Selective Modification of Magnetic Properties of Co1/Au/Co2/Au Multilayers by He Ion Bombardment
Selective Modification of Magnetic Properties of Co1/Au/Co2/Au Multilayers by He Ion Bombardment
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氦离子轰击选择性改性 Co1/Au/Co2/Au 多层膜的磁性能
DOI：
10.12693/aphyspola.115.326
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发表时间：
2009
期刊：
影响因子：
--
通讯作者：
A. Ehresmann
中科院分区：
文献类型：
--
作者：
M. Urbaniak;F. Stobiecki;D. Engel;B. Szymański;A. Ehresmann
结果表明，在[CO_1/Au/CO_2/Au]_4多层膜中，CO_1(2)表示不同厚度的Co层，用6×10离子cm−~2剂量的10keV He离子轰击较厚的Co层(TCO_2=1 nm)时，较薄的Co层(TCO_1=0.6 nm)的垂直各向异性保持不变。所研究的多层膜是通过溅射获得的，而Au层的厚度(tau=4 nm)确保了Co层(通过针孔)与Ruderman-Kittel-Kasuya-Yosida类相互作用之间的直接耦合可以忽略不计。
We show that in a [Co1/Au/Co2/Au]4 multilayer, where Co1(2) denote Co layers of different thicknesses, a 10 keV He-ion bombardment with a 6 × 10 ions cm−2 dose leads to changes of the easy direction from out-of-plane to in-plane in the thicker Co layers (tCo2 = 1 nm) while the perpendicular anisotropy of the thinner Co layers (tCo1 = 0.6 nm) is preserved. The investigated multilayers were obtained by sputtering and the thickness of the Au layers (tAu = 4 nm) ensured that a direct coupling between the Co layers (through pinholes) and Ruderman–Kittel–Kasuya–Yosida-like interactions were negligible.