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Mechanism of Texture Development in Bi 0.5 (Na,K) 0.5 TiO 3 prepared by the Templated Grain Growth Process
Author(s) -
Shoji Takeshi,
Fuse Kaori,
Kimura Toshio
Publication year - 2009
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.1551-2916.2008.02718.x
Subject(s) - texture (cosmology) , template , materials science , terrace (agriculture) , grain boundary , matrix (chemical analysis) , grain growth , crystallography , phase (matter) , mineralogy , nanotechnology , grain size , metallurgy , microstructure , composite material , geology , chemistry , computer science , artificial intelligence , archaeology , organic chemistry , image (mathematics) , history
The mechanisms of texture evolution in Bi 0.5 (Na,K) 0.5 TiO 3 (BNKT) prepared by the templated grain growth method are examined using platelike SrBi 4 Ti 4 O 15 and Al 2 O 3 powders and SrTiO 3 and Al 2 O 3 single crystals as templates. These templates give rise to a 〈100〉 texture in the BNKT matrix. The mechanism of texture evolution is dependent on the template species. When SrBi 4 Ti 4 O 15 and SrTiO 3 are used, a new grain (terrace) forms between the matrix and the template grains. The terrace has the same crystallographic orientation as the template. The terrace grows at the expense of the matrix grains, resulting in texture evolution. For the Al 2 O 3 template, no terrace forms between the matrix and the template grains. Instead, the matrix grains directly attach to the template surface. The formation of a phase boundary with a specific orientation gives rise to texture evolution for this template.