（Key Lab of Materials Science and Processing ofAnhui Province, School of Materials Science and Engineering, Anhui University of Technology, Ma anshan 243002, China）
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Abstract:
The effect of hydrothermal temperature and time on the formation of the CuGeO 3 nanowire flowers has been analyzed. The results reveal that the hydrothermal temperature plays an essential role in the formation of the CuGeO 3 nanowire flowers. The diameter of CuGeO 3 nanowires increases with the decrease of the hydrothermal temperature when the growth time is 1 h; the monoclinic CuGeO 3 phase disappears and the CuGeO 3 nanowire flowers are composed of pure orthorhombic CuGeO 3 phase. Both the diameter and length of CuGeO 3 nanowires increase with the increase of the growth time, and the sample is composed of free standing CuGeO 3 nanowires when the growth time is increased to 6 h at 250 ℃.