Bi3.15Nd0.85Ti3O12纳米纤维的压电响应和居里温度
Piezoelectric response and Curie temperature from Bi3.15Nd0.85Ti3O12 nanofibers
采用溶胶-凝胶电纺法制备了半径为30-200纳米的Bi3.15Nd0.85Ti3O12 (BNT)纳米纤维，同时为了对比也制备了BNT薄膜。利用扫描电子显微镜、X射线衍射和拉曼光谱研究了样品的结构。通过热分析仪和扫描探针显微镜对样品的相变和压电性能进行了分析。结果发现BNT纳米纤维的居里温度和压电系数比BNT薄膜和块体的都高，基于朗道理论探讨了其相关物理机制。
Bi3.15Nd0.85Ti3O12 (BNT) nanofibers with radiuses in the range of 30-200 nm were prepared using electrospinning and sol-gel method, and thin films were synthesized as well for comparison. Scanning electron microscopy, x-ray diffraction and Raman spectroscopy were used to reveal the structure of the samples. The phase transition and piezoelectric characteristics of the samples were demonstrated by thermal analysis and scanning probe microscopy. It was found that the Curie temperature and piezoelectric coefficient of BNT nanofibers are higher than those of films and bulks. The relevant physical mechanisms were discussed based on the Landau-Ginzburg-Devonshire theory.
王金斌、钟向丽、廖敏
物理学材料科学
铁电纳米纤维静电纺丝电学性能
ferroelectric nanofiberelectrospinningelectrical properties
王金斌,钟向丽,廖敏.Bi3.15Nd0.85Ti3O12纳米纤维的压电响应和居里温度[EB/OL].(2010-08-30)[2025-08-16].http://www.paper.edu.cn/releasepaper/content/201008-437.点此复制
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