The dielectric and electrical modulus properties of Ba(Al0.5Nb0.5)xTi1-xO3 ceramics

• Published in: Journal of ceramic processing research pp. 300 - 305
• Main Authors: R.F. Niu, D.P. Wang, Z.H. Huang, W.T. Wang
• Format: Journal Article
• Language: English
• Published: 청정에너지연구소 01.04.2024
• Subjects: 재료공학
• ISSN: 1229-9162; 2672-152X
• DOI: 10.36410/jcpr.2024.25.2.300

In this work, a series of BaTiO3-based ceramic materials, Ba(Al0.5Nb0.5)xTi1-xO3 (x = 0, 0.04, 0.06, 0.08), was synthesized usinga standard solid-state reaction technique. In the temperature range of 100~380 K, the frequency-dependent dielectric andelectrical modulus properties were studied. A colossal dielectric permittivity (>1.5×104) and low dielectric loss (< 0.01) weredemonstrated at the optimal doping concentration x = 0.04. The observed dielectric behavior of Ba(Al0.5Nb0.5)xTi1-xO3 ceramicscan be attributed to the Universal Dielectric Response. The complex electrical modulus spectra indicate a significant decreasein capacitance and permittivity of the grains with increasing co-doping concentration. Our results provide insight into the roleof donor and acceptor co-doping on the properties of BaTiO3-based ceramics, which is important for their use in dielectric andenergy storage applications. KCI Citation Count: 0