Structure of α-FeSi alloys with 8 and 10 at % silicon |
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Authors: | N V Ershov Yu P Chernenkov V A Lukshina V I Fedorov |
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Institution: | 1. Institute of Metal Physics, Ural Branch of the Russian Academy of Sciences, ul. Sofii Kovalevskoi 18, Yekaterinburg, 620990, Russia 2. B.P. Konstantinov Petersburg Nuclear Physics Institute, Russian Academy of Sciences, Orlova Roshcha, Gatchina, Leningrad oblast, 188300, Russia
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Abstract: | The atomic structure of single-crystal samples of Fe1 ? x Si x (x = 0.08, 0.10) alloys has been investigated using X-ray diffraction. It has been shown that the body-centered cubic (BCC) lattice of these alloys contain clusters with local ordering of the B2 type, which are characteristic of alloys with depleted composition (x = 0.05?0.06). The Fe3Si phase with the D03 structure has been revealed at silicon concentrations x = 0.08 and 0.10. The volume fraction of Fe3Si-phase regions increases both with an increase in the silicon concentration in the Fe1 ? x Si x alloy and during annealing of the samples with this silicon concentration at a temperature of 450°C. Based on the results obtained, it has been concluded that the anisotropic distribution of the B2 clusters, which arises as a result of thermomagnetic or thermomechanical treatment, is responsible for the induction and stability of the uniaxial magnetic anisotropy in the Fe1 ? x Si x (x = 0.05?0.10) alloys. |
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