Fe86.5Zr7B3Cu3.5 Nanocrystalline Ribbon Prepared by Melt – Spinning Technique without Annealing
Fe86.5Zr7B3Cu3.5 nanocrystalline ribbon can be directly fabricated by melt – spinning technique with an appropriate quenching speed without annealing processes. The average grain size of α-Fe for Fe86.5Zr7B3Cu3.5 as quenched ribbon prepared with a quenched speed V=40 m/s is about 10-13 nm estimated from X-ray diffraction and TEM observation. For Fe86.5Zr7B3Cu3.5 nanocrystalline as quenched ribbon (V=40m/s), the saturation magnetic induction Bs is 1.47 T, permeability μe at 1 kHz is 25600 and saturation magnetostriction λs is -2×10-6. The magnetoimpedance value Z/Z0 of the Fe86.5Zr7B3Cu3.5 nanocrystalline as quenched ribbon reaches –38.32 % under H=7162 A/m. Our present results reveal a novel route to fabricate the nanocrystaline ribbons with excellent soft magnetic properties and giant magnetoimpedance.
Chunli BAI, Sishen XIE, Xing ZHU
J. F. Hu et al., "Fe86.5Zr7B3Cu3.5 Nanocrystalline Ribbon Prepared by Melt – Spinning Technique without Annealing", Solid State Phenomena, Vols. 121-123, pp. 1257-1260, 2007