Mechanism of Texture Development in Bi0.5(Na,K)0.5TiO3 prepared by the Templated Grain Growth Process
Mechanism of Texture Development in Bi0.5(Na,K)0.5TiO3 prepared by the Templated Grain Growth Process
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DOI：
10.1111/j.1551-2916.2008.02718.x
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发表时间：
2009
影响因子：
3.9
通讯作者：
T. Shoji;Kaori Fuse;Toshio Kimura
中科院分区：
文献类型：
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作者：
T. Shoji;Kaori Fuse;Toshio Kimura
以片状SrBi4Ti4O15和Al_2O_3粉末为模板，以SrTiO_3和Al_2O_3单晶为模板，研究了模板法制备的Bi0.5(Na，K)0.5TiO_3(BNKT)的织构演化机制。这些模板在BNKT矩阵中产生<100>织构。织构演化的机制与模板种类有关。当使用SrBi4Ti4O15和SrTiO3时，在基质和模板颗粒之间形成了新的颗粒(梯形)。平台具有与模板相同的晶体取向。梯田以牺牲基质颗粒为代价生长，导致纹理演变。对于Al_2O_3模板，在基质和模板颗粒之间没有形成平台。相反，基质颗粒直接附着在模板表面。具有特定取向的相界的形成导致了该模板的织构演化。
The mechanisms of texture evolution in Bi0.5(Na,K)0.5TiO3 (BNKT) prepared by the templated grain growth method are examined using platelike SrBi4Ti4O15 and Al2O3 powders and SrTiO3 and Al2O3 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 SrBi4Ti4O15 and SrTiO3 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 Al2O3 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.