Effect of lead borosilicate glass addition on the crystallization, ferroelectric and dielectric energy storage properties of Ba0.9995La0.0005TiO3 ceramics

• Published in: Journal of alloys and compounds 2016-12, Vol.688, p.721-728
• Main Authors: Puli, Venkata Sreenivas, Pradhan, Dhiren K., Adireddy, Shiva, Kothakonda, Manish, Katiyar, Ram S., Chrisey, Douglas B.
• Format: Article
• Language: English
• Subjects: Capacitors; Dielectrics; Energy storage,BaTiO3; Glass-ceramics
• ISSN: 0925-8388; 1873-4669
• DOI: 10.1016/j.jallcom.2016.07.025

This article presents the effect of lead-borosilicate glass (65PbO20B2O315SiO2, mol%) (PBS) addition on the structure, microstructure, dielectric, ferroelectric and energy storage properties of Ba0.9995La0.0005TiO3 (BLT) ceramics system has been systematically investigated. XRD analysis revealed the tetragonal (T) phase at room temperature. Addition of PBS glass results in decrease in ferroelectricity and improved breakdown properties. High maximum polarization (Ps∼21.53 μC/cm2) and remnant polarization values (2Pr∼8.75 μC/cm2) were obtained from ferroelectric (P-E) hysteresis loops for the BLT ceramics. Two dielectric anomalies at 420 K and 600 K were observed due to the phase transformation. The glass-ceramics heat treated at 900 °C for 3 h was found to possess optimal properties with breakdown strength of >300 kV/cm and energy storage density of 0.564 J/cm3, which is a promising glass-ceramic ferroelectric capacitor material for high energy storage density dielectrics. [Display omitted] •PbOB2O3SiO2 Ba0.9995La0.0005TiO3 glass-ceramics prepared via conventional synthesis route.•Glass-ceramics have shown ferroelectric hysteresis behavior at room temperature.•Improved dielectric breakdown strength (>300 kV/cm) was observed with increased glass content.•Two dielectric anomalies at 420 K and 600 K were observed due to the phase transformation.•High dielectric constant, low dielectric loss, high breakdown field were observed for Glass-Ceramics.