Correlation between ferromagnetic state and thermally stable layer of Fe on the W(001) surface

The variations of electronic and magnetic properties of ultrathin Fe overlayers on a W(001) surface as a function of Fe film thickness (1.0–4.0 ML) has been investigated using X-ray magnetic circular dichroism (XMCD) in conjunction with ultraviolet photoelectron spectroscopy (UPS) and low energy ele...

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Bibliographic Details
Published in:Current applied physics 2014, 14(1), , pp.68-71
Main Authors: Shin, Minjeong, Park, Byeong-Gyu, Hwang, Chanyong, Lee, Hangil
Format: Article
Language:English
Subjects:
Correlation
Deposition
Electronics
Ferromagnetic materials
Ferromagnetic state
Film thickness
Iron
LEED
Thermal stability
Thermally stable layer
UPS
XMCD
물리학
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Summary:The variations of electronic and magnetic properties of ultrathin Fe overlayers on a W(001) surface as a function of Fe film thickness (1.0–4.0 ML) has been investigated using X-ray magnetic circular dichroism (XMCD) in conjunction with ultraviolet photoelectron spectroscopy (UPS) and low energy electron diffraction (LEED). We found that the ferromagnetic property of Fe film started to build up over 2.0 ML, as we confirmed the spin and angular moment contribution to the magnetic moment using XMCD experiments. We also confirmed that a thermally stable layer is over 2.0 ML of Fe film as we change the annealing temperature taken after Fe deposition at 300 K and at 400 K using UPS. We will systematically demonstrate that the occurrence of ferromagnetic property of Fe film on a W(001) surface is closely correlated to a thermally stable layer of Fe film on a W(001) surface. •The ferromagnetic property of Fe on a W(100) surface appears over 2.0 ML.•The thermally stable layer of Fe on a W(100) surface is over 2.0 ML.•The ferromagnetic property is closely correlated to the thermally stable layer.
ISSN:1567-1739
1878-1675
DOI:10.1016/j.cap.2013.10.012