NDLI: Magnetic properties of transition metal atoms doped in silicon nanotubes with hexagonal prism structure

Content Provider	IEEE Xplore Digital Library
Author	Jang, Y.-R. Jo, C. Lee, J.I.
Copyright Year	1965
Abstract	Magnetic properties of magnetic transition metals doped in the infinite Si nanotubes (SiNTs) with hexagonal prism structure (Si/sub 12/M/sub n/, M=Fe, Co, Ni, n=1, 2) have been investigated for two different numbers of dopants per hexagonal prism by using the localized basis calculational method. The decrease (increase) of spin-down (spin-up) electrons for the n=2 case results in the increase of magnetic moments compared with the n=1 case. The calculated magnetic moment per dopant Fe atom (2.39 /spl mu//sub B/) is larger than both of the bulk value (2.22 /spl mu//sub B/) and previous result for finite nanotube (1.7 /spl mu//sub B/). For Co and Ni atoms doped in the tube, the magnetic moments are smaller than those of bulk metals. The Si-Si bond lengths for the hexagonal prisms decrease compared with that of the nanotube without transition metals, but there is no dependency on different dopants. The distances between the transition metals and Si atoms decrease as the atomic number of transition metals increases, which is the same trend for the atomic radii of transition metal atoms. The doping of transition metal atoms leads to the increase of the binding energy (BE).
Sponsorship	IEEE Magnetics Society
Starting Page	3118
Ending Page	3120
Page Count	3
File Size	291545
File Format	PDF
ISSN	00189464
Volume Number	41
Issue Number	10
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-10-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Magnetic properties Silicon Atomic measurements Magnetic moments Semiconductor device doping Physics Nanowires Stability Semiconductor nanotubes Orbital calculations transition metal encapsulation Binding energy hexagonal prism structure magnetic moment silicon nanotube
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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