array(2) { ["lab"]=> string(3) "879" ["publication"]=> string(4) "6528" } Ferromagnetic Si/Mn27Si47 core/shell nanowire arrays - 师文生 课题组 | LabXing

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简介 应用光电纳米材料与器件

大学 中国科学院理化技术研究所 / 光电信息材料与器件
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Ferromagnetic Si/Mn27Si47 core/shell nanowire arrays

2011
期刊 Journal of Applied Physics
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Arrays of Si/Mn27Si47 core/shell nanowire (NW) are synthesized by an in situ reaction between Si NW arrays and MnCl2. Results from XRD and transition electron microscopy (TEM) indicated that the shells have single-crystalline tetragonal Mn27Si47 structure with the axial direction perpendicular to (204) face. The thickness of the Mn27Si47 shell can be controlled by adjusting the growth conditions. The Si/Mn27Si47 NW arrays exhibited enhanced ferromagnetism compared with the bulk higher manganese silicides (HMS). The Curie temperature of the Si/Mn27Si47 core/shell NW arrays is about 150 K, which is much higher than that of the bulk HMS. Due to the excellent compatibility of Si/Mn27Si47 with Si-based nanowire devices, these core/shell structures should have wide potential applications in the Si-based self-assembly nanowire devices.

  • 卷 109
  • 期 4
  • 页码 044305-044305-4
  • AIP Publishing
  • ISSN: 0021-8979
  • DOI: 10.1063/1.3548939
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