Observational analysis shows increased magnetostriction in amorphous Fe-B alloys with Pr-additive, indicating potential for enhanced magnetic properties.
Amorphous Fe 86 _ x B 14 Fr x (2 « x « 8 at.%) alloys were prepared by rapid solidification process in order to investigate the effects of Pr-additive on the magnetostriction of amorphous Fe-B alloys. As the Pr content increases in the as-prepared amorphous Fe 86 _ x B 14 Pr x alloys, the saturation magnetostriction constant, λ s increases to 50 ppm despite of decrease of saturation magnetization. The saturation magnetostriction constant of amorphous Fe 84 B 14 Pr 2 alloy annealed at 300° C for 2 h increases to 70 ppm. The power loss and ac permeability (E = 50 kHz, B m = 0.1 T) of the annealed amorphous Fe 84 B 14 Pr 2 alloy are 15 W/kg and 5.5 χ 10 3 , respectively.
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Cho et al. (1995) studied this question.
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