Title :
Influence of particle size on the crystalline structure and both the sintering and electrical properties of barium titanate
Author :
Criado, J.M. ; Dianez, M.J. ; Gotor, F.J. ; Real, C. ; Jimenez, F. ; Ramos, S. ; Del Cerro, J.
Author_Institution :
Mater. Sci. Inst., Sevilla, Spain
Abstract :
The constant rate thermal analysis method has been used to obtain barium titanate (BT) powder of very small grain size (diameter 0.07 μm). Both a crystallographic and a dielectric constant study were carried out on samples sintered at different temperatures. It was found that the stabilization of the BT cubic phase depends on the coherently diffracting domain size, D, rather than on the particle size. At room temperature the cubic phase is stable for values of D lower than 250 Å
Keywords :
barium compounds; crystal atomic structure of inorganic compounds; electric domains; ferroelectric materials; grain size; particle size; permittivity; sintering; thermal analysis; 0.07 micron; 20 degC; 250 Å; BT cubic phase; BaTiO3; coherently diffracting domain size; constant rate thermal analysis method; crystalline structure; dielectric constant study; electrical properties; grain size; particle size; powder; room temperature; sintering; stabilization; titanate; Barium; Crystallization; Dielectric constant; Electrical capacitance tomography; Grain size; Materials science and technology; Physics; Powders; Temperature dependence; Titanium compounds;
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.1990.200195
