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Tape Casting and Dielectric Properties of Sr 2 ZnSi 2 O 7 ‐Based Ceramic–Glass Composite for Low‐Temperature Co‐fired Ceramics Applications
Author(s) -
Joseph Tony,
Sebastian Mailadil T.,
Jantunen Heli,
Jacob Mohan,
Sreemoolanadhan Hariharaiyer
Publication year - 2010
Publication title -
international journal of applied ceramic technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.4
H-Index - 57
eISSN - 1744-7402
pISSN - 1546-542X
DOI - 10.1111/j.1744-7402.2010.02518.x
Subject(s) - materials science , ceramic , sintering , composite material , composite number , dielectric , tape casting , casting , optoelectronics
The Sr 2 ZnSi 2 O 7 ceramics sintered at 1475°C has ɛ r =8.5, Q u × f =105,000 GHz (at 12.63 GHz), and τ f =−51.5 ppm/°C. The sintering temperature of Sr 2 ZnSi 2 O 7 has been lowered to 875°C by the addition of 20Li 2 O–20MgO–20ZnO–20B 2 O 3 –20SiO 2 (LMZBS) glass. Addition of a small amount of SrTiO 3 lowered the value of τ f . Tapes were cast using the composition Sr 2 ZnSi 2 O 7 +15 wt% LMZBS. The stacked and sintered tapes exhibited ɛ r ∼7 and tan δ∼10 −3 at 290 K. The chemical compatibility of Ag with the ceramic–glass composites was also investigated.