Synergistic contributions of the poling field-induced changes in local structure on the piezoelectric properties of modified BaTiO3 system
學年 113
學期 1
出版（發表）日期 2025-01-20
作品名稱 Synergistic contributions of the poling field-induced changes in local structure on the piezoelectric properties of modified BaTiO3 system
作品名稱（其他語言）
著者 Pranab Kumar Roy; Thanigai Arul Kumaravelu; Chiranjit Roy; Ta Thi Thuy Nga; Jeng-Lung Chen; Chung-Li Dong; Pattukkannu Murugavel
單位
出版者
著錄名稱、卷期、頁數 Journal of Physics D: Applied Physics 58(3), 035307
摘要 Local structural heterogeneity is a key factor in improving the piezoelectric properties of non-centrosymmetric piezoelectric systems. This work investigates electric field-induced structural and microstructural changes at localized and average scales to elucidate the structure-property correlations that enhance piezoelectric performance in Sn-doped BaTiO3 systems exhibiting coexisting phase boundaries. Despite showing field-induced structural phase transformation, the sample displays variations in piezocoefficient values with the nature of phase boundary compositions. Raman spectroscopy measurements reveal that the TiO6/SnO6 octahedra near the tetragonal-orthorhombic phase boundary exhibit significantly greater poling field-induced structural heterogeneities in local structure compared to those near the orthorhombic-cubic phase boundary. X-ray absorption spectroscopic results on Ti and Sn K-edge in unpoled and poled samples reveal that the dipolar contribution responsible for the piezoelectricity originates from field-induced distortion associated with both TiO6 and SnO6 octahedra. Near the vicinity of the tetragonal-orthorhombic phase boundary, both the TiO6 and SnO6 contributions are cumulative and exhibit better piezoelectricity. On the other hand, at the orthorhombic-cubic phase boundary, the dipolar contributions from these octahedra are counterintuitive, resulting in a reduction of piezoelectricity. These results could provide a pathway to design materials with an enhanced piezoelectric response by considering various phase boundary aspects before applying a poling field prior to making them piezoactive.
關鍵字
語言 en
ISSN 0022-3727; 1361-6463
期刊性質 國外
收錄於 SCI
產學合作
通訊作者
審稿制度 是
國別 GBR
公開徵稿
出版型式 ,電子版,紙本
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機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/129527 )