The sublimation growth of AlN fibers: transformations in morphology & fiber direction

被引：18

作者：

Bao, H. Q. ^{[1
]}

Chen, X. L. ^{[1
]}

Li, H. ^{[1
]}

Wang, G. ^{[1
]}

Song, B. ^{[1
]}

Wang, W. J. ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100080, Peoples R China

来源：

APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING | 2009年 / 94卷 / 01期

基金：

国家高技术研究发展计划(863计划); 中国国家自然科学基金;

关键词：

ALUMINUM NITRIDE WHISKERS; FIELD-EMISSION; TEMPERATURE SYNTHESIS; NANOWIRES; CRYSTALS; DEPOSITION; NANOTUBES; STRAIGHT; NANORODS; ALGAN;

D O I：

10.1007/s00339-008-4722-9

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The growth of AlN fibers using sublimation method was investigated in the temperature range from 1600 degrees C to 2000 degrees C. Large-scale AlN fibers are obtained with diameters from 100 nm to 50 mu m and lengths up to several millimeters. The fiber morphology and growth direction are characterized by X-ray diffraction (XRD), field emission scanning electron microscope (SEM), high-resolution transmission electron microscopy (HRTEM), and Raman scattering. The fibers change from wire-like to prism-like in morphology and increase in diameter as rising temperatures, accompanying a transformation in axial direction from [10 (1) over bar0] to [0001]. The transformation in the growth direction is discussed in terms of AlN structure and supersaturation of AlN gas species. These results provide useful information for controlling the growth of large-scale AlN fibers.

引用

页码：173 / 177

页数：5

共 38 条

[31] Growth of silicon carbide nanowires by a microwave heating-assisted physical vapor transport process using group VIII metal catalysts [J].