Co-Si-B and Fe-Co-B amorphous alloys: Induced anisotropy and various magnetic properties |
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| Institution: | 1. State Key Laboratory for Mechanical Behavior of Materials, School of Materials Science and Engineering, Xi''an Jiaotong University, No.28, Xianning West Road, Xi''an, Shaanxi 710049, PR China;2. Research Institute of Advanced Materials Processing Technology, School of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, PR China;3. College of Materials Science and Engineering, Xi''an University of Science and Technology, No.58 Yanta Road, Xi''an, Shaanxi 710054, PR China |
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| Abstract: | The dependence on the metalloid content of some magnetic properties of Co100−x(Si0.6B0.4)x (22.5 ⩽ x ⩽ 30) and Co75Si25−xBx (10 ⩽ x ⩽ 25) amorphous alloys has been studied.Ribbons were subjected to different kinds of heating treatments: field annealing, stress annealing and stress-field annealing (tensile stress and longitudinal magnetic field applied simultaneously). While the anisotropies induced by simple field annealings are of the order of magnitude of 0.1 kJm-3, the anisotropy induced by stress-field annealing can reach values up to 0.5 kJm-3. The preferred axis is longitudinal for most of the annealing conditions. The temperature and composition dependence of the magnetostriction have been studied too.Stress, field and stress-field induced anisotropies have also been measured in Co66Fe9B25 samples (λs > 0). In this case the preferred axis is transverse to the ribbon axis. |
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