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Microwave Dielectric Properties of the (l-x)$TiTe_3O_{8}$-x$MgTiO_3$ Ceramics with Sintering Temperature  

최의선 (광운대학 전자재료공학과)
김재식 (광운대학 전자재료공학)
이문기 (광운대학 전자재료공학)
류기원 (여주대학 전자)
이영희 (광운대학 전자재료공학과)
Publication Information
The Transactions of the Korean Institute of Electrical Engineers C / v.53, no.9, 2004 , pp. 459-463 More about this Journal
Abstract
In this study, the (l-x)$TiTe_3O_{8}$-x$MgTiO_3$ ceramics were investigated to obtain the improved dielectric properties of a high temperature stability and a sintering temperature of less than $900^{\circ}C$ which was necessary for the LTCC. According to the X-ray diffraction patterns of the (l-x)$TiTe_3O_{8}$-x$MgTiO_3$(x=0∼1) ceramics, the columbite structure of $TiTe_3O_{8}$ and ilmenite structure of $MgTiO_3$ were coexisted. Increasing the $MgTiO_3$ mole ratio(x), the density and dielectric constant were decreased and temperature coefficient of resonant frequency was moved to the negative direction and the quality factor was increased. In the case of the 0.6$TiTe_3O_{8}$-0.4$MgTiO_3$ ceramics sintered at $830^{\circ}C$ for 3hr., the microwave dielectric properties were $\varepsilon_{\gamma}$=29.3, Q${\times}$$f_{\gamma}$=39.600GHz and $\tau$$_{f}$=+9.3ppm/$^{\circ}C$.
Keywords
Microwave Dielectric; $TiTe_3O_{8-x}$; LTCC;
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