Mössbauer and MFM Investigations of Surface Magnetism in NANOPERM Nanocrystalline Alloys |
| M. Miglierinia,b, M. Pavúka
aInstitute of Nuclear and Physical Engineering, Faculty of Electrical Engineering and Information Technology, Slovak University of Technology in Bratislava, Ilkovičova 3, 812 19 Bratislava, Slovakia bRegional Centre of Advanced Technologies and Materials, Palacky University, 17. listopadu 12, 771 46 Olomouc, Czech Republic |
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| Structurally different surface regions are identified at both sides of the ribbon-shaped 57Fe90Zr7B3 NANOPERM alloy. Though paramagnetic in the as-quenched state, the air side shows significant contribution of crystalline bcc-Fe that decreases towards the interior of the ribbon. After annealing at 480°C, magnetic dipole interactions develop that are associated with enhanced number of ferromagnetic nanograins. Significant increase in the number of nanograins was revealed at the wheel side, while the one at the air side is almost saturated. The observed maze-type magnetic domains exhibit well developed structure with equally wide strips. |
DOI: 10.12693/APhysPolA.126.124 PACS numbers: 76.80.+y, 68.37.Rt, 75.60.Ch, 75.70.i, 71.55.Jv |