Sm-Co/α-Fe双层膜和多层膜磁反转的微磁学模拟
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- 英文论文题名：Effect of structure on magnetic properties of Sm-Co/α-Fe films
- 论文作者：张军 ; 王中慧
- 英文论文作者：ZHANG Jun ; WANG Zhong Hui ; Department of Chemistry and Chemical Engineering ; Lvliang College
- 年：2016
- 作者机构：吕梁学院化学与化工系;
- 论文关键词：磁性纳米多层膜 ; 微磁学模拟 ; 磁反转 ; 矫顽力
- 英文论文关键词：magnetic nano-multilayers ; micromagnetic simulation ; magnetization reversal ; coercivity
- 会议召开时间：2016-07-19
- 会议录名称：第十五届全国金相与显微分析学术年会论文集
- 语种：中文
- 分类号：TM273
- 学会代码：EGTA
- 会议名称：第十五届全国金相与显微分析学术年会
- 会议地点：中国青海西宁
- 主办单位：中国体视学学会金相与显微分析分会
- 学会名称：中国体视学学会
- 页数：6
- 文件大小：1195k
- 原文格式：O
- 会议级别：全国
摘要
采用微磁学模拟软件OOMMF,详细研究了软/硬磁层总厚度不变,结构的变化对Sm-Co/α-Fe薄膜磁性能和磁反转过程的影响。结果显示,从双层膜变化到多层膜的过程中,不同的结构具有不同的磁性能和磁反转过程;当结构优化为Sm-Co(7.5 nm)/α-Fe(2.5 nm)/Sm-Co(5 nm)/α-Fe(2.5 nm)/Sm-Co(7.5 nm)多层膜时,最大磁能积和矫顽力相比Sm-Co(20 nm)/α-Fe(5 nm)双层膜大幅度提高,分别为1015.44 kJ.m~(-3)和18.91 kOe。此结论对高性能交换耦合类磁性薄膜的研究具有一定的指导意义。
The influence of structure on magnetization reversal process and magnetic properties of Sm-Co/a-Fe films was investigated based on micromagnetic simulation software OOMMF.The result shows that magnetization reversal process and magnetic properties change with film structures changing from bilayers to multilayers;both maximum energy product and coercivity increase greatly when the structure is optimized from Sm-Co(20 nm)/a-Fe(5 nm) bilayer to Sm-Co(7.5 nm)/a-Fe(2.5 nm)/Sm-Co(5 nm)/α-Fe(2.5 nm)/Sm-Co(7.5 nm)multilayer,This conclusion is of certain guiding significance for research of high-performance exchanged coupled magnetic films.
The influence of structure on magnetization reversal process and magnetic properties of Sm-Co/a-Fe films was investigated based on micromagnetic simulation software OOMMF.The result shows that magnetization reversal process and magnetic properties change with film structures changing from bilayers to multilayers;both maximum energy product and coercivity increase greatly when the structure is optimized from Sm-Co(20 nm)/a-Fe(5 nm) bilayer to Sm-Co(7.5 nm)/a-Fe(2.5 nm)/Sm-Co(5 nm)/α-Fe(2.5 nm)/Sm-Co(7.5 nm)multilayer,This conclusion is of certain guiding significance for research of high-performance exchanged coupled magnetic films.
引文
[1]Skomski R.Aligned Two-phase Magnets:Permanent Magnetism of Future[J].J Appl phy,1994,76(10):7059-7 064.
[2]Wang F,Zhang J,Zhang J,et al.FePt:C/Fe graded and non-graded films with controllable coercivity fabricated by magnetron sputtering and post-annealing[J].J Appl Phys,2011,109(7):07B731-07B731-3.
[3]Liu J P,Liu Y,Skomski R,et al.Magnetic hardening in SmCo_x-Co multilayers and nanocomposites[J].J Appl Phys,1999,85(8):4812-4814.
[4]Nagahama T,Mibu K,Shinjo T.The magnetization process and magnetoresistance of exchange-spring bilayer systems[J].J Phys D:Appl Phys,1998,31(1):43-49
[5]Skomski R,Coey J M D.Giant energy product in nanostructured two-phase magnets[J].Phys Rev B,1993,48(21):15812-15816.
[6]Kneller E F,Hawig R.The exchange-spring magnet:a new material principle for permanent magnets[J].IEEE Trans Magn,1991,27(4):3588-3600.
[7]Fullerton E E,Jiang J S,Grimsditch M,et al.Exchange-spring behavior in epitaxial hard/soft magnetic bilayers[J].Phys Rev B,1998,58(18):12193-12200.
[8]张佳,张敏刚.Sm-Co/α-Fe/Sm-Co三层膜磁性能的微磁学模拟川.中国稀土学报,2011,29(5):528-532.
[9]Sawatzki S,Heller R,Mickel C,et al.Largely enhanced energy density in epitaxial SmCo_5/Fe/SmCo_5exchange spring trilayers[J].J Appl Phys,2011,109(12):123922-123933-7.
