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Bulk growth, structural and electrical properties of (1-x)Na0.5Bi0.5TiO3-xBaTiO3 Piezoelectric single crystals by Top Seeded Solution Growth Method
Materials Letters ( IF 3 ) Pub Date : 2020-10-01 , DOI: 10.1016/j.matlet.2020.128248
M. William Carry , K. Ramachandran , Arumugam Raja , Muthu Senthil Pandian , P. Ramasamy

Abstract The solid solution of 0.94(Na0.5Bi0.5)TiO3-0.06BaTiO3 NBBT94/06 is a promising material to replace Lead (Pb) based piezoelectric materials. The bulk NBBT 94/06 single crystal was successfully grown by the top-seeded solution growth (TSSG) method. Lead-free piezoelectric NBBT single crystals with a composition across the morphotropic phase boundary (MPB) have been grown by the TSSG method. NBBT 94/06 single crystal, encompassing the rhombohedral to largely monoclinic phase covering the MPB region was grown by the TSSG method. The crystal structure and its electrical properties were investigated. The Laue diffraction pattern confirms that the grown crystal is a single crystal. Rietveld refinement studies disclose the existence of a phase boundary between Monoclinic (Cc) and Rhombohedral (R3c) phases near the MPB. The depolarization temperature (Td), piezoelectric coefficient (d33) and ferroelectric properties were enhanced at MPB.

中文翻译:

(1-x)Na0.5Bi0.5TiO3-xBaTiO3压电单晶的体生长、结构和电学性质的顶部种子溶液生长法

摘要 0.94(Na0.5Bi0.5)TiO3-0.06BaTiO3 NBBT94/06固溶体是一种有望替代铅(Pb)基压电材料的材料。块状 NBBT 94/06 单晶通过顶部种子溶液生长 (TSSG) 方法成功生长。已通过 TSSG 方法生长了成分跨越同向相界 (MPB) 的无铅压电 NBBT 单晶。NBBT 94/06 单晶,包括菱形到主要单斜相,覆盖 MPB 区域,是通过 TSSG 方法生长的。对其晶体结构和电学性质进行了研究。劳厄衍射图证实生长的晶体是单晶。Rietveld 细化研究揭示了 MPB 附近的单斜 (Cc) 和菱面体 (R3c) 相之间存在相界。
更新日期:2020-10-01
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