Abstract
The addition of Molybdenum was used to modify the nanostructure and enhance coercivity of rare‐earth‐free Zr2Co11‐based nanocrystalline permanent magnets. The effect of Mo addition on magnetic domain structures of melt spun nanocrystalline Zr16Co84-xMox (x = 0, 0.5, 1, 1.5, and 2.0) ribbons has been investigated. It was found that magnetic properties and local domain structures are strongly influenced by Mo doping. The coercivity of the samples increases with the increase in Mo content (x ≤ 1.5). The maximum energy product (BH) max increases with increasing x from 0.5 MGOe for x = 0 to a maximum value of 4.2 MGOe for x = 1.5. The smallest domain size with a relatively short magnetic correlation length of 128 nm and largest root‐mean‐square phase shift Φrms value of 0.66° are observed for the x = 1.5. The optimal Mo addition promotes magnetic domain structure refinement and thus leads to a significant increase in coercivity and energy product in this sample.
Highlights
Nanocrystalline Zr2Co11-based materials are promising candidates for the development of rare-earth-free permanent magnets due to their good intrinsic magnetic properties with strong uniaxial anisotropy (11 Merg cm−3) and high Curie temperature (>500∘C) [1,2,3,4,5,6]
How Mo addition affects the magnetic domain structures of nanocrystalline Zr16Co84−xMox (x = 0, 0.5, 1.0, 1.5, and 2) alloys has been analyzed by Magnetic Force Microscopy (MFM)
It allows us to study in detail the evolution of local magnetic domain structures of Zr2Co11-based alloys with Mo additions and helps us to understand the magnetic microstructure-property relationship and further optimize the magnetic properties of such nanocrystalline materials
Summary
Nanocrystalline Zr2Co11-based materials are promising candidates for the development of rare-earth-free permanent magnets due to their good intrinsic magnetic properties with strong uniaxial anisotropy (11 Merg cm−3) and high Curie temperature (>500∘C) [1,2,3,4,5,6]. The investigation of the magnetic microstructure and property relationship is important for the understanding of these improvements and, more generally, for the development of high-performance magnets. How element additions affect magnetic microstructure and what is the correlation of magnetic microstructure and magnetism are still unclear. How Mo addition affects the magnetic domain structures of nanocrystalline Zr16Co84−xMox (x = 0, 0.5, 1.0, 1.5, and 2) alloys has been analyzed by Magnetic Force Microscopy (MFM). It allows us to study in detail the evolution of local magnetic domain structures of Zr2Co11-based alloys with Mo additions and helps us to understand the magnetic microstructure-property relationship and further optimize the magnetic properties of such nanocrystalline materials
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
