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Crystallization behavior and Mossbauer studies of the R6-(Fe,Nb)88-B6 alloys with R=Nd, Pr, Dy

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4 Author(s)
Papaefthymiou, V. ; Dept. of Phys., Ioannina Univ., Greece ; Moukarika, A. ; Withanawasam, L. ; Hadjipanayis, G.C.

We have prepared a new series of R-Fe-B alloys with R=Nd, Pr, and Dy having the Y3Fe62B14 structure using the melt-spinning technique. This metastable phase when annealed at higher temperatures transforms to the R2Fe14B1+α-Fe phase. We have studied the crystallization behavior of these alloys. 57Fe Mossbauer studies have shown that the as-spun samples were amorphous and the ribbons annealed at 600-620°C contain the metastable Y3 Fe62B14 type structure with α-Fe. The analysis of the Mossbauer spectra of the R3Fe62B 14 phases has yielded average hyperfine fields of 229 kG at 295 K and 315 kG at 17 K

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Magnetics, IEEE Transactions on  (Volume:37 ,  Issue: 4 )