Magnetic iron silicide nanowires on Si(110)

被引:74
作者
Liang, S [1 ]
Islam, R
Smith, DJ
Bennett, PA
O'Brien, JR
Taylor, B
机构
[1] Arizona State Univ, Sci & Engn Mat Program, Tempe, AZ 85287 USA
[2] Arizona State Univ, Dept Phys & Astron, Tempe, AZ 85287 USA
[3] Arizona State Univ, Ctr Solid State Sci, Tempe, AZ 85287 USA
[4] Quantum Design, San Diego, CA 92121 USA
[5] Univ Calif San Diego, Dept Phys, La Jolla, CA 92093 USA
基金
美国国家科学基金会;
关键词
D O I
10.1063/1.2185610
中图分类号
O59 [应用物理学];
学科分类号
摘要
Self-assembled iron silicide nanowires were formed by depositing 1 ML of Fe onto Si(110) at 700 degrees C in ultrahigh vacuum. The nanowires have average dimensions of 5 nm high x10 nm wide x mu m long, as measured with ex situ atomic force microscopy. High-resolution electron microscopy identifies the crystal structure as cubic FeSi2 with orientation FeSi2((1) over bar 11)//Si(1 (1) over bar1), FeSi2 < 110 >//Si < 110 >. Magnetometer measurements show a magnetic moment of 0.3 Bohr magneton per iron atom at 2 K. This magnetic property in metastable cubic FeSi2 nanowires opens up the possibility for high-density data storage and logic applications. (c) 2006 American Institute of Physics.
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页数:3
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