Synthesis of tetragonal flake-like magnesium titanate nanocrystallites

Synthesis and characterization of Ba0.5Sr0.5TiO3 nanoparticles

“…In our work stearic acid was used as a solvent, the synthesis temperature to obtain high-purity BST was dramatically decreased down to 550 1C. The characteristic of the SAG system may elucidate its low synthesis temperature of BST, i.e., stearic acid has long chain which can inhibit crystalline agglomeration and as a surfactant to possess some structure control functions [10][11][12]. At the same time, the formation of phase of barium carbonate and Ba 0.5 Sr 0.5 TiO 3 at low temperature may affect each other and result in a low growth rate of Ba 0.5 Sr 0.5 TiO 3 crystallites even with increasing temperature.…”

“…However, among these methods, sol-gel process is a favorable method for its mild synthesis of BST nanoparticles with high purity and homogeneity. As one of the sol-gel processes, stearic acid gel (SAG) method has many distinctive advantages to prepare nanoparticles of BaTiO 3 and tetragonal flake-like nanocrystallites of MgTiO 3 [10][11][12], such as no Ba and Ti losses, without generating hazardous wastes of halide anions and alkali-metal cations, easy control of Ba and Ti stoichiometric ratio, few influencing factors and low cost in comparison with other sol-gel methods.…”

Synthesis of BaTi2O5 powders by stearic acid gel method

“…In this work, the stearic acid gel (SAG) method was employed to prepare BaTi 2 O 5 powders, which allows us to give a possible control over the crystalline shape and size due to the fact that stearic acid has long chain to suppress crystalline agglomeration and is a surfactant to possess some structure control functions [9][10][11]. The current results show that the SAG method can produce BaTi 2 O 5 even at very low temperature about 600 1C.…”

Microwave dielectric properties of H3BO3–CuO co-doped 0. 85BaTi4O9–0.15BaZn2Ti4O11 ceramics

“…Microstructure observation was conducted of samples by using scanning electron microscopy (SEM, FEI Inspect F, the United Kingdom). The dielectric characteristics at microwave frequencies were measured by the Hakki-Coleman dielectric resonator method in the TE011 mode using a network analyzer [15] (Agilent Technologies E5071C, the United States) and a temperature chamber (DELTA 9023, Delta Design, USA).…”