Choi, YJ Park, JH Park, JH Park, JG 2024-01-21T06:13:42Z 2024-01-21T06:13:42Z 2021-09-05 2004-10 0167-577X https://pubs.kist.re.kr/handle/201004/137193 Middle-permittivity low-temperature co-fired ceramics (LTCC) dielectric compositions with adjustable temperature coefficient have been studied based on CaZrO3-CaTiO3. To lower the densification temperature from 1450 degreesC to less than 900 degreesC, a series of lithium-borosilicate glass system was designed and added to the CaZrO3-CaTiO3 system. As the tau(f) of glass frits and CaZrO3 are slightly negative (-5 to -200 ppm/degreesC) and that of CaTiO3 is significantly positive, zero tau(f) could be realized by mixing an appropriate amount of CaTiO3 (10-20 wt.%) with CaZrO3. Microstructures, physical properties, and microwave dielectric properties were measured as a function of the compositional ratio of CaZrO3-CaTiO3. Nearly zero tau(f), together with an acceptable microwave quality factor, was obtained at the composition Of CaZrO3/CaTiO3/frit=70:15:15 wt.%. (C) 2004 Elsevier B.V. All rights reserved. English ELSEVIER SCIENCE BV GLASS ADDITIONS CERAMICS SYSTEM Middle-permittivity LTCC dielectric compositions with adjustable temperature coefficient Article 10.1016/j.matlet.2004.05.049 1 MATERIALS LETTERS, v.58, no.25, pp.3102 - 3106 MATERIALS LETTERS 58 25 3102 3106 scie scopus 000223822100003 2-s2.0-4344645868 Materials Science, Multidisciplinary Physics, Applied Materials Science Physics Article GLASS ADDITIONS CERAMICS SYSTEM dielectrics electroceramics glasses sintering