Realizing Super‐High Piezoelectricity and Excellent Fatigue Resistance in Domain‐Engineered Bismuth Titanate Ferroelectrics
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- Xie, Shaoxiong
- 九州大学大学院工学研究院機械工学部門
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- Xu, Qian
- School of Architecture and Civil Engineering, Xihua University
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- 陳, 強
- 九州大学大学院工学研究院機械工学部門
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- Zhu, Jianguo
- College of Materials Science and Engineering, Sichuan University
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- Wang, Qingyuan
- Institute for Advanced Study, Chengdu University
書誌事項
- タイトル別名
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- Realizing Super-High Piezoelectricity and Excellent Fatigue Resistance in Domain-Engineered Bismuth Titanate Ferroelectrics
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説明
Bismuth titanate (BIT) is widely known as one of the most prospective lead-free ferroelectric and piezoelectric materials in advanced high-temperature sensing applications. Despite significant advances in developing BIT ferroelectrics, it still faces major scientific and engineering challenges in realizing super-high performance to meet next-generation high-sensitivity and light-weight applications. Here, a novel ferroelectric domain-engineered BIT ceramic system is conceived that exhibits super-high piezoelectric coefficient (d33 = 38.5 pC N−1) and inverse piezoelectric coefficient (d33* = 46.7 pm V−1) at low electric field as well as excellent fatigue resistance (stable up to 107 cycles). The results reveal that the introduction of high-density layered (001)-type 180° domain walls with flexible polarization rotation features and the formation of small-size multi-domain states with low energy barriers are mainly responsible for the excellent electrical performance. To the best of knowledge, it is the first time to reveal such intriguing domain structures in BIT ceramics in detail, especially from the atomic-scale perspective by using atomic number (Z)-contrast imaging in combination with atomic-resolution polarization mapping. It is believed that this breakthrough conduces to comprehensively understand structural features of ferroelectric domains in BIT ceramics, and also opens a window for future developments of super-high performance in bismuth layer-structured ferroelectrics via domain engineering.
収録刊行物
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- Advanced Functional Materials
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Advanced Functional Materials 34 (18), 2312645-, 2024-01-20
Wiley
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詳細情報 詳細情報について
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- CRID
- 1050865950561860864
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- NII書誌ID
- AA11518753
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- ISSN
- 16163028
- 1616301X
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- HANDLE
- 2324/7162498
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- 本文言語コード
- en
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- 資料種別
- journal article
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- データソース種別
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