期刊
APPLIED PHYSICS LETTERS
卷 104, 期 24, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4883860
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资金
- Department of Science and Technology, Government of India
- British Council for the DST-UKIERI [DST/INT/UK/P-44/2012]
- EPSRC [EP/G010897/1]
- UK CRG XMaS beam-line at ESRF
- Engineering and Physical Sciences Research Council [EP/L000121/1, EP/G010897/1, EP/K031414/1] Funding Source: researchfish
- EPSRC [EP/G010897/1, EP/L000121/1, EP/K031414/1] Funding Source: UKRI
The influence of interfacial intermixing on the picosecond magnetization dynamics of ferromagnetic/non-magnetic thin-film bilayers was studied. Low-dose focused-ion-beam irradiation was used to induce intermixing across the interface between a 10 nm Ni81Fe19 layer and a 2-3 nm capping layer of either Au or Cr. Time-resolved magneto-optical Kerr effect was used to study magnetization dynamics as a function of ion-beam dose. With an Au cap, the damping of the un-irradiated bilayer was comparable with native Ni81Fe19 and increased with increasing ion dose. In contrast, for Ni81Fe19/Cr the damping was higher than that for native Ni81Fe19, but the damping decreased with increasing dose. (C) 2014 AIP Publishing LLC.
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