PZT (lead zirconate titanate) piezoelectric ceramics have undoubtedly become the most prevalent piezoelectric materials owing to their outstanding properties. In recent years, with the advancement of crystal growth technology, new single-crystal piezoelectric materials have been developed, which have excellent performance and are increasingly in demand for high-end probing applications. However, there are still some shortcomings in the production of monocrystalline materials, such as much higher costs, longer crystal growth cycle, brittleness, uneven distribution of components, etc., which are the limitations in application needed to be overcome.

TGG piezo material technology, also known as textured piezoceramics, is called Template grain growth (TGG) piezoceramics. The core of this technology is to arrange the neatly organized micron flake single crystal template in the piezoelectric material, and utilize the technology of multilayer ceramics to stack and cut the piezoelectric ceramic strip with the template into green raw components, and induce the irregular polycrystalline piezoelectric material to grow in a directional arrangement during the sintering process, so that its characteristics are remarkably improved and similar to the performance of single crystal, and the low production cost makes it feasible and practical to produce in large volume.

There are also quite a few journal articles available regarding the use and review of TGG technology to produce lead-free piezoelectric ceramics, which can significantly improve their piezoelectric characteristics, and even comparable to current lead-containing PZT.