AlN nanorings
- 作者：Junhong Duan ; Shaoguang Yang ; Hongwei Liu ; Jiangfeng Gong ; Hongbo Huang ; Xiaoning Zhao ; Jili Tang ; Rong Zhang and Youwei Du
- 关键词：A1. Crystal morphology ; B1. Nanomaterials ; B1. Nitrides
- 刊名：Journal of Crystal Growth
- 出版年：2005
- 期刊代码：49_00220248
- 类别：ch
- 出版时间：2005
- 卷：283
- 期：3-4
- 页码：291-296
- 文件大小：502 K
摘要
Aluminum nitride nanorings with hexangular crystal structure were first synthesized by evaporating of aluminum alloy in ammonia/nitrogen atmosphere at 1100 °C. The products were characterized by transmission electron microscopy, scanning electron microscopy, FT-IR absorption and Raman scattering. Nanorings with the diameter of about 3 μm are formed by bending nanowires. HRTEM and electron diffraction studies revealed that nanorings are single crystal and the c-axis of the AlN crystal directs along the radial direction of the nanoring. The electrostatic polar charge model is employed in the explanation of the AlN nanoring formation.