Microstructure and magnetic properties of anisotropic Mn-Bi powder prepared by low energy ball milling assisted with polyvinylpyrrolidone
Source abstract
Abstract
The excellent anisotropic Mn 55Bi 45 powder was prepared by arc melting and surfactant-assisted low-energy ball milling (LEBM). The microstructure and magnetic properties of the alloy were investigated. The ionic polyvinylpyrrolidone (PVP) was selected as a surfactant. The results show that the addition of PVP can improve the low-temperature phase (LTP) content and magnetic properties of the Mn 55Bi 45 alloy. The coercivity ( H cj) of the anisotropic Mn 55Bi 45 powder is 14.7 kOe, the maximum energy product (( BH) max) is 7.1 MGOe and the saturation magnetization ( Ms) is 57.5 emu/g when it is 10 wt% PVP and after 3 h ball milling. The angle dependence of coercivity shows that mechanism of anisotropic Mn-Bi alloy follows to the Stoner-Wohlfarth model.
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Research context
OpenAlex topics: Magnetic Properties of Alloys · Magnetic properties of thin films · Magnetic Properties and Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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