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

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] ; ; ;  [3] ;  [1] ;  [2] ;  [4] ;  [5]
  1. Institute of Nanotechnology, Karlsruhe Institute of Technology, Karlsruhe (Germany)
  2. (China)
  3. Japan Synchrotron Radiation Research Institute, SPring-8, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198 (Japan)
  4. (Germany)
  5. Department of Chemistry, University of California Davis, Davis, California 95616 (United States)
Publication Date:
OSTI Identifier:
22305765
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 116; Journal Issue: 13; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
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