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Magnetic properties, domain structure, and microstructure of anisotropic SmCo6.5Zr0.5 ribbons with C addition

Published online by Cambridge University Press:  26 November 2012

A-Ru Yan
Affiliation:
State Key Laboratory of Magnetism, Institute of Physics and Center of Condensed Matter Physics, Chinese Academy of Science, Beijing 100080, People's Republic of China
Zhi-Gang Sun
Affiliation:
State Key Laboratory of Magnetism, Institute of Physics and Center of Condensed Matter Physics, Chinese Academy of Science, Beijing 100080, People's Republic of China
Wen-Yong Zhang
Affiliation:
State Key Laboratory of Magnetism, Institute of Physics and Center of Condensed Matter Physics, Chinese Academy of Science, Beijing 100080, People's Republic of China
Hong-Wei Zhang
Affiliation:
State Key Laboratory of Magnetism, Institute of Physics and Center of Condensed Matter Physics, Chinese Academy of Science, Beijing 100080, People's Republic of China
Bao-Gen Shen
Affiliation:
State Key Laboratory of Magnetism, Institute of Physics and Center of Condensed Matter Physics, Chinese Academy of Science, Beijing 100080, People's Republic of China
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Abstract

The magnetic properties and the domain structure of anisotropic melt-spun SmCo6.5Zr0.5 alloys with C addition was investigated by means of x-ray diffraction (XRD), magnetic measurement, and magnetic force microscopy. The XRD analyses showed that the addition of a few percent of C led to a significant increase in the coercivity and simultaneously affected the characterization of crystalline texture of the ribbons. The easy magnetization c axis changed from parallel to the ribbon plane for SmCo6.5Zr0.5 ribbons to normal to the ribbon plane for SmCo6.5Zr0.5C0.25−0.75 ribbons. An optimal coercivity of 0.92 T was obtained for the SmCo6.5Zr0.5C0.5 ribbon spun at 5 m/s. The corresponding remanence measured normal or parallel to the ribbon plane was 7.1 kGs or 3.1 kGs, respectively. The domain structure was studied by magnetic force microscopey. A strip-shaped domain was observed on the surface of the SmCo6.5Zr0.5 ribbons and the walls lay straight and parallel. For C-doped ribbons, the domain walls formed a maze domain pattern of grains with c axis normal to the ribbon plane. Scanning electron micrographs showed that a dendrite structure was present in the SmCoZr ribbon surface, and C addition caused the above-mentioned dendrite to diminish.

Type
Rapid Communications
Copyright
Copyright © Materials Research Society 2001

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References

REFERENCES

1.Dadon, D., Gefen, Y., and Dariel, M.P., IEEE Trans. Magn. 23, 3605 (1987).Google Scholar
2.Paik, C.R., Okada, M., and Homma, M., IEEE Trans. Magn. 26, 1730 (1990).Google Scholar
3.Coehoorn, R. and Duchateau, J., Mater. Sci. Eng. 99, 131 (1988).CrossRefGoogle Scholar
4.Kuji, T., O' Handley, R.C., and Grant, N.J., Appl. Phys. Lett. 54, 2487 (1989).CrossRefGoogle Scholar
5.Yan, A., Zhang, W., Zhang, H., and Shen, B., J. Magn. Magn. Mater (2000, in press).Google Scholar
6.Yan, A., Sun, Z., Zhang, H., Zhang, W., and Shen, B. (unpublished).Google Scholar
7.Saito, H., Takahashi, M., Wakiyama, T., Kodoand, G., and Nakagawa, H., J. Magn. Magn. Mater. 82, 322 (1989).CrossRefGoogle Scholar
8.Buschow, K.H.J. and den Broeder, F.J.A., J. Less-Common Met. 3, 191 (1973).Google Scholar
9.Yang, J., Mao, O., and Altounian, Z., IEEE Trans. Magn. 32, 4390 (1996).Google Scholar
10.Huang, M.Q., Wallace, W.E., McHenry, M., Chen, Q., and Ma, B.M., J. Appl. Phys. 83, 6718 (1998).Google Scholar
11.Huang, M.Q., Drennan, M., Wallace, W. E., McHenry, M., Chen, Q., and Ma, B.M., J. Appl. Phys 85, 5663 (1999).Google Scholar
12.Shen, B.G., Kong, L.S., and Cao, L., Solid State Commun. 83, 753 (1992).Google Scholar
13.Cao, L., Kong, L.S., and Shen, B.G., J. Phys. Condens Matter 4, L515 (1992).Google Scholar
14.Shen, B.G., Kong, L.S., Wang, F.W., and Cao, L., Appl. Phys. Lett. 63, 2288 (1993).CrossRefGoogle Scholar