Abstract
The paper presents the results of research on the effect of Pt addition in the amount of 2 to 3% at. in to bulk Fe61Co10B20Y8-xW1Ptx alloy on its structure and magnetic properties. Alloys in the form of tiles were made by pressing a liquid alloy into a copper liquid-cooled mold. Structural examinations were carried out using X-ray diffraction (XRD). The magnetic properties were examined using a vibration magnetometer (VSM). Based on structural investigations, the occurrence of crystalline phases, i.e.: a-Fe, Fe2B, FePt, Fe3Pt, FePt3, was found. The results of VSM tests showed that both saturation magnetization (m0Ms) and coercive field (Hc) significantly increased. The study showed that even a small change in the Pt content in the alloy affects its structure and thus significantly affects the magnetic properties.
Highlights
One of the newer groups of Fe-based materials are the so-called massive amorphous and nanocrystalline alloys
As a result of heat treatment of the amorphous tapes, single-phase or polinary phase alloys rich in different crystalline phases based on Fe, Pt and other metals can be obtained [13-24]
The research on the structure of the samples in the state after solidification and low energy powdering was carried out using an X-ray diffractometer (XRD) Bruker D-8 Advance
Summary
One of the newer groups of Fe-based materials are the so-called massive amorphous and nanocrystalline alloys. Classical amorphous tape materials show slightly different parameter values than massive amorphous alloys, with same composition. Pt. The precursor for obtaining magnetically hard materials are rapid-cooled tapes, usually with an amorphous structure [7-12].
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