Patterning of magnetic structures on austenitic stainless steel by local ion beam nitriding

被引:18
作者
Menendez, E. [1 ]
Martinavicius, A. [2 ]
Liedke, M. O. [2 ]
Abrasonis, G. [2 ]
Fassbender, J. [2 ]
Sommerlatte, J. [3 ]
Nielsch, K.
Surinach, S. [1 ]
Baro, M. D. [1 ]
Nogues, J. [4 ]
Sort, J. [1 ,5 ]
机构
[1] Univ Autonoma Barcelona, Dept Fis, Bellaterra 08193, Spain
[2] Forschungszentrum Dresden Rossendorf, Inst Ion Beam Phys & Mat Res, D-01314 Dresden, Germany
[3] Max Planck Inst Microstruct Phys, D-06120 Halle, Germany
[4] Inst Catala Nanotecnol, Bellaterra 08193, Spain
[5] Univ Autonoma Barcelona, ICREA, Bellaterra 08193, Spain
关键词
Ion beam processing; X-ray diffraction (XRD); Austenitic steels; Interstitial diffusion; Magnetic patterning;
D O I
10.1016/j.actamat.2008.05.014
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Periodic arrays of ferromagnetic structures with micrometer and submicrometer lateral sizes have been prepared at the surface of a paramagnetic austenitic stainless steel by means of ion beam nitriding throulgh different types of shadow masks (such as transmission electron microscopy grids or self-assembled porous alumina membranes). This method takes advantage of the formation of the ferromagnetic supersaturated nitrogen solid solution gamma(N) phase (i.e., expanded austenite) upon nitriding at moderate temperatures. The local character of the induced ferromagnetism is confirmed by magneto-optical Kerr effect measurements together with magnetic force microscopy imaging. Furthermore, the influence of the nitriding temperature and time on the induced ferromagnetic and structural properties has been analyzed. (C) 2008 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码:4570 / 4576
页数:7
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