Structure and electrical properties of BCZT ceramics derived from microwave-assisted sol–gel-hydrothermal synthesized powders

Abstract

A novel microwave-assisted sol–gel-hydrothermal method was employed to rapidly synthesize Ba0.85Ca0.15Zr0.1Ti0.9O3 (BCZT) powders. The effects of reaction time on the structure, crystallinity, purity and morphology of the products were investigated. The results of XRD, FTIR, SEM and TEM indicated that BCZT powders could be obtained in even 60 min at a low synthesis temperature of 180 °C, which were well-crystallized with stoichiometric composition and uniform grain size (~ 85 nm). BCZT ceramic derived from the rapidly-synthesized powders had a dense microstructure and good electrical properties (εm = 9579, d33 = 496 pC/N, 2Pr = 25.22 µC/cm2, 2Ec = 7.52 kV/cm). The significant electrical properties were closely related to the high activity of the BCZT powders, resulting from the rapid microwave-assisted sol–gel-hydrothermal process.

Direct and converse piezoelectricity of thickness tuned BCZT ceramics: toward efficient bilayered magnetoelectric devices

“…Therefore, we focus on another well-known lead-free polycrystalline piezoceramics, 0.5(Ba 0.7 Ca 0.3 )TiO 3 -0.5Ba(Ti 0.8 Zr 0.2 )O 3 (BCZT) in the present work. This composition of BCZT is well-known to be an excellent MPB composition thereby rendering very high piezoelectricity [9][10][11][12]. Furthermore, the usage of this material in a wide variety of technological applications such as energy harvesting [13], energy storage [14], magnetoelectric applications [15], catalytic activity [16], and many others has made it very worthy of investigation in recent times.…”

Preparation, Characterization and Dielectric Properties of Alginate-Based Composite Films Containing Lithium Silver Oxide Nanoparticles

“…The films are made by using solution casting, and are incorporated with lithium silver oxide (LAO) NPs. Because of the NPs used in this study are synthesized by using the hydrothermal process, not only can the NPs be attained at low cost but more precise control over the particle size can be achieved ( Ji et al, 2019 ; Ji et al, 2020 ). To the best of our knowledge, this is one of the first studies reporting the hydrothermal synthesis of LAO NPs and the use of LAO NPs for the preparation of SA-based composite films with good dielectric properties.…”

Confocal Raman Microscopy, Synchrotron X-ray Diffraction, and Photoacoustic Study of Ba0.85Ca0.15Ti0.90Zr0.10O3: Understanding Structural and Microstructural Response to the Electric Field

“…This was found residing in the synergic combination of the narrow temperature range of stability of the macroscopic orthorhombic phase near 300 K, and the flatness of the free energy associated with this phase, which allows large fluctuations of the polarization around its equilibrium value . Still, some reports, may be due the nonresolved T–O or O–R transitions by dielectric or structural measurements, consider only the coexistence of T and R symmetries in BZT-BCT. , Therefore, the symmetries in this system are still a matter of scientific discussion.…”

“…16 Still, some reports, may be due the nonresolved T− O or O−R transitions by dielectric or structural measurements, consider only the coexistence of T and R symmetries in BZT-BCT. 17,18 Therefore, the symmetries in this system are still a matter of scientific discussion.…”