Dielectric properties and breakdown behavior of BaCuSi ₄ O ₁₀ -based ceramic glasses with low densification temperatures

BaCuSi 4 O 10 -based ceramic glasses were designed in the BaO–CuO–SiO 2 system as dielectric ceramic glasses. The dielectric behavior of the ceramic glasses was systematically investigated where the dielectric constant and quality factor exhibited strong dependence on sintering temperature and the densification behavior. The ceramic glasses show favorable dielectric properties at relatively low sintering temperatures. In addition, the breakdown strength of the optimized ceramic glass was evaluated, indicating good electrical reliability. The obtained Ceramic Glass 3 exhibited an impressive dielectric performance where ε r of 4.61, Q×f of 4200 GHz, breakdown strength of 200.0 kV/cm, demonstrating excellent electrical reliability. These results suggest that BaCuSi 4 O 10 -based glasses are promising candidates for low-temperature dielectric glass glazes.