Title :
Particle size dependence of ferro- and antiferroelectricity
Author :
Yamakawa, Toshiaki ; Uchino, Kenji
Author_Institution :
Titan Kogyo Kabushiki Kaisha, Yamaguchi, Japan
Abstract :
The authors deal with the particle size dependence of the crystallographic structure and Curie/Neel temperature in powder samples. Ferroelectric Ba0.9Sr0.1TiO3 and antiferroelectric PbZrO3 were selected for this investigation. The phase transition temperature TC in the ferroelectric decreased with decreasing particle size, while TN in the antiferroelectric changed insensitively with particle size. This dependence may mainly be caused by the effective surface tensional stress estimated by P=2γ/R, where γ is the surface tension (~50-67 N/m) and R is the radius of the particle
Keywords :
Neel temperature; antiferroelectric materials; barium compounds; ferroelectric Curie temperature; ferroelectric materials; lead compounds; particle size; strontium compounds; Ba0.9Sr0.1TiO3; Curie temperature; Neel temperature; PbZrO3; antiferroelectricity; crystallographic structure; effective surface tensional stress; ferroelectricity; particle size dependence; phase transition temperature; powder samples; surface tension; Lattices; Magnetic materials; Photonic crystals; Powders; Surface tension; TV; Temperature dependence;
Conference_Titel :
Applications of Ferroelectrics, 1990., IEEE 7th International Symposium on
Conference_Location :
Urbana-Champaign, IL
Print_ISBN :
0-7803-0190-0
DOI :
10.1109/ISAF.1990.200326
