Compositional variation of magnetic moment, magnetic anisotropy energy and coercivity in Fe1−xMx M = Co-Ni nanowires: an ab initio studyReport as inadecuate




Compositional variation of magnetic moment, magnetic anisotropy energy and coercivity in Fe1−xMx M = Co-Ni nanowires: an ab initio study - Download this document for free, or read online. Document in PDF available to download.

Applied Nanoscience

, Volume 2, Issue 4, pp 409–415

First Online: 08 January 2012Received: 28 October 2011Accepted: 27 December 2011

Abstract

Ab initio simulations are used to investigate the magnetic and electronic properties of freestanding Fe1−xMx M = Co-Ni nanowires. The stability of the nanowires increases with Co Ni addition, as seen from the increase in cohesive energy. With the addition of Co Ni, the average magnetic moment shows a monotonic decrease, in contrast to the Slater–Pauling behavior observed in bulk Fe–Co-Ni alloys. The magnetic anisotropy energy of the nanowire is observed to change sign, from a parallel alignment of spins along the wire axis, to a perpendicular alignment with the increase of Co and Ni content. The magnetic anisotropy energy variation is seen to be correlated with the orbital moment anisotropy. The coercivity, as calculated using the Jacobs–Bean model is observed to decrease with Co Ni addition to the nanowire.

KeywordsFe1−xCox and Fe1−xNix nanowires Magnetic moment Magnetic anisotropy energy Coercivity Ab initio calculations  Download fulltext PDF



Author: S. Assa Aravindh - S. Mathi Jaya - M. C. Valsakumar - C. S. Sundar

Source: https://link.springer.com/



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