Magnetization Reversal for Ni Nanowires Studied by Micromagnetic Simulations

材料科学技术（英文）, 2009, 25(2): 151-154.

^1, , ^2, , ^3, , ^4, , ^5,

1.School of Physics Science and Technology, Central South University, Changsha 410083, China

2.School of Physics Science and Technology, Central South University, Changsha 410083, China;State Key Laboratory for Powder Metallurgy, Central South University, Changsha 410083, China

3.School of Physics Science and Technology, Central South University, Changsha 410083, China

4.School of Physics Science and Technology, Central South University, Changsha 410083, China

5.School of Physics Science and Technology, Central South University, Changsha 410083, China

Magnetization Reversal for Ni Nanowires Studied by Micromagnetic Simulations

Nianmei Han ^1, , Guanghua Guo ^2, , Lamei Zhang ^3, , Guangfu Zhang ^4, , Wenbin Song ^5,

1.School of Physics Science and Technology, Central South University, Changsha 410083, China

2.School of Physics Science and Technology, Central South University, Changsha 410083, China;State Key Laboratory for Powder Metallurgy, Central South University, Changsha 410083, China

3.School of Physics Science and Technology, Central South University, Changsha 410083, China

4.School of Physics Science and Technology, Central South University, Changsha 410083, China

5.School of Physics Science and Technology, Central South University, Changsha 410083, China

Keywords： Nanowire

The magnetization reversal mechanisms for Ni nanowires with different diameters were investigated by micromagnetic simulations. The results show that the reversal mechanisms are significantly dependent on the diameter of wire. For very thin wires, the reversal occurs by pseudo-coherent rotation. With increasing diameter, magnetization reversal takes place via different nucleation (the transverse domain wall and the vortex domain wall) and subsequent propagation. The reason of transition from the transverse domain wall to the vortex domain wall is given by analytical studies. With further increase of the diameter, the reversal nuclear domain wall becomes tundish-shaped form. As the diameter increases, the width of wall becomes larger.

参考文献

[1]	E.H.Frei;S.Shtrikman;D.Treves .[J].Physical Review,1957,106:446.
[2]	A.Aharoni;S.Shtrikman .[J].Physical Review,1958,109:1522.
[3]	R.A.McCurrie;S.Jackson .[J].IEEE Transactions on Magnetics,1980,16:1310.
[4]	G.T.A.Huysmans;J.C.Lodder .[J].Journal of Applied Physics,1988,64:2016.
[5]	H.B.Braun .[J].Journal of Applied Physics,1994,76:6310.
[6]	H.B.Braun .[J].Journal of Applied Physics,1999,85:6172.
[7]	W.Wernsdorfer;B.Doudin;D.Mailly;K.Hasselbach A.Benoit J.Meier J.Ausermet and B.Barbara .[J].Physical Review Letters,1996,77:1873.
[8]	J.E.Wegrowe;D.Kelly;A.Franck;S.E.Gilbert and J.Ph.Ansermet .[J].Physical Review Letters,1999,82:3681.
[9]	R.Ferré;K.Ounadjela;J.M.George;L.Piraux and S.Dubois .[J].Physical Review B,1997,56:14066.
[10]	B.Leven;G.Dumpich .[J].Physical Review B,2005,71:064411.
[11]	P.M.Paulus;F.Luis;M.Kr(o)ll;G.Schmid and L.J.de Jongh .[J].Journal of Magnetism and Magnetic Materials,2001,224:180.
[12]	M.Lederman;R.O'Barr;S.Schultz .[J].IEEE Transactions on Magnetics,1995,31:3793.
[13]	R.O'Barr;M.Lederman;S.S chultz .[J].Journal of Applied Physics,1996,T9:5303.
[14]	R.O'Barr;S.Sehultz .[J].Journal of Applied Physics,1997,81:5458.
[15]	G.C.Han;B.Y.Zong;P.Luo;Y.H.Wu .[J].Journal of Applied Physics,2003,93:9202.
[16]	R.Hertel .[J].Journal of Applied Physics,2001,90:5752.
[17]	R.Hertel;J.Kirschner .[J].Physica B,2004,343:206.
[18]	H. Forster;T. Schrefl;D. Suess;W. Scholz;V. Tsiantos;R. Dittrich;J. Fidler .Domain wall motion in nanowires using moving grids (invited)[J].Journal of Applied Physics,2002(10):6914-6919.
[19]	L.M.Zhang;G.H.Guo;Z.F.Liu .[J].Transactions of Nonferrous Metals Society of China,2005,15:787.
[20]	J.J.Xiao;C.Sun;D.S.Xue;F.S.Li .[J].Acta Physica Sinica,2001,50:1605.
[21]	L.D.Landau;E.M.Lifshitz .[J].Physikalische Zeitschrift der Sowjetunion,1935,8:153.
[22]	M.J.Donahue;D.G.Porter.OOMMF Userts Guide[M].National Institute of Standards and Technology,Gaithersburg,MD,1999
[23]	S.L.Whittenburga;N.Dao;C.A.Ross .[J].Physica B,2001,306:44.
[24]	K.Ounadjela;R.Ferré;L.Louail .[J].Journal of Applied Physics,1997,81:5455.
[25]	L.Piraux;S.Dubois;E.Feraln;R.Legras K.Ounadjela J.M.George J.L.Maurice and A.Fert .[J].Journal of Magnetism and Magnetic Materials,1997,165:352.
[26]	W.D.Zhong.Ferromagnetics[M].北京:科学出版社,1998

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Magnetization Reversal for Ni Nanowires Studied by Micromagnetic Simulations

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