《ceramic (LTCC) materials》.pdfVIP

Journal of Advanced Ceramics 2012, 1(2): 89-99 DOI: 10.1007/s40145-012-0011-3 ISSN 2226-4108 Review Towards rational design of low-temperature co-fired ceramic (LTCC) materials * Ji ZHOU State Key Laboratory of New Ceramics and Fine Processing, Tsinghua University, Beijing 100084, China Received May 29, 2012; Accepted June 7, 2012 © The Author(s) 2012. This article is published with open access at S Abstract: High performance low temperature co-fired ceramic (LTCC) dielectrics is highly desired for next generation information technology. The rational design is a key issue for the development of new LTCC materials. In comparison to the design of conventional electroceramics, more attention should be paid on the formation process of the material structure for that of LTCC, in addition to the physical properties, due to the special requirement in fabrication processing. In this paper, sintering mechanism of three types of LTCC materials, i.e., glass-ceramics, glass ceramic composite, and glass bonded ceramics, as well as important factors of their dielectric properties are discussed and summarized, and the design strategies for LTCC dielectrics, based on new matrix materials with much lower sintering temperature or higher quality, are proposed. As an example for rational design, oxyfluoride glass-ceramic based dielectrics, a new class of LTCC materials with low ε, is analyzed.