Tape casting and dielectric properties of sr2znsi2o7-based ceramic-glass composite for low-temperature co-fired ceramics applications

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Title:	Tape casting and dielectric properties of sr2znsi2o7-based ceramic-glass composite for low-temperature co-fired ceramics applications
Authors:	Tony Joseph Sebastian, M T Jantunen, H Jacob, M Sreemoolanadhan, H
Keywords:	LTCC applications Microwave-absorption Substrate applications Complex permittivity Crystals Resonator Halides Systems Oxides
Issue Date:	2011
Publisher:	Wiley
Citation:	International Journal of Applied Ceramic Technology 8(4):854-864;Jul-Aug 2011
Abstract:	The Sr2ZnSi2O7 ceramics sintered at 1475 degrees C has epsilon(r) = 8.5, Q (u) x f = 105,000 GHz (at 12.63 GHz), and tau(f) = -51.5 ppm/degrees C. The sintering temperature of Sr2ZnSi2O7 has been lowered to 875 degrees C by the addition of 20Li (2)O-20MgO-20ZnO-20B(2)O(3)-20SiO(2) (LMZBS) glass. Addition of a small amount of SrTiO3 lowered the value of tf. Tapes were cast using the composition Sr2ZnSi2O7+15wt% LMZBS. The stacked and sintered tapes exhibited epsilon(r) similar to 7 and tan delta similar to 10(-3) at 290K. The chemical compatibility of Ag with the ceramic-glass composites was also investigated.
URI:	http://ir.niist.res.in:8080/jspui/handle/123456789/757
ISSN:	1546-542X
Appears in Collections:	2011

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