Itinerant Helimagnetic Single-Crystalline MnSi Nanowires

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We report the synthesis of free-standing MnSi nanowires via a vapor transport method with no catalyst and measurements of their electrical and magnetic properties for the first time. The single-crystalline MnSi nanowire ensemble with a simple cubic (B20) crystal structure shows itinerant helimagnetic properties with a T(c) of about 30 K. A single MnSi nanowire device was fabricated by a new method using photolithography and a nanomanipulator that produces good ohmic contacts. The single-nanowire device measurements provide large (20%) negative magnetoresistance and very low electrical resistivity of 544 mu Omega cm for the MnSi nanowire.
Publisher
AMER CHEMICAL SOC
Issue Date
2010-05
Language
English
Article Type
Article
Keywords

ONE-DIMENSIONAL NANOSTRUCTURES; HIGHER MANGANESE SILICIDE; MAGNETIC-PROPERTIES; COSI NANOWIRES; GROWTH; PHASE; METAL; FERROMAGNETS; MN4SI7; OXIDES

Citation

ACS NANO, v.4, no.5, pp.2569 - 2576

ISSN
1936-0851
DOI
10.1021/nn901653q
URI
http://hdl.handle.net/10203/96544
Appears in Collection
EE-Journal Papers(저널논문)CH-Journal Papers(저널논문)
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