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The Co82-xZr18Crx (x=0, 2, 3, 4) alloys are produced by melt-spinning. It is found that a proper addition of Cr can improve the coercivity significantly and a maximum coercivity of 6.5 kOe is obtained in the Co79Zr18Cr3 ribbon after having been annealed at 600 ℃. X-ray diffraction and thermomagnetic analysis are employed to determine its phase composition. It is found that the sample is comprised of the single Co11Zr2 and the Cr atoms enter into its lattice. A significant enhancement in the magnetocrystalline anisotropy field of Co11Zr2 is observed. SEM investigations show a microstructure consisting of equiaxed grains whose average size is about 400-500 nm. The coercivity enhancement in the Co79Zr18Cr3 alloy is ascribed to the increase in Ha.
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Keywords:
- Co-Zr-Cr melt-spun ribbons /
- coercivity /
- Co11Zr2 phase /
- heat treatment
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[26] Yang D, Wang J L, Tang N, Shen Y P, Yang F M 1999 Acta Phys. Sin. 48 80 (in Chinese) [阳东, 王建立, 唐宁, 沈宇平, 杨伏明 1999 物理学报 48 80]
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[29] [30] [31] Shen B G, Yang L Y, Cao L, Guo H Q 1993 J. Appl. Phys. 73 5932
[32] Hou Z P, Xu S F, Zhang J B, Wu C J, Liu D, Su F, Wang W Q 2013 J. Alloys. Compd. 555 28
[33] [34] [35] Zhang H W, Rong C B, Du X B, Zhang J, Zhang S Y, Shen B G 2003 Appl. Phys. Lett. 82 4098
[36] [37] Zhang H W, Rong C B, Zhang S Y, Shen B G 2004 Acta Phys. Sin. 53 4347 (in Chinese) [张宏伟, 荣传兵, 张绍英, 沈宝根 2004 物理学报 53 4347]
[38] Herzer G1989 IEEE Trans. Magn. 25 3327
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[42] Gong Y M, Lan Z H, Yan Y, Du X B, Wang W Q, Wang X F, Su F, Lu L, Zhang Z S, Jin H M, Wen G H 2008 Chin. Phys. B 17 1130
[43] -
[1] Akdogan O, Li W F, Hadjipanayis G C 2012 J. Nanopart. Res. 14 891
[2] [3] Stone R 2009 Science 325 1336
[4] [5] Sun W, Zhu M G, Fang Y K, Pan W, Li J J, Li Y F, Li W 2012 Rare Metals 31 470
[6] Saito T 2003 Appl. Phys. Lett. 82 2305
[7] [8] [9] Gao C, Wan H, Hadjipanayis G C 1990 J. Appl. Phys. 67 4960
[10] Gabay A M, Zhang Y, Hadjipanayis G C 2001 J. Magn. Magn. Mater. 236 37
[11] [12] Ishikawa T, Ohmori K 1990 IEEE Trans. Magn. 26 1370
[13] [14] [15] Demczyk B G, Cheng S F 1991 J. Appl. Cryst. 24 1023
[16] [17] Ivanova G V, Shchegoleva N N, Gabay A M 2007 J. Alloys. Compd. 432 135
[18] Saito T 2003 IEEE Trans. Magn. 39 2890
[19] [20] [21] Hou Z P, Su F, Xu S F, Zhang J B, Wu C J, Liu D, Wei B P, Wang W Q 2013 J. Magn. Magn. Mater. 346 124
[22] Zhang W Y, Valloppilly S R, Li X Z, Skomski R, Shield J E, Sellmyer D J 2012 IEEE Trans. Magn. 48 3603
[23] [24] [25] Wang W Q, Wang J L, Tang N, Bao F Q, Wu G H, Yang F M, Jin H M 2001 Acta Phys. Sin. 50 1534 (in Chinese) [王文全, 王建立, 唐宁, 包富泉, 吴光恒, 杨伏明, 金汉民 2001 物理学报 50 1534]
[26] Yang D, Wang J L, Tang N, Shen Y P, Yang F M 1999 Acta Phys. Sin. 48 80 (in Chinese) [阳东, 王建立, 唐宁, 沈宇平, 杨伏明 1999 物理学报 48 80]
[27] [28] Gabay A M, Shchegoleva N N, Gaviko V S, Ivanova G V 2003 Phys. Metals Metallography 95 122
[29] [30] [31] Shen B G, Yang L Y, Cao L, Guo H Q 1993 J. Appl. Phys. 73 5932
[32] Hou Z P, Xu S F, Zhang J B, Wu C J, Liu D, Su F, Wang W Q 2013 J. Alloys. Compd. 555 28
[33] [34] [35] Zhang H W, Rong C B, Du X B, Zhang J, Zhang S Y, Shen B G 2003 Appl. Phys. Lett. 82 4098
[36] [37] Zhang H W, Rong C B, Zhang S Y, Shen B G 2004 Acta Phys. Sin. 53 4347 (in Chinese) [张宏伟, 荣传兵, 张绍英, 沈宝根 2004 物理学报 53 4347]
[38] Herzer G1989 IEEE Trans. Magn. 25 3327
[39] [40] [41] Chen R J, Zhang H W, Shen B G, Yan A R, Chen L D 2009 Chin. Phys. B 18 2582
[42] Gong Y M, Lan Z H, Yan Y, Du X B, Wang W Q, Wang X F, Su F, Lu L, Zhang Z S, Jin H M, Wen G H 2008 Chin. Phys. B 17 1130
[43]
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