Anisotropic Nd-Fe-M-B flakes by single-roller melt spinning

Anisotropic Nd13Fe81−xMxB6 flakes (M=0.5–3 at. % one of Ti/Zr/V/Ta/Mo/Zn) are reproducibly obtainable using single-roller melt spinning at lower substrate velocities (Vs, 8–15 m/s). The degree of preferred orientation (DPO) of spun flakes calculated from x-ray diffraction patterns is 70%–97% on the...

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Bibliographic Details
Published in:Applied physics letters 1991-10, Vol.59 (16), p.2046-2048
Main Authors: TSUNG-SHUNE CHIN, HUANG, S. H, YAU, J. M
Format: Article
Language:English
Subjects:
Applied sciences
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Exact sciences and technology
Magnetic anisotropy
Magnetic properties and materials
Magnetically ordered materials: other intrinsic properties
Metals. Metallurgy
Physics
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Summary:Anisotropic Nd13Fe81−xMxB6 flakes (M=0.5–3 at. % one of Ti/Zr/V/Ta/Mo/Zn) are reproducibly obtainable using single-roller melt spinning at lower substrate velocities (Vs, 8–15 m/s). The degree of preferred orientation (DPO) of spun flakes calculated from x-ray diffraction patterns is 70%–97% on the free surface, 50%–80% on the wheel surface, at Vs=8, 10 m/s. In the case of adding 1 at. % of Ti/V/Mo/Zr/Ta, Vs=8 m/s, the resultant DPO value can be higher than 50% across the whole thickness. Magnetic measurements on spun flakes show highly anisotropic behavior. Maximum energy product of Nd13Fe80ZrB6 flakes spun at 12 m/s, pulse magnetized to 5.5 T, and measured normal or parallel to the flake surface is 144 kJ/m3 (18 MGOe) or 124 kJ/m3 (15.5 MGOe), respectively.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.106127