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Title: Influence of interface on structure and magnetic properties of Fe₅₀B₅₀ nanoglass

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 (μ{sub Interface}=+0.08 μB). The measured moment of boron agrees (μ{sub Boron}= -0.08 μB) with linear Muffin-Tin calculations. From the results of Mössbauer 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.

Authors:
;  [1];  [1]; ; ;  [2];  [1]
  1. Institute of Nanotechnology, Karlsruhe Institute of Technology, Karlsruhe (Germany)
  2. Japan Synchrotron Radiation Research Institute, SPring-8, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198 (Japan)
Publication Date:
OSTI Identifier:
22305765
Resource Type:
Journal Article
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Volume: 116; Journal Issue: 13; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0021-8979
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; ALLOYS; BORON COMPOUNDS; COMPTON EFFECT; INTERFACES; IRON BORIDES; IRON COMPOUNDS; MAGNETIC MOMENTS; MAGNETIC PROPERTIES; METALLIC GLASSES; MOESSBAUER EFFECT; MUFFIN-TIN POTENTIAL; NANOMATERIALS; NANOSTRUCTURES; X-RAY DIFFRACTION

Citation Formats

Stoesser, A., Kilmametov, A., Ghafari, M., E-mail: mohammad.ghafari@kit.edu, E-mail: skamali@ucdavis.edu, Gleiter, H., Herbert Gleiter Institute of Nanoscience, Nanjing University of Science and Technology, Nanjing 210094, Sakurai, Y., Itou, M., Kohara, S., Hahn, H., Herbert Gleiter Institute of Nanoscience, Nanjing University of Science and Technology, Nanjing 210094, Joint Research Laboratory Nanomaterials, TU Darmstadt, Darmstadt, and Kamali, S., E-mail: mohammad.ghafari@kit.edu, E-mail: skamali@ucdavis.edu. Influence of interface on structure and magnetic properties of Fe₅₀B₅₀ nanoglass. United States: N. p., 2014. Web. doi:10.1063/1.4897153.
Stoesser, A., Kilmametov, A., Ghafari, M., E-mail: mohammad.ghafari@kit.edu, E-mail: skamali@ucdavis.edu, Gleiter, H., Herbert Gleiter Institute of Nanoscience, Nanjing University of Science and Technology, Nanjing 210094, Sakurai, Y., Itou, M., Kohara, S., Hahn, H., Herbert Gleiter Institute of Nanoscience, Nanjing University of Science and Technology, Nanjing 210094, Joint Research Laboratory Nanomaterials, TU Darmstadt, Darmstadt, & Kamali, S., E-mail: mohammad.ghafari@kit.edu, E-mail: skamali@ucdavis.edu. Influence of interface on structure and magnetic properties of Fe₅₀B₅₀ nanoglass. United States. https://doi.org/10.1063/1.4897153
Stoesser, A., Kilmametov, A., Ghafari, M., E-mail: mohammad.ghafari@kit.edu, E-mail: skamali@ucdavis.edu, Gleiter, H., Herbert Gleiter Institute of Nanoscience, Nanjing University of Science and Technology, Nanjing 210094, Sakurai, Y., Itou, M., Kohara, S., Hahn, H., Herbert Gleiter Institute of Nanoscience, Nanjing University of Science and Technology, Nanjing 210094, Joint Research Laboratory Nanomaterials, TU Darmstadt, Darmstadt, and Kamali, S., E-mail: mohammad.ghafari@kit.edu, E-mail: skamali@ucdavis.edu. 2014. "Influence of interface on structure and magnetic properties of Fe₅₀B₅₀ nanoglass". United States. https://doi.org/10.1063/1.4897153.
@article{osti_22305765,
title = {Influence of interface on structure and magnetic properties of Fe₅₀B₅₀ nanoglass},
author = {Stoesser, A. and Kilmametov, A. and Ghafari, M., E-mail: mohammad.ghafari@kit.edu, E-mail: skamali@ucdavis.edu and Gleiter, H. and Herbert Gleiter Institute of Nanoscience, Nanjing University of Science and Technology, Nanjing 210094 and Sakurai, Y. and Itou, M. and Kohara, S. and Hahn, H. and Herbert Gleiter Institute of Nanoscience, Nanjing University of Science and Technology, Nanjing 210094 and Joint Research Laboratory Nanomaterials, TU Darmstadt, Darmstadt and Kamali, S., E-mail: mohammad.ghafari@kit.edu, E-mail: skamali@ucdavis.edu},
abstractNote = {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 (μ{sub Interface}=+0.08 μB). The measured moment of boron agrees (μ{sub Boron}= -0.08 μB) with linear Muffin-Tin calculations. From the results of Mössbauer 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.},
doi = {10.1063/1.4897153},
url = {https://www.osti.gov/biblio/22305765}, journal = {Journal of Applied Physics},
issn = {0021-8979},
number = 13,
volume = 116,
place = {United States},
year = {Tue Oct 07 00:00:00 EDT 2014},
month = {Tue Oct 07 00:00:00 EDT 2014}
}