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垂直取向L1_0 FePt纳米粒子的磁性 被引量：4

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摘要 用磁控溅射法在加热到700℃的MgO(001)基板上沉积了FePt薄膜.依靠基板与薄膜间的晶格失配,形成了磁化易轴垂直于基板平面的L10相(001)织构.膜厚为5nm时得到了直径约70nm的纳米粒子,4.2K温度下其矫顽力达105kOe(1Oe=79.58A/m).膜厚增加到50nm时,薄膜由不连续变化为连续,矫顽力下降了一个数量级.用微磁学方法对单畴粒子的自发磁化和磁化反转过程进行了模拟.结果表明,磁化反转机制是涡旋式的成核,模拟矫顽力为121kOe.这意味着实验获得的矫顽力已经接近理想单晶单磁畴粒子矫顽力的极限.
作者 莫小静 向晖 李国庆 陈鹏 熊祖洪 王俊忠 石尾俊二 齐藤准 屿敏之 高梨弘毅
机构地区 西南大学物理科学与技术学院 秋田大学工学资源学部 东北大学金属材料研究所
出处 《科学通报》 EI CAS CSCD 北大核心 2010年第7期534-540,共7页 Chinese Science Bulletin
基金 重庆市自然科学基金(编号:CSTC2009BB8102) 西南大学博士基金(编号:SWUB2006031)资助项目
关键词 L10 FePt纳米粒子 矫顽力 磁化反转 磁畴
分类号 O482.5 [理学—固体物理]
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参考文献37

  • 1Xiao M, Do H, Weresin W, et al. Recording studies of perpendicular media leading to 230 Gb/in2. J Appl Phys, 2006, 99:08E712.
  • 2Lodder J C. Magnetic structures in Co-Cr media for perpendicular magnetic recording. J Magn Magn Mater, 1996, 159:238--248.
  • 3Ouchi K. Recent advancements in perpendicular magnetic recording. IEEE Trans Magn, 2001, 37:1217-1222.
  • 4Wood R. The feasibility of magnetic recording at 1 Terabit per square inch. IEEE Trans Magn, 2000, 36:36-42.
  • 5Zhuang Z. Effects of stoichiometry on the magnetic and structural properties of perpendicular barium ferrite thin film media. IEEE Trans Magn, 2000, 36:2405--2407.
  • 6Speliotis D E. Magnetic recording beyond the first 100 years. J Magn Magn Mater, 1999, 193:29--35.
  • 7Weller D, Moser A, Folks L, et al. High Ku materials approach to 100 Gbits/in2. IEEE Trans Magn, 2000, 36:10 15.
  • 8Verdes C, Chantrell R W, Satoh A, et al. Self-organization, orientation and magnetic properties of FePt nanoparticle arrays. J Magn Magn Mater, 2006, 304:27--31.
  • 9Kuo C M, Kuo P C, Wu H C. Microstructure and magnetic properties of Fe100-xPtx alloy films. J Appl Phys, 1999, 85:2264--2269.
  • 10Xu Y F, Chen J S, Wang J P. In situ ordering of FePt thin films with face-centered-tetragonal (001) texture on Cr100-xRux underlayer at low substrate temperature. Appl Phys Lett, 2002, 80:3325--3327.

同被引文献72

  • 1Skomski R. Nanomagnetics. J Phys: Condens Matter, 2003, 15:R841-R896.
  • 2Weller D, Moser A, Folks L, et al. High Ku materials approach to 100 Gbits/in2. IEEE Trans Magn, 2000, 36:10-15.
  • 3Sun S. Recent advances in chemical synthesis, self-assembly, and applications of FePt nanoparticles. Adv Mater, 2006, 18:393-403.
  • 4Ristau R A, Barmak K, Lewis L H, et al. On the relationship of high coercivity and L10 ordered phase in CoPt and FePt thin films. J Appl Phys, 1999, 86:4527-4533.
  • 5Takahashi Y, Matsubara E, Kawazoe Y, et al. Reconstruction of atomic images from multiple-energy X-ray holograms of FePt films by the scattering pattern matrix method. Appl Phys Lett, 2005, 87:234104.
  • 6Shima T, Takanashi K, Takahashi Y K, et al. High coercivity and magnetic domain observation in epitaxially grown particulate FePt thin films. J Magn Magn Mater, 2003, 266:171-177.
  • 7Zhang Y, Wan J, Skumryev V, et al. Microstructural characterization of L10 FePt/MgO nanoparticles with perpendicular anisotropy. Appl Phys Lett, 2004, 85:5343-5345.
  • 8Ross C A. Patterned magnetic recording media. Annu Rev Mater Res, 2001, 31:203-235.
  • 9Lomakin V, Choi R, Livshitz B, et al. Dual-layer patterned media "ledge" design for ultrahigh density magnetic recording. Appl Phys Lett, 2008, 92:022502.
  • 10Albrecht M, Ganesan S, Rettner C T, et al. Patterned perpendicular and longitudinal media: A magnetic recording study. IEEE Trans Magn, 2003, 39:2323-2325.

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科学通报
2010年 第7期

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