Title :
Fabrication of textured Bi4Ti3O12 by templated grain growth
Author :
Horn, J.A. ; Zhang, S.C. ; Selvaraj, U. ; Messing, G.L. ; Trolier-McKinstry, S. ; Yokoyama, M.
Author_Institution :
Pennsylvania State Univ., University Park, PA, USA
Abstract :
Dense, textured Bi4Ti3O12 was produced by templated grain growth (TGG). Phase pure nanosized Bi4 Ti3O12 powder was prepared by coprecipitation of an aqueous solution of Bi2O3 and TiO(OH)Cl. Plate-like particles with aspect ratios of 6-60 were obtained by the molten salt method at 1100°C. The plate-like particles were dispersed in the calcined powder and oriented by tape casting and laminating. The laminates were sintered from 900-1100°C to obtained textured ceramics up to 96% dense. Texture development was investigated by X-ray diffraction, and dielectric measurements were made on both templated and untemplated samples
Keywords :
bismuth compounds; ceramics; ferroelectric materials; grain growth; laminates; nanostructured materials; powder technology; precipitation (physical chemistry); sintering; texture; 900 to 1100 C; Bi4Ti3O12; X-ray diffraction; aspect ratio; calcination; coprecipitation; dielectric measurement; dispersion; fabrication; laminate; molten salt method; nanosized powder; plate-like particles; tape casting; templated grain growth; textured ceramic; Bismuth; Ceramics; Dielectric measurements; Fabrication; Ferroelectric materials; Laminates; Powders; Tape casting; Titanium compounds; X-ray diffraction;
Conference_Titel :
Applications of Ferroelectrics, 1996. ISAF '96., Proceedings of the Tenth IEEE International Symposium on
Conference_Location :
East Brunswick, NJ
Print_ISBN :
0-7803-3355-1
DOI :
10.1109/ISAF.1996.598182
