Dielectric properties of low temperature cofired BaO–Nd₂O₃–TiO₂ ceramics

Authors: Wang, S.¹; Wu, S. H.²; Liu, J. F.²; Chen, Z. B.²

Source: Advances in Applied Ceramics, Volume 108, Number 7, October 2009 , pp. 396-399(4)

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Abstract:

Glass ceramic materials were fabricated based on BaO–ZnO–B₂O₃ (BZB) glass with Ba_6–3x(Nd_1–yBi_y)_8+2xTi₁₈O₅₄ ceramics. It was investigated that the dielectric properties and the sintering behaviour of glass ceramics. Doped by BZB glass, the sintering temperature of Ba_6–3x(Nd_1–yBi_y)_8+2xTi₁₈O₅₄ ceramics was significantly lowered to 900�C in comparison to 1300�C for samples without glass. The low softening point BZB glass provided good wetting between BZB and Ba_6–3x(Nd_1–yBi_y)_8+2xTi₁₈O₅₄, and the reaction between glass and ceramics was increased. The dielectric constant of BZB-Ba_6–3x(Nd_1–yBi_y)_8+2xTi₁₈O₅₄ system was increased with increasing firing time. The composite sintered at 900�C for 2 h exhibited excellent dielectric properties were achieved, with dielectric constant of 75, the dielectric loss of 5 � 10^–5 and the temperature coefficient of �30 ppm �C^–1.

Keywords: BAO?ND2O3?TIO2; DIELECTRIC PROPERTIES; LTCC

Document Type: Research Article

DOI: http://dx.doi.org/10.1179/174367609X414116

Affiliations: 1: Institute of Electronics and Information Engineering, Tianjin University, Tianjin 300072, China;, Email: homehv@yahoo.com.cn 2: Institute of Electronics and Information Engineering, Tianjin University, Tianjin 300072, China

Publication date: 2009-10-01

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