Microwave dielectric properties of low temperature fired Ba₅Nb₄O₁₅ ‐ BaWO₄ ceramics supplemented with their own nanoparticles for LTCC applications

Abstract

Polycrystalline Ba5Nb4O15 (BNO) ‐ BaWO4 (BWO) composite ceramics are prepared by adding their own nanoparticles as a sintering aid. The prepared samples exhibited the maximum relative density of 98.2% at 900°C. The complex dielectric response of these composite ceramics are analysed by Havriliak ‐ Negami (HN) equation. The BNO ‐ BWO composite added with x=3 wt% of their nanoparticles, fired at 900oC displayed the best microwave dielectric properties; εr=39 and Q×f0=59.8 THz at 9.44 GHz. The obtained results of BNO ‐ BWO composite makes this material as a potential candidate for LTCC applications.

Low‐temperature co‐fired ceramic application of SmTaO4 and YTaO4 with ZnO‐B2O3‐SiO2 additive

“…[8][9][10] The implementation of low-temperature co-firing processes typically involves adding significant amounts of low-melting compounds as sintering aids, synthesizing high surface activity powders using wet chemical methods, using small particle size ceramic powders as raw materials, or using ceramic materials with lower sintering temperatures. [11][12][13][14] Borosilicate glasses, known for their low melting point (400-700 • C) and ability to derive a significant amount of liquid phases, [15][16][17][18][19] are commonly used as sintering aids for LTCC. Among them, ZnO-B 2 O 3 -SiO 2 (ZBS) glass has been extensively researched and applied in various ceramics.…”