期刊
NANOSCALE RESEARCH LETTERS
卷 11, 期 -, 页码 -出版社
SPRINGEROPEN
DOI: 10.1186/s11671-016-1302-3
关键词
Exchange-spring magnets; Structured magnetic thin films; Magnetic antidot arrays; First-order reversal curve (FORC); Magneto-optical Kerr effect (MOKE)
资金
- i-Link project Magnetic antidots
- Consejo Superior de Investigaciones Cientificas (CSIC, Spain)
- Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP, Brazil)
- MINECO [MAT2014-59772-C2-1-P]
- Comunidad de Madrid [Nanofrontmag]
- CSIC [201460E014]
- CAPES Brazilian funding agency
- E.C. through a FP7-ICT project [318144]
The effect of arrays of nanometer scale pores on the magnetic properties of thin films has been analyzed. Particularly, we investigated the influence of the out-of-plane magnetization component created by the nanopores on the in-plane magnetic behavior of patterned hard/soft magnetic thin films in antidot morphology. Its influence on the coupling in Co/Py bilayers of few tens of nanometer thick is compared for disordered and ordered antidots of 35-nm diameter. The combination of magneto-optical Kerr effect (MOKE) and first-order reversal curve (FORC) technique allows probing the effects of the induced perpendicular magnetization component on the bilayer magnetic behavior, while magnetic force microscopy (MFM) is used to image it. We found that ordered antidots yield a stronger out-of-plane component than disordered ones, influencing in a similar manner the hard layer global in-plane magnetic behavior if with a thin or without soft layer. However, its influence changes with a thicker soft layer, which may be an indication of a weaker coupling.
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