Characterization of thick bismuth ferrite-lead titanate films processed by tape casting and templated grain growth

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• 作者：Meghdad Palizdar^a ; ^f ; ^{Palizdar@cpg-gmbh.de" class="auth_mail" title="E-mail the corresponding author} ; Chris M. Fancher^b ; Tim P. Comyn^a ; Tim J. Stevenson^a ; Stephen F. Poterala^c ; Gary L. Messing^c ; Ender Suvaci^d ; Annette P. Kleppe^e ; Andrew J. Jephcoat^e ; Andrew J. Bell^a
• 关键词：Ferroelectric materials ; Tape casting ; Texture ; Synchrotron
• 刊名：Journal of the European Ceramic Society
• 出版年：2015
• 出版时间：December 2015
• 年：2015
• 卷：35
• 期：16
• 页码：4453-4458
• 全文大小：1354 K

文摘

The templated grain growth technique was used to synthesise textured 60BiFeO₃–40PbTiO₃ (60:40BFPT). Both Aurivillius (Bi₄Ti₃O₁₂, PbBi₄Ti₄O₁₅) and perovskite templates (BaTiO₃, SrTiO₃) were used to prepare 60:40BFPT. Only BaTiO₃ templates were found to successful impart a texture to the ceramic matrix. In the case of perovskite templates, ferroelectricity was evident from saturated polarisation hysteresis loops. Saturated polarisation loops were achieved due to the substitution of Ba²⁺ or Sr²⁺, which reduces the coercive field. SrTiO₃ and BaTiO₃ templated ceramics showed remanent polarisation of 30 and 36 渭C/cm², respectively. Aurivillius templates did not generate ferroelectric materials. Because of their high chemical stability in this system, BaTiO₃ templates appear to be the best candidate for fabricating textured BFPT by the reactive templated grain growth method.