Calcium aluminoborosilicate-based dielectrics containing CaCu 3Ti4O12 as a filler

Byeong Kon Kim, Dong Wook Lee, Sung Hun Key, Tae Jin Jo, Seong Min Jeong, Kwang Jin Kim, Min Seok Jeon, Jun Kwang Song, Yong Soo Cho

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17 Citations (Scopus)

Abstract

High dielectric constant (k) CaCu3Ti4O12 (CCTO) has been studied as a potential filler for low-temperature cofired ceramics (LTCC) based on typical calcium aluminoborosilicate glass. CCTO does not appear to be chemically reactive with the glass regardless of the firing temperature over the compositional range of 30-90 wt% CCTO. Dielectric constant and dielectric loss turned out to depend strongly on the relative content of CCTO and firing temperature. As an optimal composition, the glass with 60 wt% CCTO exhibited a k∼32 and tan δ∼0.01 as a result of firing at 850°C, which is preferably applicable for the medium k LTCC applications. The higher content of 90 wt% CCTO needed to be densified at 900°C for better densification with a higher dielectric constant of ∼150. However, the 900°C firing was not acceptable for the 30 and 60 wt% CCTO-containing samples due to the unexpected expansion of samples leading to significantly enlarged pores.

Original languageEnglish
Pages (from-to)2334-2338
Number of pages5
JournalJournal of the American Ceramic Society
Volume93
Issue number8
DOIs
Publication statusPublished - 2010 Aug

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Materials Chemistry

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    Kim, B. K., Lee, D. W., Key, S. H., Jo, T. J., Jeong, S. M., Kim, K. J., Jeon, M. S., Song, J. K., & Cho, Y. S. (2010). Calcium aluminoborosilicate-based dielectrics containing CaCu 3Ti4O12 as a filler. Journal of the American Ceramic Society, 93(8), 2334-2338. https://doi.org/10.1111/j.1551-2916.2010.03744.x