Web of Science: 4 cites, Scopus: 4 cites, Google Scholar: cites,
In-plane/out-of-plane disorder influence on the magnetic anisotropy of Fe1-yMnyPt-L10 bulk alloy
Cuadrado, Ramón (Institut Català de Nanociència i Nanotecnologia)
Liu, Kai (University of California. Physics Department)
Klemmer, Timothy J. (Seagate Technology)
Chantrell, Roy W. (University of York. Department of Physics)

Data: 2016
Resum: The random substitution of a non-magnetic species instead of Fe atoms in FePt-L1 bulk alloy will permit to tune the magnetic anisotropy energy of this material. We have performed by means of first principles calculations a study of Fe MnPt-L1 (y = 0. 0, 0. 08, 0. 12, 0. 17, 0. 22, and 0. 25) bulk alloy for a fixed Pt concentration when the Mn species have ferro-/antiferromagnetic (FM,AFM) alignment at the same(different) atomic plane(s). This substitution will promote several in-plane lattice values for a fixed amount of Mn. Charge hybridization will change compared to the FePt-L1 bulk due to this lattice variation leading to a site resolved magnetic moment modification. We demonstrate that this translates into a total magnetic anisotropy reduction for the AFM phase and an enhancement for the FM alignment. Several geometric configurations were taken into account for a fixed Mn concentration because of different possible Mn positions in the simulation cell.
Ajuts: European Commission 281043
Drets: Tots els drets reservats.
Llengua: Anglès
Document: Article ; recerca ; Versió sotmesa a revisió
Matèria: First-principles calculation ; Geometric configurations ; In-plane lattices ; Lattice variation ; Magnetic anisotropy energy ; Mn concentrations ; Moment modification ; Random substitution
Publicat a: Applied physics letters, Vol. 108, Issue 12 (March 2016) , art. 123102, ISSN 1077-3118

DOI: 10.1063/1.4944534

6 p, 2.3 MB

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