Effect of BiMO3 (M=Al, In, Y, Sm, Nd, and La) doping on the dielectric properties of BaTiO3 ceramics. Issue 13 (September 2017)

• Record Type: Journal Article
• Authors: Wei, Meng; Zhang, Jihua; Wu, Kaituo; Chen, Hongwei; Yang, Chuanren
• Is Part Of: Ceramics international. Volume 43:Issue 13(2017)
• Page Start: 9593
• Page End: 9599
• Publication Date: 2017-09
• Subjects: BaTiO3 -- Dielectric properties -- Energy density -- Ionic radius -- Ceramics; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2017.03.139
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: In this study, in order to enhance the energy storage density, 10% BiMO3 doping is performed in BaTiO3 ceramics (M=Al, In, Y, Sm, Nd, La) by a traditional solid-state method. The effects of different M 3+ radii on the structural characteristics, dielectric properties, and energy storage are investigated systematically. The locations of the M-ions gradually shift from B-site substitutions to A-site substitutions with the increase in the ionic radius, which affect the structural characteristics and the dielectric properties. When 80M3+ <95.5 pm, the ceramic has a cubic phase which shows the highest energy density; while out of this range, the dielectric properties of the ceramics are degraded. Specially, the change rate of permittivity of the Sm substituted composition reaches 70% at 100 kV/cm, which might be good for high frequency tunable device application. Typically, combined with the suppression of nonlinearity, polarization maximum (Pm ) and remnant polarization (Pr ), 0.9BaTiO3 –0.1BiInO3 exhibits the maximum energy density of 0.753 J/cm 3 and the highest energy efficiency of 89.4%, which exhibits slim P-E hysteresis loops for energy storage applications.