Magnetic behavior of rapidly quenched Nd-Dy-Fe-B alloys

Conference · Mon Nov 01 04:00:00 EST 1993 · IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers); (United States)

OSTI ID:6822627

Pont, M; Reverter, J; Munoz, J S ^[1]

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1. Univ. Autonoma de Barcelona (Spain)

The effects of wheel speed on the magnetic properties of melt-spun Nd[sub 13.5]Dy[sub 3.7]Fe[sub 75]B[sub 7.8] alloys have been investigated. Structural characterization has been carried out by X-ray diffraction and Scanning Electron Microscopy. Thermal demagnetization has been studied by thermomagnetic analysis. The as-quenched samples show the Curie temperature of an amorphous phase around 460 K besides the [Tc] of the Nd[sub 2]Fe[sub 14]B[sub 1] phase at [Tc] = 589 K. Hysteresis loops have been measured with a VSM with applied fields up to 2 T at room temperature. A dip in the second quadrant of the hysteresis loops confirms the presence of an amorphous phase in the samples quenched at high speeds. After annealing the samples at 875 K for 4 min, the coercivity for the sample spun at 23 m/s has increased from 0.5 T to 1.55 T.

• OSTI ID: 6822627
• Report Number(s): CONF-930416--
• Conference Information: Journal Name: IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers); (United States) Journal Volume: 29:6Pt1
• Country of Publication: United States
• Language: English

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INFORMATION
IRON ALLOYS
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