APP  >> Vol. 5 No. 12 (December 2015)

    Fe原子在Al基底上的扩散及薄膜生长条件对磁特性的影响
    Diffusion of Fe Atoms on Al Substrate and Effect of Film Growth Conditions on the Magnetic Properties

  • 全文下载: PDF(433KB) HTML   XML   PP.159-164   DOI: 10.12677/APP.2015.512022  
  • 下载量: 1,264  浏览量: 3,884   科研立项经费支持

作者:  

冯倩,陈俊杰,蒋丽钦,沈双娟,黄志高:福建师范大学物理与能源学院,福建 福州

关键词:
蒙特卡罗模拟Fe原子扩散磁特性Monte Carlo Simulation Diffusion of Fe Atoms Magnetic Properties

摘要:

利用蒙特卡罗方法模拟Fe原子在Al基底上的沉积、扩散,以及Fe的团簇形貌的生长演化。研究了薄膜生长条件对Fe薄膜的分形形貌及磁特性的影响。模拟结果表明,随着温度的升高,Fe微观形貌经历了一个从分散成长、分形成长到凝聚成长的变化过程;而Fe薄膜的形貌极大地影响薄膜的磁特性,具有更紧凑的分形形貌的Fe薄膜具有更高的居里温度。

A Monte Carlo technique has been developed for simulating the deposition and diffusion of Fe atoms on Al (100) surfaces, and the growth of Fe clusters. The effects of growth conditions on the Fe fractal morphology and the magnetic properties are investigated. The simulated results indicate that with increasing temperature of substrate, the surface morphology evolves from dispersed growth, fractal growth to dense growth, and finally to another dispersed growth. It is also found that the morphology of Fe film greatly affects the magnetic properties, and ramified atomic aggregate with a more compact morphology has a higher Curie temperature.

文章引用:
冯倩, 陈俊杰, 蒋丽钦, 沈双娟, 黄志高. Fe原子在Al基底上的扩散及薄膜生长条件对磁特性的影响[J]. 应用物理, 2015, 5(12): 159-164. http://dx.doi.org/10.12677/APP.2015.512022

参考文献

[1] Avnir, D., Biham, O., Lidar, D., et al. (1998) Is the Geometry of Nature Fractal? Science, 279, 39-40.
http://dx.doi.org/10.1126/science.279.5347.39
[2] Chérifa, S.M., Bouzianea, K., Roussigné, Y., et al. (2007) Growth and Magnetic Study of Sputtered Fe/Al Multilayers. Materials Science and Engineering: B, 138, 16.
http://dx.doi.org/10.1016/j.mseb.2006.12.009
[3] Sandratskii, L.M., Şaşıoğlu, E. and Bruno, P. (2006) Exchange Interactions and Néel Temperature of a Fe Monolayer on W(001): A First-Principles Study. Physical Review B, 73, Article ID: 014430.
http://dx.doi.org/10.1103/PhysRevB.73.014430
[4] Igoshev, P.A., Efremov, A.V. and Katanin, A.A. (2015) Magnetic Exchange in α-Iron from ab Initio Calculations in the Paramagnetic Phase. Physical Review B, 91, Article ID: 195123.
http://dx.doi.org/10.1103/PhysRevB.91.195123
[5] Bruschi, P., Cagnoni, P. and Nannini, A. (1997) Temperature-Dependent Monte Carlo Simulations of Thin Metal Film Growth and Percolation. Physical Review B, 55, 7955.
http://dx.doi.org/10.1103/PhysRevB.55.7955
[6] 张佩峰, 郑小平, 贺德衍, 等. Kinetic Monte Carlo方法对薄膜生长初期表面形貌的研究[J]. 中国科学, 2007(37): 9.
[7] 许晓军, 王凤飞. 不同温度下团簇生长的Monte Carlo模拟[J]. 计算物理, 2009(26): 758.
[8] Kim, C. and Chung, Y.C. (2006) Theoretical Calculations on Atomistic Behaviors in Transition Metals (Fe, Co, Ni)-Al Multilayer System: Ab Initio Approach. Applied Surface Science, 252, 8380.
http://dx.doi.org/10.1016/j.apsusc.2005.11.044
[9] Wallenius, J., Olsson, P., Lagerstedt, C., et al. (2004) Modeling of Chromium Precipitation in Fe-Cr Alloys. Physical Review B, 69, 094103.
http://dx.doi.org/10.1103/PhysRevB.69.094103
[10] Jiang, L.Q., Shen, S.J., Zhang, J.M., et al. (2015) Monte Carlo Study on Exchange Bias and Coercivity Properties in Coupled Ferromagnetic/Antiferromagnetic Films. Physica B, 478, 22.