = "2012",

month = jul,

day = "25",

doi = "10.1016/j.jallcom.2012.03.094",

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journal = "Journal of the Less-Common Metals",

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AU - Key, Sung Hun

AU - Lee, Dong Wook

AU - Jung, Jae Woong

AU - Kim, Byeong Kon

AU - Cho, Yong Soo

N1 - Funding Information: This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MEST) (No. 2011-0017983 ).

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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