Premium
Effect of Potassium Concentration on the Grain Orientation in Bismuth Sodium Potassium Titanate
Author(s) -
Fukuchi Eiichiro,
Kimura Toshio,
Tani Toshihiko,
Takeuch Tsuguto,
Saito Yasuyoshi
Publication year - 2002
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.2002.tb00297.x
Subject(s) - potassium , bismuth titanate , materials science , potassium niobate , ceramic , grain growth , bismuth , grain size , sodium , mineralogy , degree (music) , ferroelectricity , composite material , chemistry , metallurgy , dielectric , physics , optoelectronics , acoustics
Bi 0.5 (Na 1‐ x K x ) 0.5 TiO 3 (BNKT) bulk ceramics with a preferred <100> orientation were prepared using the reactive templated grain‐growth method with platelike Bi 4 Ti 3 O 12 particles as templates for BNKT. The potassium concentration ( x value) had a large effect on the degree of orientation, and highly oriented ceramics were obtained for the specimens with x = 0.10 and x = 0.15, whereas the specimen with x = 0.00 had a small degree of orientation. Increased potassium concentration from x = 0.00 to x = 0.15 decreased the grain‐growth rate and changed the grain shape from irregular to cubic. These factors were responsible for the increased degree of orientation.