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Title:
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Influence of cooling rate on the properties of Fe73.5Si13.5B9Nb3Au1 ribbons |
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Author:
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D., T.H. Gam; N., H. Hai; L., V. Vu; N., H. Luong; N., Chau
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Abstract:
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Fe73.5Si13.5B9Nb3Au1 ribbons have been prepared by rapid cooling on a single copper
wheel with different speeds of wheel of 10, 20, 30, and 40 m/s. The as-spun samples are
amorphous. Upon annealing, the nanocrystalline phases are formed. Increasing the cooling rate
leads to thinner ribbons, higher crystallization activation energy and crystallization volume
fraction of the a-Fe(Si) phase, slightly increasing Curie temperature and soft magnetic properties
of annealed ribbons. The large magnetic entropy change is observed for sample with v = 30 m/s.
The mechanisms of the effects have been discussed. |
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Description:
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VNU Journal of Science, Mathematics - Physics. Vol. 24 (2008), No 4 (M.P), P. 189-195 |
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URI:
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http://hdl.handle.net/123456789/852
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Date:
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2008 |