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Engineering perpendicular magnetic anisotropy in Fe via interstitial nitrogenation: N choose K

Zhang, Hongbin and Dirba, Imants and Helbig, Tim and Alff, Lambert and Gutfleisch, Oliver (2016):
Engineering perpendicular magnetic anisotropy in Fe via interstitial nitrogenation: N choose K.
In: APL Materials, American Institute of Physics, Melville, USA, p. 116104, 4, (11), ISSN 2166-532X, DOI: 10.1063/1.4967285, [Online-Edition: https://doi.org/10.1063/1.4967285],
[Article]

Abstract

In this work, combining experimental results and first principles calculations, we show that interstitial nitrogen not only serves for inducing tetragonality in Fe8Nx but is also essential for achieving a high degree of perpendicular magnetocrystalline anisotropy, K. Our results demonstrate that the orbital magnetic moments of the iron atoms above and below N in the direction of magnetization are much more susceptible to the applied magnetic field than their in-plane counterparts, leading to a giant value of K as compared to a hypothetical distorted material without N. (C) 2016 Author(s).

Item Type: Article
Erschienen: 2016
Creators: Zhang, Hongbin and Dirba, Imants and Helbig, Tim and Alff, Lambert and Gutfleisch, Oliver
Title: Engineering perpendicular magnetic anisotropy in Fe via interstitial nitrogenation: N choose K
Language: English
Abstract:

In this work, combining experimental results and first principles calculations, we show that interstitial nitrogen not only serves for inducing tetragonality in Fe8Nx but is also essential for achieving a high degree of perpendicular magnetocrystalline anisotropy, K. Our results demonstrate that the orbital magnetic moments of the iron atoms above and below N in the direction of magnetization are much more susceptible to the applied magnetic field than their in-plane counterparts, leading to a giant value of K as compared to a hypothetical distorted material without N. (C) 2016 Author(s).

Journal or Publication Title: APL Materials
Volume: 4
Number: 11
Publisher: American Institute of Physics, Melville, USA
Divisions: 11 Department of Materials and Earth Sciences
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences > Material Science > Advanced Thin Film Technology
11 Department of Materials and Earth Sciences > Material Science > Functional Materials
11 Department of Materials and Earth Sciences > Material Science > Theory of Magnetic Materials
Date Deposited: 29 Nov 2016 13:34
DOI: 10.1063/1.4967285
Official URL: https://doi.org/10.1063/1.4967285
Funders: This work was supported by the LOEWE project RESPONSE funded by the Ministry of Higher Education, Research and the Arts (HMWK) of the Hessen state (Germany)., I.D. thanks the BMBF for financial support within the Project No. 03X3582.
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