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Characterization of phase constitution and magnetic properties of the hard magnetic nanocrystalline Nd9.5Fe63.65B21.85Nb5 alloy ribbons

Treść / Zawartość
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Warianty tytułu
Konferencja
Proceedings of the 9th All - Polish Seminar on Mössbauer Spectroscopy OSSM'2012, 10-13 June 2012, Lublin - Kazimierz Dolny, Poland
Języki publikacji
EN
Abstrakty
EN
In order to investigate the phase constitution of the nanocrystalline Nd9.5Fe63.65B21.85Nb5 alloy ribbons in the as-cast state and after short-time annealing Mossbauer study has been carried out. In as-cast state, ribbon samples were not fully amorphous but revealed soft magnetic properties. X-ray diffraction analysis showed the presence of hard magnetic Nd2Fe14B, metastable Nd2Fe23B3 and paramagnetic Nd1+epsilonFe4B4 phases in annealed samples. Mossbauer spectroscopy was used to determine the fractions of constituent phases formed during annealing of ribbons. Magnetic measurements were made with a vibrating sample magnetometer (VSM) and have shown that with increasing annealing temperature the remanence polarization Jr and maximum energy product (BH)max values were increasing.
Czasopismo
Rocznik
Strony
159--163
Opis fizyczny
Bibliogr. 10 poz., rys.
Twórcy
autor
autor
autor
autor
  • Częstochowa University of Technology, Institute of Physics, Department of Materials Processing Technology and Applied Physics, 19 Armii Krajowej Ave., 42-200 Częstochowa, Poland, Tel./Fax: +48 34 325 0795, mszwaja@wip.pcz.pl
Bibliografia
  • 1. Cheng Z, Shen B, Zhang J et al. (1997) Mössbauer spectroscopy and X-ray diffraction studies of the phase composition of crystallized NdxFe81.5–xB18.5 alloys with 7 ≤x ≤ 15. Chin Phys Lett 14;5:387–390
  • 2. Herbst JF, Croat JJ, Pinkerton FE (1984) Relationships between crystal structure and magnetic properties in Nd2Fe12B. Phys Rev B 29;7:4176–4178
  • 3. Pinkerton FE, Dunham WR (1984) Mössbauer effect studied of Nd2Fe14B and related melt-spun permanent magnet alloys. Appl Phys Lett 45;11:1248–1250
  • 4. Popov AG, Serikov VV, Kleinerman NM (2010) Thermomagnetic and Mössbauer studies of structural transformations caused in the amorphous Nd9Fe85B5 alloy by severe plastic deformation and annealing. Phys Met Metalloved 109;5:505–513
  • 5. Szwaja M, Pawlik K, Wysłocki JJ, Gębara P (2011) Magnetic properties and phase constitution of the nanocrystalline (Nd10Fe67B23)100–xNbx (where x=1,2,3,4) alloy ribbons (abstract). Conf on Physics of Magnetism 2011 (PM’11), Poznań, Poland:161
  • 6. Szwaja M, Pawlik P, Wysłocki JJ, Gębara P (2012) Magnetic properties of Nd9.6Fe64.32Nb4B22.08 alloy ribbons. Arch Metall Mater 57:233–236
  • 7. Tamura R, Kobayashi S, Fukuzaki T, Isobe M, Ueda Y (2009) Synthesis and magnetic properties of Fe-B-Nd-Nb nanocomposite magnets. J Phys Conf Series 144:012068
  • 8. Tilijan N, Zák T, Stajić-Trošić J, Menushenkov V (2002) Microstructure, magnetic properties and thermal stability of melt-spun Nd-Fe-B magnets with low Nd content. Metalurgija-Journal of Metallurgy 8:201–206
  • 9. Yamasaki M, Hamano M, Kobayashi T (2002) Mössbauer study on the crystallization process of alfa-Fe/Nd2Fe14B type nanocomposite magnet alloy. Mater Trans 43;11:2885–2889
  • 10. Zhang J, Lim KY, Feng YP, Li Y (2007) Fe-Nd-B based hard magnets from bulk amorphus precursor. Scripta Mater 56: 943–946
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-BUJ8-0025-0066
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