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纳米级软硬双层磁反点。

Nanometer Scale Hard/Soft Bilayer Magnetic Antidots.

机构信息

Instituto de Física Gleb Wataghin (IFGW), Universidade Estadual de Campinas (UNICAMP), Campinas, SP, 13083-859, Brazil.

Institute of Nanoscience and Nanotechnology, NCSR "Demokritos", Aghia Paraskevi, Attiki, Athens, 15310, Greece.

出版信息

Nanoscale Res Lett. 2016 Dec;11(1):86. doi: 10.1186/s11671-016-1302-3. Epub 2016 Feb 13.

DOI:10.1186/s11671-016-1302-3
PMID:26873261
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC4752520/
Abstract

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.

摘要

已经分析了纳米级孔阵列对薄膜磁性能的影响。特别地，我们研究了由纳米孔产生的面外磁化分量对图案化硬/软磁薄膜在反点形态中的面内磁行为的影响。比较了无序和有序 35nm 直径反点的几十纳米厚 Co/Py 双层中，其对耦合的影响。磁光克尔效应（MOKE）和一阶反转曲线（FORC）技术的结合允许探测感应的垂直磁化分量对双层磁行为的影响，而磁力显微镜（MFM）用于成像。我们发现有序反点产生的面外分量比无序反点强，如果软层薄或没有软层，这会以相似的方式影响硬层的整体面内磁行为。然而，随着软层变厚，其影响会发生变化，这可能表明耦合较弱。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/73f7/4752520/d20592eae496/11671_2016_1302_Fig8_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/73f7/4752520/78aa7b0ad909/11671_2016_1302_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/73f7/4752520/64186e4d16c0/11671_2016_1302_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/73f7/4752520/53daff5b38a7/11671_2016_1302_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/73f7/4752520/e1cfbb9fc7ee/11671_2016_1302_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/73f7/4752520/46a20373e415/11671_2016_1302_Fig6_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/73f7/4752520/2a3b7c7ef5f7/11671_2016_1302_Fig7_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/73f7/4752520/d20592eae496/11671_2016_1302_Fig8_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/73f7/4752520/78aa7b0ad909/11671_2016_1302_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/73f7/4752520/64186e4d16c0/11671_2016_1302_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/73f7/4752520/53daff5b38a7/11671_2016_1302_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/73f7/4752520/e1cfbb9fc7ee/11671_2016_1302_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/73f7/4752520/46a20373e415/11671_2016_1302_Fig6_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/73f7/4752520/2a3b7c7ef5f7/11671_2016_1302_Fig7_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/73f7/4752520/d20592eae496/11671_2016_1302_Fig8_HTML.jpg

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