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Fang YP, He W, Du HF, et al. Improvement of the uniformity and dipole ferromagnetism in Co nanodots assemblies on Pb/Si(111) via step tuned dimensionality variation. Nanotechnology. 2010;21(46):465703doi: 10.1088/0957-4484/21/46/465703.
Fang, Y. P., He, W., Du, H. F., Liu, H. L., Wu, Q., Zhang, X. Q., Yang, H. T., Cheng, Z. H., & Shen, J. (2010). Improvement of the uniformity and dipole ferromagnetism in Co nanodots assemblies on Pb/Si(111) via step tuned dimensionality variation. Nanotechnology, 21(46), 465703. https://doi.org/10.1088/0957-4484/21/46/465703
Fang, Ya-Peng, et al. "Improvement of the uniformity and dipole ferromagnetism in Co nanodots assemblies on Pb/Si(111) via step tuned dimensionality variation." Nanotechnology vol. 21,46 (2010): 465703. doi: https://doi.org/10.1088/0957-4484/21/46/465703
Fang YP, He W, Du HF, Liu HL, Wu Q, Zhang XQ, Yang HT, Cheng ZH, Shen J. Improvement of the uniformity and dipole ferromagnetism in Co nanodots assemblies on Pb/Si(111) via step tuned dimensionality variation. Nanotechnology. 2010 Nov 19;21(46):465703. doi: 10.1088/0957-4484/21/46/465703. Epub 2010 Oct 25. PMID: 20972310.
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Nanotechnology. 2010 Nov 19;21(46):465703. doi: 10.1088/0957-4484/21/46/465703. Epub 2010 Oct 25.

Improvement of the uniformity and dipole ferromagnetism in Co nanodots assemblies on Pb/Si(111) via step tuned dimensionality variation.

Nanotechnology

Ya-Peng Fang, Wei He, Hai-Feng Du, Hao-Liang Liu, Qiong Wu, Xiang-Qun Zhang, Hai-Tao Yang, Zhao-Hua Cheng, Jian Shen

Affiliations

  1. State Key Laboratory of Magnetism, Institute of Physics, Chinese Academy of Sciences, Beijing, People's Republic of China.

PMID: 20972310 DOI: 10.1088/0957-4484/21/46/465703

Abstract

We fabricated quasi-one-dimensional Co nanochain assemblies and two-dimensional Co nanodot assemblies on Pb/Si(111) substrates by step decoration. The morphology and magnetic properties of these two kinds of Co nanodot assemblies were investigated by in situ scanning tunneling microscopy and magneto-optical Kerr effect measurements. It was found that the steps cannot only improve the uniformity of the Co nanodots, but also increase the critical temperature T(c). Monte Carlo simulation indicates that the ferromagnetism mainly originates from the dipolar interactions and the critical temperature T(c) can be enhanced by introducing an in-plane uniaxial magnetic anisotropy via the step tuned dimensionality variation of the nanodot assemblies.

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