High-temperature Magnetic Properties of FeZrNbBCu Amorphous and Nanocrystalline Alloy
PENG Kun1, FU Ding-fa1, LIU Fu-sheng1, YANG Zao1, GAO Wen-li2, DU You-wei2
1. College of Materials Science and Engineering, Hunan University, Changsha 410082, China;
2. National Laboratory of Solid State Microstructure, Department of Physics, Nanjing University, Nanjing 210093, China
Abstract: The FeZrNbBCu amorphous ribbons were prepared by single-roller melt spinning method. The temperature dependence of permeability and magnetization was investigated for amorphous and nanocrystalline FeZrNbBCu alloy. A Hopkinson peak was observed in the amorphous alloy in the heating process, but was not observed in the nanocrystalline alloy, and this has been explained by the combination of the anisotropy reduction and the deterioration of magnetic properties. A rapid decrease in permeability near the Curie temperature of amorphous was observed in amorphous and partially crystallized nanocrystalline alloys; a slow decrease in permeability was observed in the highly crystallized nanocrystalline alloys, which was illustrated by exchange coupling in the two-phase nanocrystalline alloy.
Key words: Fe-based amorphous and nanocrystalline alloy; permeability; Hopkinson effect
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