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Influence of structure on coercivity in nanocrystalline (Fe1−xCox)86Hf7B6Cu1 alloys |
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| Authors: | X.B. Liang T. Kulik J. Ferenc M. Kowalczyk G. Vlas k W.S. Sun B.S. Xu |
| Affiliation: | aFaculty of Materials Science and Engineering, Warsaw University of Technology, ul. Wołoska 141, 02-507 Warsaw, Poland bNational Key Laboratory for Remanufacturing, Dujiakan 21, Changxindian, 100072 Beijing, PR China cInstitute of physics, Slovak Academy of Sciences, Dubravska Cesta 9, 842 28 Bratislava, Slovakia dInstitute of the Metal Research, Chinese Academy of Sciences, Wenhua Road 72, 110016 Shenyang, PR China |
| Abstract: | The relationship between coercivity and structure in nanocrystalline (Fe1−xCox)86Hf7B6Cu1 (x=0–1) alloys was surveyed. It was found that the increase of Co content in the alloys studied was accompanied by the increase of coercivity. However, we suggest that the factors influencing the coercivity change with the concentration of cobalt in these nanocrystalline alloys. In the iron-rich alloys, the average grain size and magnetostriction play predominant roles in the coercivity. On the other hand, in the case of cobalt-rich alloys, the coercivity mostly originates from the FCC-Co phase with large magnetocrystalline anisotropy and the weak exchange coupling between BCC-Fe(Co) and FCC-Co(Fe). |
| Keywords: | Nanocrystalline materials Coercivity Grain size Saturation magnetostriction constant Magnetocrystalline anisotropy |
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