Magnetic properties of diluted magnetic semiconductor nanowires Co(x)Sn(1-x)O(2)

作者：Ge Shihui^*; Yin Jinglei; Zhang Huaxin

来源：Journal of Applied Physics, 2008, 104(6): 063906.

DOI：10.1063/1.2979713

SnO(2) and Co(x)Sn(1-x)O(2) (x=0.013-0.22) nanowires were fabricated using a catalyzer assisted chemical vapor deposition. The as-grown nanowires are homogeneous along the wire length with diameters ranging from 33 to 250 nm and lengths greater than 15 mu m. The morphology of the nanowires is sensitive to the fabrication conditions such as selection of catalyzer, flux rates of 02 and Ar, as well as deposition temperature. The growth mechanism of nanowires can be ascribed to a vapor-liquid-solid [R. S. Wagner and W. C. Ellis, Appl. Phys. Lett. 4, 89 (1964)] process. All Co(x)Sn(1-x)O(2) nanowires exhibit room temperature ferromagnetism. Magnetic moment per Co ion reaches 1.8 mu(B) for the sample of x = 0.016 and sharply decreases as x is increased. Nanowires are single crystals and no Co clusters or oxides are found for all samples, implying that the observed ferromagnetism is intrinsic. 0 2008 American Institute of Physics. [DOI: 10.1063/1.2979713]

• 出版日期2008-9-15
• 单位兰州大学