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Influence of interface on structure and magnetic properties of Fe50B50 nanoglass

Stoesser, A. and Ghafari, M. and Kilmametov, A. and Gleiter, H. and Sakurai, Y. and Itou, M. and Kohara, S. and Hahn, H. and Kamali, S. (2014):
Influence of interface on structure and magnetic properties of Fe50B50 nanoglass.
In: Journal of Applied Physics, AIP Publishing LLC, p. 134305, 116, (13), ISSN 0021-8979, [Online-Edition: http://dx.doi.org/10.1063/1.4897153],
[Article]

Abstract

In contrast to rapidly quenched metallic glasses, nanoglasses consist of two components, namely amorphous nanograins and interfacial regions with distinctively different properties. Various physical methods have been employed to obtain information on the atomistic and magnetic properties of such materials. For the case of a Fe50B50 nanoglass, using high-energy X-ray diffraction, it was found that the short-range order of the nanograins is similar to that of a crystalline FeB alloy. Magnetic Compton scattering shows that the total magnetic moment is the sum of the magnetic moment of the nanograins and the weak magnetic moment of the interfacial regions (mu(Interface) = +0.08 mu(B)). The measured moment of boron agrees (mu(Boron) = -0.08 mu B) with linear Muffin-Tin calculations. From the results of Mossbauer and magnetic Compton scattering, it can be concluded that the boron atoms segregate in the interfacial regions, resulting in a reduced boron concentration in the nanograins.

Item Type: Article
Erschienen: 2014
Creators: Stoesser, A. and Ghafari, M. and Kilmametov, A. and Gleiter, H. and Sakurai, Y. and Itou, M. and Kohara, S. and Hahn, H. and Kamali, S.
Title: Influence of interface on structure and magnetic properties of Fe50B50 nanoglass
Language: English
Abstract:

In contrast to rapidly quenched metallic glasses, nanoglasses consist of two components, namely amorphous nanograins and interfacial regions with distinctively different properties. Various physical methods have been employed to obtain information on the atomistic and magnetic properties of such materials. For the case of a Fe50B50 nanoglass, using high-energy X-ray diffraction, it was found that the short-range order of the nanograins is similar to that of a crystalline FeB alloy. Magnetic Compton scattering shows that the total magnetic moment is the sum of the magnetic moment of the nanograins and the weak magnetic moment of the interfacial regions (mu(Interface) = +0.08 mu(B)). The measured moment of boron agrees (mu(Boron) = -0.08 mu B) with linear Muffin-Tin calculations. From the results of Mossbauer and magnetic Compton scattering, it can be concluded that the boron atoms segregate in the interfacial regions, resulting in a reduced boron concentration in the nanograins.

Journal or Publication Title: Journal of Applied Physics
Volume: 116
Number: 13
Publisher: AIP Publishing LLC
Divisions: 11 Department of Materials and Earth Sciences > Material Science > Joint Research Laboratory Nanomaterials
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences
Date Deposited: 25 Feb 2015 13:29
Official URL: http://dx.doi.org/10.1063/1.4897153
Identification Number: doi:10.1063/1.4897153
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