Textured ZnO-Based Varistors via Templated Grain Growth

Abstract

Textured ZnO-based varistors were produced by using templated grain growth technique (TGG). Rod-like ZnO particles which used as templates in TGG were synthesized by homogeneous precipitation method from the 0.01 M zinc nitrate and 0.0125 M hexamethylenetetramine (HMT) solutions at 90ºC. The templates were aligned by tape casting of ZnO based aqueous slurries. A modified tape caster with a comb blade was used for the tape casting process. Texture development in the green and sintered samples was investigated by x-ray diffractometer (XRD) and scanning electron microscope (SEM).

Effects of annealing temperature on the structural and optical properties of ZnO hexagonal pyramids

“…ZnO is a low cost material with various industrial applications in manufacturing gas sensors, varistors, Schottky diodes, solar cells, piezoelectric devices, etc. [1][2][3]. ZnO films are required to have high crystalline quality for most applications.…”

The effects of zinc nitrate, zinc acetate and zinc chloride precursors on investigation of structural and optical properties of ZnO thin films

“…Overall, ZnO is of importance for fundamental research, and also relevant for various fields of industrial and high technological applications such as gas sen- * Corresponding author. sors, varistors, piezoelectric transducers, UV light detector and Schottky diodes [1][2][3].…”

Relationship between liquid phase content and the orientation of PMNT ceramics by TGG method

“…An alternate means of texturing a polycrystalline ceramics is known as Templated Grain Growth (TGG) [2][3][4][5] . The TGG process has been demonstrated in a wide variety of systems, including mullite [4] , Sr 0.53 Ba 0.47 Nb 2 O 6 [5] , ZnO [6] and Sr 2 Nb 2 O 7 [7] . In our study, single phase perovskite 0.67PMN-0.33PT powder was selected as the matrix material [8] and (001) plate-like SrTiO 3 particles as template component [9,10] , PMN-PT textured ceramics was prepared by TGG method.…”