论文信息 - Dependence of the Crystal Structure on Particle Size in Barium Titanate

Dependence of the Crystal Structure on Particle Size in Barium Titanate

The authors discuss the effect of the sample particle size on the crystal structure and the Curie temperature of BaTiO/sub 3/ powder investigated in the particle size range 0.1 to 1.0 {mu}m. The transformation from tetragonal to cubic symmetry occurs at a critical particle size of 0.12 {mu}m at room temperature, and the Curie temperature drops below room temperature at the critical particle size.

[1] G. Samara. Pressure and Temperature Dependences of the Dielectric Properties of the Perovskites BaTi O 3 and SrTi O 3 , 1966 .

[2] Okada,et al. Size effect on the ferroelectric phase transition in PbTiO3 ultrafine particles. , 1988, Physical review. B, Condensed matter.

[3] G. Samara. Pressure and temperature dependence of the dielectric properties and phase transitions of the ferroelectric perovskites: PbTiO3 and BaTiO3 , 1971 .