Grain size effect on piezoelectric and ferroelectric properties of BaTiO3 ceramics

Plastic Deformation of BaTiO3Ceramics by High-pressure Torsion and Changes in Phase Transformations, Optical and Dielectric Properties

“…[32,33] Earlier papers reported that the optimum grain size to achieve high dielectric constants was in the range of 700-1,300 nm. [2,3,5] However, this present work suggests that the optimum grain size can shift even to the nanometer level after severe straining. The increase in the dielectric constant by nanograin formation through HPT processing is consistent with the theoretical models based on elastic field energy and domain wall energy.…”

“…Therefore, the increase in dielectric constant is not due to the effect of dielectric loss. The dielectric constant of 5,000-14,000 after N = 5 is higher than values reported in the literatures, [1][2][3][4][5] suggesting that the current material should be promising for high-capacitance capacitors and for electronic devices that need efficient mechanicalelectric energy conversion, provided that the material can be produced with a reasonable cost.…”

“…Barium titanate, BaTiO 3 (BTO), which belongs to the group of perovskite oxides with the general ABO 3 formula, has received much attention because of its dielectric, [1][2][3][4][5] piezoelectric [1,5,6] and ferroelectric [7,8] properties, as well as its mechanical and chemical stability. [9] Moreover, BTO has been widely investigated for its optical properties, [10] photoluminescence (PL), [11,12] photocatalysis, [13] proton conductivity [14] and phase transformations.…”

Correlation of film thickness to optical band gap of Sol-gel derived Ba0.9Gd0.1TiO3 thin films for optoelectronic applications

“…Barium titanate (BaTiO3) is a ferroelectric material that has gained much attention in recent decades for its excellent electrical and optical properties, and the simplicity of its crystal structure that can adapt variety types of dopant [1][2]. The incorporation of different element as dopant into BaTiO3 has been extensively investigated in order to improve its original properties and extends the areas of application of barium titanate [3][4].…”

Electron Magnetic Resonance of Diluted Solid Solutions of Gd3+ in BaTiO3

“…Barium titanate (BaTiO 3 ) is a traditional piezoelectric material that has been proposed for use in the microelectronics industry after studies revealed that its properties can be changed by controlling grain size 1,2 and by doping with rare earth ions 3 . EMR spectroscopy is a convenient method for studying these impurities within the BaTiO 3 structure.…”