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The hysteresis loops, angular distribution, nucleation field, coercivity and energy product are calculated by three-dimensional micromagnetic method for Nd2Fe14B/Fe65Co35 bilayers with a deviation of the easy axis, and the results are compared with the experimental results. The results show that obvious nucleation can be observed only when the β between the easy axis and the applied field is equal to 0°, and the nucleation field and the coercivity decrease as the thickness of the soft phase Ls increases. The remanence decreases and the squareness of the hysteresis loop weakens as β increases, leading to the decrease of the energy product while the largest maximum energy product (561.61 kJ/m3) occurs at Ls=1 nm and β=0°. The shapes of the hysteresis loops, the remanence and the coercivity obtained from calculations and experiments are close to each other.
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Keywords:
- micromagnetic simulation /
- easy axis orientation /
- coercivity /
- energy products
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[2] Skomski R, Coey J M D 1993 Phys. Rev. B 48 15812
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[13] Ma B, Wang H, Zhao H B, Sun C G, Acharya R, Wang J P 2010 IEEE Trans. Magn. 46 2345
[14] Hou H C, Liao J W, Lin H J, Chang F H, Chen R Z, Chiu C H, Lai C H 2011 J. Appl. Phys. 109 07C104
[15] Belemuk A M, Chui S T 2011 J. Appl. Phys. 109 093909
[16] Guo G H, Zhang G F, Wang X G 2011 Acta Phys. Sin. 60 107503 (in Chinese) [郭光华, 张光富, 王希光 2011 60 107503]
[17] Li Z B, Shen B G, Sun J R 2013 J. Appl. Phys. 113 013902
[18] Li Z B, Shen B G, Niu E, Sun J R 2013 Appl. Phys. Lett. 103 062405
[19] Li Z B, Zhang M, Shen B G, Sun J R 2013 Appl. Phys. Lett. 102 102405
[20] Li Y Q, Yue M, Zuo J H, Zhang D T, Liu W Q, Zhang J X, Guo Z H, Li W 2013 IEEE Trans. Magn. 49 3391
[21] Li H L, Lou L, Hou F C, Guo D F, Li W, Li X H, Gunderov D, Sato K, Zhang X Y 2013 Appl. Phys. Lett. 103 142406
[22] Huang C W, Chen Z H, Chen L 2013 J. Appl. Phys. 113 094101
[23] Wang F, Zhang J, Zhang J, Wang C L, Wang Z F, Zeng H, Zhang M G, Xu X H 2013 Appl. Surf. Sci. 271 390
[24] Poudyal N, Liu J P 2013 J. Phys. D: Appl. Phys. 46 043001
[25] Liu W, Liu X H, Cui W B, Gong W J, Zhang Z D 2013 Chin. Phys. B 22 027104
[26] Shi Z, Du J, Zhou S M 2014 Chin. Phys. B 23 027503
[27] Leineweber T, Kronmller H 1997 J. Magn. Magn. Mater. 176 145
[28] Zhao G P, Zhao M G, Lim H S, Feng Y P, Ong C K 2005 Appl. Phys. Lett. 87 162513
[29] Zhao G P, Wang X L 2006 Phys. Rev. B 74 012409
[30] Asti G, Ghidini M, Pellicelli R, Pernechele C, Solzi M, Albertili F, Casoli F, Fabbrici S, Pareti L 2006 Phys. Rev. B 73 094406
[31] Cui W B, Takahashi Y K, Hono Y 2012 Adv. Mater. 24 6530
[32] Xia J, Zhao G P, Zhang H W, Cheng Z H, Feng Y P 2012 J. Appl. Phys. 112 013918
[33] Donahue M J, Porter D J 1999 OOMMF Use's Guide, Version 1.0 (Gaithersburg: National Institute of Standards and Technology)
[34] Zhang X C, Zhao G P, Xia J 2013 Acta Phys. Sin. 62 218702 (in Chinese) [张溪超, 赵国平, 夏静 2013 62 218702]
[35] Xia J, Zhang X C, Zhao G P 2013 Acta Phys. Sin. 62 227502 (in Chinese) [夏静, 张溪超, 赵国平 2013 62 227502]
