Prospective of (BaCa)(ZrTi)O3 Lead-free Piezoelectric Ceramics

Abstract

Piezoelectric ceramics is a functional material that can convert mechanical energy into electrical energy and vice versa. It can find wide applications ranging from our daily life to high-end techniques and dominates a billion-dollar market. For half a century, the working horse of the field has been the polycrystalline PbZr1−xTixO3 (PZT), which is now globally resisted for containing the toxic element lead. In 2009, our group discovered a non-Pb piezoelectric material, (BaCa)(ZrTi)O3 ceramics (BZT-BCT), which exhibits an ultrahigh piezoelectric coefficient d33 of 560–620 pC/N. This result brought extensive interest in the research field and important consequences for the piezoelectric industry that has relied on PZT. In the present paper, we review the recent progress, both experimental and theoretical, in the BZT-BCT ceramics.

Dielectric and Energy Storage Properties of Ba(1−x)CaxZryTi(1−y)O3 (BCZT): A Review

“…For certain applications, the ferroelectrics are rarely used in a chemically pure form and doping is usually employed to achieve the desired results. Different doping usually brings about different consequences, such as acceptor doping to obtain low dielectric losses and donor doping to achieve high piezoelectric coefficients [75]. Therefore, in this section we will see how different doping results in different values of dielectric properties of BCZT.…”

Electrocaloric effect and high energy storage efficiency in lead-free Ba0.95Ca0.05Ti0.89Sn0.11O3 ceramic elaborated by sol–gel method

“…Meanwhile, doping of B sites with Ca 2+ (up to 21%) can reduce these transitions temperatures with a slight change on the Curie point [15]. Accordingly, co-doping in both sites can lead to the formation of the morphotropic phase boundary (MPB) at ambient temperature resulting in the enhancement of dielectric, piezoelectric and electrocaloric properties [7], [16], [17]. Theoretically, in the MPB region, energy barriers become lower, making the polarization rotation and extension process easier [18].…”

Ag-nanoparticles-loaded Ba0.85Ca0.15Ti0.9Zr0.1O3 for multicatalytic dye degradation

“…It is noted that BCZTO has recently been reported for photocatalysis and piezocatalysis [36,37]. BCZTO is one of the potential compositions reported for multiple applications [38]. This composition has been well explored from electrocaloric, energy harvesting, and sensing viewpoints.…”