Annealed FINEMET ribbons: Structure and magnetic anisotropy as revealed by the high velocity resolution Mössbauer spectroscopy / Oshtrakh M.I., Klencsár Z., Semionkin V.A., Kuzmann E., Homonnay Z., Varga L.K. // Materials Chemistry and Physics. - 2016. - V. 180, l. . - P. 66-74.

ISSN:
02540584
Type:
Article
Abstract:
The high velocity resolution 57Fe Mössbauer spectroscopy was used in order to elucidate structural and compositional details of FINEMET (Fe73.5Si15.5Nb3B7Cu1) alloys obtained via the annealing (with and without external magnetic field) of rapidly quenched ribbons. The analysis of the measured Mössbauer spectra was carried out, on one hand, by considering the possibility of a random distribution of iron atoms substituting Si at the D sites in the well crystallized DO3 Fe-Si phase, on the other hand, by allowing for an arbitrary-shape hyperfine magnetic field distribution for the case of the amorphous matrix. The results refer to the influence of the next-nearest-neighbor configurations on the magnitude of iron magnetic moments at the D sites in the precipitated nanocrystalline Fe-Si phase. The applied analysis method enables us to draw conclusions regarding the relative occurrence of the various iron microenvironments in the nanocrystalline phase and amorphous matrix, and the associated Si concentration of the precipitated nanocrystalline DO3 Fe-Si phase. The studied samples provide further evidence concerning the correlation between the induced magnetic anisotropy and the magnetic permeability in annealed FINEMET ribbons. © 2016 Elsevier B.V.
Author keywords:
Alloys; Annealing; Magnetic properties; Mössbauer spectroscopy; Nanostructures
Index keywords:
Alloying; Amorphous silicon; Anisotropy; Annealing; Iron; Magnetic fields; Magnetic moments; Magnetic permeability; Magnetic properties; Magnetism; Nanocrystals; Nanostructures; Silicon; Spectrum anal
DOI:
10.1016/j.matchemphys.2016.05.
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Link https://www.scopus.com/inward/record.uri?eid=2-s2.0-84970006596&doi=10.1016%2fj.matchemphys.2016.05.032&partnerID=40&md5=ed5fddedaf0b8281339b0a7b662f402e
Affiliations Department of Physical Techniques and Devices for Quality Control, Institute of Physics and Technology, Ural Federal University, Ekaterinburg, Russian Federation; Department of Experimental Physics, Institute of Physics and Technology, Ural Federal University, Ekaterinburg, Russian Federation; Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, Hungarian Academy of Sciences, Budapest, Hungary; Laboratory of Nuclear Chemistry, Institute of Chemistry, Eötvös Loránd University, Budapest, Hungary; Wigner Research Centre for Physics, Hungarian Academy of Sciences, Budapest, Hungary
Author Keywords Alloys; Annealing; Magnetic properties; Mössbauer spectroscopy; Nanostructures
Funding Details EAI-2009/003-10030, MTA, Hungarian Academy of Sciences; Ministry of Education and Science of the Russian Federation
Funding Text The authors wish to thank Dr. M.S. Karabanalov and Dr. A.V. Chukin (Ural Federal University, Ekaterinburg) for SEM and XRD measurements, respectively. The research was supported by grant of the Hungarian Science Foundation (OTKA K68135, K115784 and K115913), the Hungarian Academy of Sciences under project No EAI-2009/003-10030, the Ministry of Education and Science of the Russian Federation (basic financing for the Project # 2085) and Act 211 Government of the Russian Federation, contract № 02.A03.21.0006. This work was carried out within the Agreement of Cooperation between Ural Federal University (Ekaterinburg) and Eötvös Loránd University (Budapest).
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Correspondence Address Oshtrakh, M.I.; Department of Physical Techniques and Devices for Quality Control, Institute of Physics and Technology, Ural Federal UniversityRussian Federation; email: oshtrakh@gmail.com
Publisher Elsevier Ltd
CODEN MCHPD
Language of Original Document English
Abbreviated Source Title Mater Chem Phys
Source Scopus