Impedance Spectroscopy Analysis of the Screen Printed Thick Films

Abstract

In this study, we fabricate 3 wt% Li2CO3 doped (Ba,Sr)TiO3 thick films on the Ag/Pd bottom electrode printed Al2O3 substrates for the LTCCs (low temperature co-fired ceramics) applications. From the X-ray diffraction analysis, 3 wt% Li2CO3 doped BST thick films on the Ag/Pd printed Al2O3 substrates, which sintered at 900℃, showed perovskite structure without any pyro phase. The dielectric properties of 3 wt% Li2CO3 doped BST thick films are measured from 1 kHz to 1 MHz. To investigate the electrical properties of 3 wt% Li2CO3 doped BST thick films, we employ the impedance spectroscopy.

Densification and Dielectric Properties of Ba0.5Sr0.5TiO3-Glass Composites for LTCC Applications

“…Thus far, the developed sintering aids yielding sintering temperature of about 900 o C include B 2 O 3 -Li 2 CO 3 [7][8][9] and Li 2 CO 3 . [10][11][12][13][14] In this work, the feasibility of a barium zincoborate (BZB) glass as a sintering aid for Ba 0.5 Sr 0.5 TiO 3 was investigated by systematically varying the glass addition to the Ba 0.5 Sr 0.5 TiO 3 -BZB glass composites. The resultant densification and dielectric properties are reported herein.…”