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Cooling rate induced variation in microstructure and magnetic structure of Nd60Fe30Al10 glass forming alloy |
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| Authors: | Y. Hu L. Liu |
| Affiliation: | a Advanced Manufacturing Technology Research Center, Department of Industrial and Systems Engineering, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, P.R. China b The State Key Lab of Plastic Forming Stimulation and Die and Mould Technology, Huazhong University of Science and Technology, Wu Han 430074, P.R. China c Department of Materials and Energy, Guangdong University of Technology, Guang Zhou 510006, P.R. China |
| Abstract: | Cooling rate induced variation in microstructure and magnetic structure was investigated in the as-cast Nd60Fe30Al10 alloy. Because the cooling rate was different from the periphery to the center regions, apparent evolution from a full amorphous to a partial precipitated crystalline structure was observed in one as-cast sample. Corresponding to different microstructures, two magnetic domain structures, i.e. fine strip-like domains in sub-micron scale and sunflower-like domains in micron scale, were observed at the periphery and the center of a cross section, respectively. The variation of magnetic properties was discussed in the view of exchange interaction coupling. |
| Keywords: | Bulk metallic glasses Microstructure Magnetic domain structure Cooling rate Exchange interaction coupling |
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