| 铌酸钾钠无铅压电纳米棒阵列的制备 |
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| 作者姓名： | 程丽乾 成慧 苗翼滢 孙怡文 张梓佩 |
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| 作者单位： | 中国矿业大学(北京)机电与信息工程学院，北京 100083 |
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| 基金项目： | 国家自然科学基金青年基金51602345煤炭资源与安全开采国家重点实验室开放课题SKLCRSM19KFA13清华大学先进材料教育部重点实验室开放课题XJCL201910中央高校基本科研业务费专项资金2016QJ01北京市大学生创新训练C201904407 |
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| 摘 要： | 针对一维KNN纳米结构的研究还存在取向生长较难、产物压电性能有待提高等问题，本文采用水热法与掺Nb的钛酸锶(SrTiO3)(NSTO)衬底辅助相结合的方式，通过控制水热反应温度、反应物五氧化二铌(Nb2O5)浓度以及水热反应时间实现高质量的KNN纳米棒阵列的取向生长。研究结果表明，在水热反应温度为190 ℃、Nb2O5浓度为40 mL/g、水热反应时间为18 h时，获得取向单一、结晶性好且压电响应明显的KNN纳米棒阵列。此研究可为无铅压电KNN晶体在微纳尺寸器件制备及能量回收等方面提供借鉴。
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| 关 键 词： | 无铅压电 铌酸钾钠 纳米棒阵列 一维材料 |
| 收稿时间： | 2020-04-29 |
A study on synthesis of lead-free piezoelectric (K,Na)NbO3 nanorod arrays |
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| Affiliation: | School of Mechanical electronic and Information Engineering, China University of Mining and Technology-Beijing, Beijing 100083 |
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| Abstract: | As one of the lead-free piezoelectric systems, potassium sodium niobate (K, Na)NbO3, abbreviated as KNN] has been a research interest due to its high piezoelectric property, high Curie temperature as well as the tailored phase structures. However, there are still some problems in the study of one dimensional (1D) KNN structures. For instance, the orientation growth of crystals is difficult to be controlled, the piezoelectric properties of the product should be further enhanced. In this paper, the hydrothermal synthesis method was applied to fabricate the 1D KNN structures on the Nb-doped SrTiO3 (NSTO) substrate. The hydrothermal temperature, Nb2O5 concentration and the hydrothermal time were studied, respectively, and the oriented KNN nanorod arrays (NRAs) with high quality were achieved. The results show that the KNN NRAs with single orientation, good crystallinity and high piezoelectric response can be obtained when the hydrothermal temperature is 190 ℃, the Nb2O5 concentration is 40 mL/g, and the reaction time is 18 h, respectively. |
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