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Origin of ferromagnetism of MnSi 1.7 nanoparticles in Si: First-principles calculations

Origin of ferromagnetism of MnSi 1.7 nanoparticles in Si: First-principles calculations The origin of the magnetism of MnSi 1.7 nanoparticles in Si is investigated using the first-principles calculations: bulk and interface effects are considered. The bulk magnetic property is expected to be affected by stoichiometry, strain, and charge accumulation. Stoichiometry and charge accumulation induce a ferromagnetic state, and strain stabilizes the ferromagnetic state. Another factor, the MnSi 1.7 / Si interface formation, is seen as triggering ferromagnetism strongly localized at the interface. These two mechanisms are shown to be related to the experimentally determined hard and soft components, respectively. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Physical Review B American Physical Society (APS)

Origin of ferromagnetism of MnSi 1.7 nanoparticles in Si: First-principles calculations

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Publisher
American Physical Society (APS)
Copyright
Copyright © 2008 The American Physical Society
ISSN
1550-235X
DOI
10.1103/PhysRevB.78.045307
Publisher site
See Article on Publisher Site

Abstract

The origin of the magnetism of MnSi 1.7 nanoparticles in Si is investigated using the first-principles calculations: bulk and interface effects are considered. The bulk magnetic property is expected to be affected by stoichiometry, strain, and charge accumulation. Stoichiometry and charge accumulation induce a ferromagnetic state, and strain stabilizes the ferromagnetic state. Another factor, the MnSi 1.7 / Si interface formation, is seen as triggering ferromagnetism strongly localized at the interface. These two mechanisms are shown to be related to the experimentally determined hard and soft components, respectively.

Journal

Physical Review BAmerican Physical Society (APS)

Published: Jul 15, 2008

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