Research ArticleOpen AccessGoogle Scholar indexed

The Structure and Magnetic Properties of Co77Zr18W5 Melt-Spun Ribbons

¹ College of Science, Shenyang Aerospace University, Shenyang, China; College of Physics, Jilin University, Changchun, China
² College of Science, Shenyang Aerospace University, Shenyang, China
³ College of Physics, Jilin University, Changchun, China
⁴ College of Physics, Jilin University, Changchun, China
⁵ College of Physics, Jilin University, Changchun, China
⁶ College of Science, Shenyang Aerospace University, Shenyang, China
⁷ College of Physics, Jilin University, Changchun, China

World Journal of Condensed Matter Physics·Volume 02 (2012)·Pages 197–201·Published 15 November 2012·DOI10.4236/wjcmp.2012.24033

Abstract

Based on X-ray diffraction, microscopic and magnetic analysis, the structure and magnetic properties of Co 77 Zr 18 W 5 melt-spun ribbons were studied in this paper. A new element to stabilize the metastable Co5Zr phase was found and the coercivity observed in Co-Zr alloys can be obviously enhanced by proper tungsten substitution. The Curie temperature of Co 77 Zr 18 W 5 ribbons is 475℃ which suggests that W doped Co-Zr alloys may become an attractive candidate perma- nent magnets for practical applications in high temperature. Annealing of the Co 77 Zr 18 W 5 ribbons results in a decrease of the coercivity which confirmed that the hard magnetic phase is Co 5 Zr phase in 77 Zr 18 W 5 melt-spun ribbons.

KeywordsCo-Zr AlloysCo&ltsub&gt5&lt/sub&gtZr PhaseCoercivityMelt-SpunPermanent Magnets

A. M. Gabay, Y. Zhang, G. C. Hadjipanayis, “Cobalt-Rich Magnetic Phases in Zr-Co Alloys,” Journal of Magnetiam and Magnetic Materials, Vol. 236, No. 1-2, 2001, pp. 37-41. doi:10.1016/S0304-8853(01)00446-2
B. G. Shen, L. Y. Yang, L. Cao and H. Q. Guo, “Hard Magnetic Properties in Melt-Spun Co82-xFexZr18 Alloys,” Journal of Applied Physics, Vol. 73, No. 10, 1993, pp. 5932-5934. doi:10.1063/1.353525
J. B. Zhang, Q. W. Sun, W. Q. Wang and F. Su, “Effects of Mo Additive on Structure and Magnetic Properties of Co82Zr18 Alloy,” Journal of Alloys and Compounds, Vol. 474, No. 1-2, 2009, pp. 48-51. doi:10.1016/j.jallcom.2008.07.004
G. C. Jeong and H. W. Kwon, “Study of Coercivity in Mechanically Alloyed Co-Zr System,” Journal of Magnetics, Vol. 67, No. 1, 2007, pp. 45-48. doi:10.4283/JMAG.2007.12.1.045
T. Saito, Y. Kamagata and W. Q. Wang, “The Origin of High-Saturation Magnetization in Co-Zr-C Melt-Spun Ribbons,” IEEE Transactions on Magnetics, Vol. 41, No. 10, 2005, pp. 3787-3789. doi:10.1109/TMAG.2005.854690
L. Y. Chen, H. W. Chang, C. H. Chiu, C. W. Chang and W. C. Chang, “Magnetic Properties, Phase Evolution, and Coercivity Mechanism of CoxZr98-xB2 (x = 74 - 86) Nano-composites,” Journal of Applied Physics, Vol. 97, No. 10, 2005, pp. 10F307-3. doi:10.1063/1.1853275
T. Saito, “High Performance Co-Zr-B Melt-Spun Ribbons,” Applied Physics Letters, Vol. 82, No. 14, 2003, pp. 2305-2307. doi:10.1063/1.1565694
C. Gao, H. Wan and G. C. Hadjipanayis, “High Coercivity in Non-Rare-Earth Containing Alloys,” Journal of Alloys and Compounds, Vol. 67, No. 9, 1990, pp. 4960-4962. doi:10.1063/1.344747
T. Ishikawa and K. Ohmori, “Hard Magnetic Phase in Rapidly Quenched Zr-Co-B Alloys,” IEEE Transactions on Magnetics, Vol. 26, No. 5, 1990, pp. 1370-1372. doi:10.1109/20.104381
G. V. Ivanova, N. N. Shchegoleva and A. M. Gabay, “Crystal Structure of Zr2Co11 Hare Magnetic Copound,” Journal of Alloys and Compounds, Vol. 432, No. 1-2, 2007, pp. 135-141. doi:10.1016/j.jallcom.2006.05.122
T. Saito, “The Origin of the Coercivity in Co-Zr System Alloys,” IEEE Transactions on Magnetics, Vol. 39, No. 5, 2003, pp. 2890-2893. doi:10.1109/TMAG.2003.815738
K. J. Strnat, G. Hoffer, J. C. Olson, W. Ostertag and J. J. Becker, “A Family of New Cobalt-Base Permanent Magnet Materials,” Journal of Applied Physics, Vol. 38, No. 3, 1967, pp. 1001-1002. doi:10.1063/1.1709459

Menu

The Structure and Magnetic Properties of Co<sub>77</sub>Zr<sub>18</sub>W<sub>5</sub> Melt-Spun Ribbons

Abstract

References (14)