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[1] Kneller E F, Hawig R 1991 IEEE Trans. Magn. 27 3588
[2] Skomski R, Coey J M D 1993 Phys. Rev. B 48 15812
[3] Schrefl T, Kronmller H, Fidler J 1993 J. Magn. Magn. Mater. 127 L273
[4] Shindo M, Ishizone M, Sakuma A, Kato H, Miyazaki T 1997 J. Appl. Phys. 81 4444
[5] Ping D H, Hono K, Hirosawa S 1998 J. Appl. Phys. 83 7769
[6] Guo Z J, Jiang J S, Pearson J E, Bader S D, Liu J P 2002 Appl. Phys. Lett. 81 2029
[7] Liu W, Zhang Z D, Liu J P, Chen L J, He L L, Liu Y, Sun X K, Sellmyer D J 2002 Adv. Mater. 14 1832
[8] Jiang J S, Pearson J E, Liu Z Y, Kabius B, Trasobares S, Miller D J, Bader S D, Lee D R, Haskel D, Srajer G, Liu J P 2004 Appl. Phys. Lett. 85 5293
[9] Zhao G P, Zhou G, Zhang H W, Feng Y P, Xian C W, Zhang Q X 2008 Comput. Mater. Sci. 44 117
[10] Feng C, Zhan Q, Li B H, Teng J, Li M H, Jiang Y, Yu G H 2009 Acta Phys. Sin. 58 3503 (in Chinese) [冯春, 詹倩, 李宝河, 滕蛟, 李明华, 姜勇, 于广华 2009 58 3503]
[11] Chen R J, Rong C B, Zhang H W, He S L, Zhang S Y, Shen B G 2004 Acta Phys. Sin. 53 4341 (in Chinese) [陈仁杰, 荣传兵, 张宏伟, 贺淑莉, 张绍英, 沈保根 2004 53 4341]
[12] Xian C W, Zhao G P, Zhang Q X, Xu J S 2009 Acta Phys. Sin. 58 3509 (in Chinese) [鲜承伟, 赵国平, 张庆香, 徐劲松 2009 58 3509]
[13] Ma B, Wang H, Zhao H B, Sun C G, Acharya R, Wang J P 2010 IEEE Trans. Magn. 46 2345
[14] Hou H C, Liao J W, Lin H J, Chang F H, Chen R Z, Chiu C H, Lai C H 2011 J. Appl. Phys. 109 07C104
[15] Belemuk A M, Chui S T 2011 J. Appl. Phys. 109 093909
[16] Guo G H, Zhang G F, Wang X G 2011 Acta Phys. Sin. 60 107503 (in Chinese) [郭光华, 张光富, 王希光 2011 60 107503]
[17] Li Z B, Shen B G, Sun J R 2013 J. Appl. Phys. 113 013902
[18] Li Z B, Shen B G, Niu E, Sun J R 2013 Appl. Phys. Lett. 103 062405
[19] Li Z B, Zhang M, Shen B G, Sun J R 2013 Appl. Phys. Lett. 102 102405
[20] Li Y Q, Yue M, Zuo J H, Zhang D T, Liu W Q, Zhang J X, Guo Z H, Li W 2013 IEEE Trans. Magn. 49 3391
[21] Li H L, Lou L, Hou F C, Guo D F, Li W, Li X H, Gunderov D, Sato K, Zhang X Y 2013 Appl. Phys. Lett. 103 142406
[22] Huang C W, Chen Z H, Chen L 2013 J. Appl. Phys. 113 094101
[23] Wang F, Zhang J, Zhang J, Wang C L, Wang Z F, Zeng H, Zhang M G, Xu X H 2013 Appl. Surf. Sci. 271 390
[24] Poudyal N, Liu J P 2013 J. Phys. D: Appl. Phys. 46 043001
[25] Liu W, Liu X H, Cui W B, Gong W J, Zhang Z D 2013 Chin. Phys. B 22 027104
[26] Shi Z, Du J, Zhou S M 2014 Chin. Phys. B 23 027503
[27] Leineweber T, Kronmller H 1997 J. Magn. Magn. Mater. 176 145
[28] Zhao G P, Zhao M G, Lim H S, Feng Y P, Ong C K 2005 Appl. Phys. Lett. 87 162513
[29] Zhao G P, Wang X L 2006 Phys. Rev. B 74 012409
[30] Asti G, Ghidini M, Pellicelli R, Pernechele C, Solzi M, Albertili F, Casoli F, Fabbrici S, Pareti L 2006 Phys. Rev. B 73 094406
[31] Cui W B, Takahashi Y K, Hono Y 2012 Adv. Mater. 24 6530
[32] Xia J, Zhao G P, Zhang H W, Cheng Z H, Feng Y P 2012 J. Appl. Phys. 112 013918
[33] Donahue M J, Porter D J 1999 OOMMF Use's Guide, Version 1.0 (Gaithersburg: National Institute of Standards and Technology)
[34] Zhang X C, Zhao G P, Xia J 2013 Acta Phys. Sin. 62 218702 (in Chinese) [张溪超, 赵国平, 夏静 2013 62 218702]
[35] Xia J, Zhang X C, Zhao G P 2013 Acta Phys. Sin. 62 227502 (in Chinese) [夏静, 张溪超, 赵国平 2013 62 227502]
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