Browse > Article
http://dx.doi.org/10.4313/JKEM.2016.29.12.781

Microwave Dielectric Properties of Ca[(Li1/3Nb2/3)0.2Ti0.8]O3-δ Ceramics with Addition of Zn-B-O Glass Systems  

In, Chi-Seung (Department of Materials Science and Engineering, Korea University)
Kim, Shi Yeon (Department of Materials Science and Engineering, Korea University)
Yeo, Dong-Hun (Engineering Ceramic Center, Korea Institute of Ceramic Engineering & Technology)
Shin, Hyo-Soon (Engineering Ceramic Center, Korea Institute of Ceramic Engineering & Technology)
Nahm, Sahn (Department of Materials Science and Engineering, Korea University)
Publication Information
Journal of the Korean Institute of Electrical and Electronic Material Engineers / v.29, no.12, 2016 , pp. 781-785 More about this Journal
Abstract
With trend of the miniaturization and the high-functionalizing of mobile communication system, low-loss microwave dielectric materials are widely used for high frequency communication components. These dielectric materials should be co-sintered with highly electric-conducting metal such as silver or copper for high-frequency and thick film process application. Sintering temperature of $Ca(Li_{1/3}Nd_{2/3})_{0.2}Ti_{0.8}]O_{3-{\delta}}$, which has excellent dielectric properties such as ${\varepsilon}_r$ above 40, quality factor ($Q{\cdot}f_0$) above 16,000 GHz, and TCF (temperature coefficient of resonant frequency) of $-20{\sim}-10ppm/^{\circ}C$, is reported as high as $1,175^{\circ}C$, so it could not be co-sintered with silver or copper. Therefore in this study, low-temperature melting glasses of Zn-B-O and Zn-B-Si-O systems were added to $Ca[(Li_{1/3}Nb_{2/3})_{0.8}Ti_{0.2}]O_{3-{\delta}}$ to lower its sintering temperature under $900^{\circ}C$ without losing excellency of dielectric properties. With 15 weight % of Zn-B-Si-O glass and sintered at $875^{\circ}C$, specimen showed density of $4.11g/cm^3$, ${\varepsilon}_r$ of 40.1, $Q{\cdot}f_0$ of 4,869 GHz, and TCF of $-5.9ppm/^{\circ}C$. With 15 weight % of Zn-B-O glass and sintered at $875^{\circ}C$, specimen showed density of $4.14g/cm^3$, ${\varepsilon}_r$ of 40.4, $Q{\cdot}f_0$ of 7,059 GHz, and TCF of $-0.92ppm/^{\circ}C$.
Keywords
Microwave dielectric properties; $[Ca(Li_{1/3}Nd_{2/3})_{0.2}Ti_{0.8}]O_{3-{\delta}}$; Zn-B-O; Zn-B-Si-O; LTCC (low temperature co-fired ceramics);
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 Y. S. Heo, H. S. Oh, H. C. Jeong, and K. W. Yeom, J. KIEES, 23, 613 (2012).
2 Q. W. Liao, L. X. Li, X. Ren, and M. J. Wang, J. Am. Ceram. Soc., 95, 3363 (2012). [DOI: https:/doi.org/10.1111/j.1551-2916.2012.05450.x]   DOI
3 S. Hirano, T. Hayashi, and A. Hattori , J. Am. Ceram. Soc., 74, 1320 (1991). [DOI: https:/doi.org/10.1111/j.1151-2916.1991.tb04105.x]   DOI
4 H. H. Shin, T. Byun, and S. O. Yoon, J. Kor. Ceram. Soc., 49, 100 (2012). [DOI: https:/doi.org/10.1111/j.1151-2916.1991.tb04105.x]   DOI
5 C. C. Chiang, S. F. Wang, Y. R. Wang, and C. J. Wei, Ceram. Int., 34, 599 (2008). [DOI: https:/doi.org/10.1016/j.ceramint.2006.12.008]   DOI
6 J. W. Choi, C. Y. Kang, S. J. Yoon, and H. J. Kim, J. Mater. Res., 14, 3567 (1999). [DOI: https:/doi.org/10.1557/JMR.1999.0483]   DOI
7 T. Takada, S. Wang, S. Yoshikawa, J. Jang, and R. Newham, J. Am. Ceram. Soc., 77, 2485 (1994). [DOI: https:/doi.org/10.1111/j.1151-2916.1994.tb04629.x]   DOI
8 C. F. Yang, Jpn. J. Appl. Phys., 38, 3576 (1994). [DOI: https:/doi.org/10.1143/JJAP.38.3576]   DOI
9 S. M. Rhim, S. M. Hong, H. J. Bak, and O. K. Kim, J. Kor. Ceram. Soc., 36, 767 (1999).
10 B. W. Hakki and P. D. Coleman, IRE Trans. Microwave Theory Tech., 8, 402 (1960). [DOI: https://doi.org/10.1109/TMTT.1960.1124749]   DOI
11 W. Wersing, Electronc Ceramics (Elsevier Sci. Publ. Co., New York, 1991) p. 67.
12 S. Nomura, Ferroelectrics, 49, 61 (1983). [DOI: https:/doi.org/10.1080/00150198308244666]   DOI