[10]Guo N L,Zhao G P,Zhang H W,et al.Magnetic reversal processes and critical thickness in FePt/a-Fe/FePt trilayers[J].J Magn Magn Mater,2011,323(23):3049-3053.
[11]Neu V,Sawatzki S,Schultz L.Imaging the magnetization processes in epitaxial exchange coupled SmCo_5/Fe/SmCo_5 trilayers[J].IEEE Trans Magn,2012,48(11):3644-3647.
[12]Kopte M,Sawatzki S,Schultz L.The nucleation of the spin spiral in epitaxial SmCo_5/Fe/SmCo_5 exchange spring trilayers[J].IEEE Trans Magn,2011,47(10):3736-3739.
[13]Wang W,Zhao G P,Yuan X H,et al.3D and ID micromagnetic calculation for hard/soft bilayers with in-plane easy axes[J].J Magn Magn Mater,2012,324(24):4232-4236.
[14]Zhang J,Liu Y,Xu X H,et al.Design and micromagnetic simulation of the Il0-FePt/Fe multilayer graded film[J].J Appl Phys,2012,111(7):073910-073910-4.
[15]徐建川,刘颖,李军,等.B含量对Nd_2Fe_(14)B/Fe_3B复合永磁材料微观结构和磁性能的影响[J].磁性材料及器件,2009,40(2):22-24.
[16]Durst K D,Kronmuller H,Ervens W.Investigations of the magnetic properties and demagnetization processes of an extremely high coercive Sm(Co,Cu,Fe,Zr)_(7.6)permanent magnet.I.Determination of intrinsic magnetic material parameters[J].Phys Stat Sol(a),1998,108(1):403-416.
[2]Wang F,Zhang J,Zhang J,et al.FePt:C/Fe graded and non-graded films with controllable coercivity fabricated by magnetron sputtering and post-annealing[J].J Appl Phys,2011,109(7):07B731-07B731-3.
[3]Liu J P,Liu Y,Skomski R,et al.Magnetic hardening in SmCo_x-Co multilayers and nanocomposites[J].J Appl Phys,1999,85(8):4812-4814.
[4]Nagahama T,Mibu K,Shinjo T.The magnetization process and magnetoresistance of exchange-spring bilayer systems[J].J Phys D:Appl Phys,1998,31(1):43-49
[5]Skomski R,Coey J M D.Giant energy product in nanostructured two-phase magnets[J].Phys Rev B,1993,48(21):15812-15816.
[6]Kneller E F,Hawig R.The exchange-spring magnet:a new material principle for permanent magnets[J].IEEE Trans Magn,1991,27(4):3588-3600.
[7]Fullerton E E,Jiang J S,Grimsditch M,et al.Exchange-spring behavior in epitaxial hard/soft magnetic bilayers[J].Phys Rev B,1998,58(18):12193-12200.
[8]张佳,张敏刚.Sm-Co/α-Fe/Sm-Co三层膜磁性能的微磁学模拟川.中国稀土学报,2011,29(5):528-532.
[9]Sawatzki S,Heller R,Mickel C,et al.Largely enhanced energy density in epitaxial SmCo_5/Fe/SmCo_5exchange spring trilayers[J].J Appl Phys,2011,109(12):123922-123933-7.
[10]Guo N L,Zhao G P,Zhang H W,et al.Magnetic reversal processes and critical thickness in FePt/a-Fe/FePt trilayers[J].J Magn Magn Mater,2011,323(23):3049-3053.
[11]Neu V,Sawatzki S,Schultz L.Imaging the magnetization processes in epitaxial exchange coupled SmCo_5/Fe/SmCo_5 trilayers[J].IEEE Trans Magn,2012,48(11):3644-3647.
[12]Kopte M,Sawatzki S,Schultz L.The nucleation of the spin spiral in epitaxial SmCo_5/Fe/SmCo_5 exchange spring trilayers[J].IEEE Trans Magn,2011,47(10):3736-3739.
[13]Wang W,Zhao G P,Yuan X H,et al.3D and ID micromagnetic calculation for hard/soft bilayers with in-plane easy axes[J].J Magn Magn Mater,2012,324(24):4232-4236.
[14]Zhang J,Liu Y,Xu X H,et al.Design and micromagnetic simulation of the Il0-FePt/Fe multilayer graded film[J].J Appl Phys,2012,111(7):073910-073910-4.
[15]徐建川,刘颖,李军,等.B含量对Nd_2Fe_(14)B/Fe_3B复合永磁材料微观结构和磁性能的影响[J].磁性材料及器件,2009,40(2):22-24.
[16]Durst K D,Kronmuller H,Ervens W.Investigations of the magnetic properties and demagnetization processes of an extremely high coercive Sm(Co,Cu,Fe,Zr)_(7.6)permanent magnet.I.Determination of intrinsic magnetic material parameters[J].Phys Stat Sol(a),1998,108(1):403-416.