Mechanism of Biub>0.5ub>Naub>0.5ub>TiOub>3ub> and Biub>4.5ub>Naub>0.5ub>Tiub>4ub>Oub>15ub> template synthesis during topochemical microcrystal conversion and texturing of Biub>0.5ub>(Naub>0.8ub>Kub>0.2ub>)ub>0.5ub>TiOub>3ub> piezoelectric ceramics

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• 作者：Hyun Ae Cha ^{hacha@kims.re.kr" class="auth_mail" title="E-mail the corresponding author} ; Young-Kuk Kim ^{voice21@kims.re.kr" class="auth_mail" title="E-mail the corresponding author} ; Jae-Ho Jeon ; ^{jjh@kims.re.kr" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Topochemical Microcrystal Conversion ; Bi0.5Na0.5TiO3 ; Bi4.5Na0.5Ti4O15 ; Bi0.5(Na0.8K0.2)0.5TiO3 ; Reactive-Templated Grain Growth
• 刊名：Journal of the European Ceramic Society
• 出版年：2017
• 出版时间：March 2017
• 年：2017
• 卷：37
• 期：3
• 页码：967-974
• 全文大小：7143 K

文摘

The mechanism by which Biub>0.5ub>Naub>0.5ub>TiOub>3ub> and Biub>4.5ub>Naub>0.5ub>Tiub>4ub>Oub>15ub> templates are synthesized via a topochemical microcrystal conversion method using Biub>4ub>Tiub>3ub>Oub>12ub> precursor and TiOub>2ub> particles was investigated based on their crystal structures. The Biub>0.5ub>Naub>0.5ub>TiOub>3ub> template consisted of a mixture of plate-like and equiaxed particles, whereas the Biub>4.5ub>Naub>0.5ub>Tiub>4ub>Oub>15ub> template consisted only of plate-like particles. The size of the plate-like and equiaxed particles was dependent on the size of the Biub>4ub>Tiub>3ub>Oub>12ub> precursor and TiOub>2ub> particles, respectively. The Lotgering factor and piezoelectric constant of textured Biub>0.5ub>(Naub>0.8ub>Kub>0.2ub>)ub>0.5ub>TiOub>3ub> ceramics prepared using the Biub>0.5ub>Naub>0.5ub>TiOub>3ub> template were lower than those of the textured Biub>0.5ub>(Naub>0.8ub>Kub>0.2ub>)ub>0.5ub>TiOub>3ub> ceramics prepared from the Biub>4.5ub>Naub>0.5ub>Tiub>4ub>Oub>15ub> template. This can be attributed to the small amount of plate-like particles in the Biub>0.5ub>Naub>0.5ub>TiOub>3ub> template caused by the inevitable co-existence of equiaxed particles.