Growth and magnetic properties of ultrathin Fe films on Pt(1 1 1)
Auger electron spectroscopy (AES), low-energy electron diffraction (LEED), and surface magneto-optical Kerr effect (SMOKE) were used to investigate the growth mode, alloy formation, and magnetic properties of ultrathin Fe films deposited on Pt(1 1 1) surface. The growth mode of Fe films on Pt(1 1 1)...
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Published in | Surface science Vol. 601; no. 18; pp. 4334 - 4338 |
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Main Authors | , , , |
Format | Journal Article Conference Proceeding |
Language | English |
Published |
Lausanne
Elsevier B.V
15.09.2007
Amsterdam Elsevier Science New York, NY |
Subjects | |
Online Access | Get full text |
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Summary: | Auger electron spectroscopy (AES), low-energy electron diffraction (LEED), and surface magneto-optical Kerr effect (SMOKE) were used to investigate the growth mode, alloy formation, and magnetic properties of ultrathin Fe films deposited on Pt(1
1
1) surface. The growth mode of Fe films on Pt(1
1
1) at RT is at least 3
ML layer-by-layer growth before three-dimensional island growth begins. When the thickness of Fe films was 1
ML, no Kerr signal is observed at room temperature. Both the polar and longitudinal Kerr signals can be detected when the thickness of Fe films (
d
Fe) is 1.5
ML. When the thickness of Fe films is higher than 1.5
ML, only the longitudinal Kerr signal can be observed. The easy axis of the magnetization is in the in-plane direction when
d
Fe
>
1.5
ML. After the formation of Fe–Pt surface alloy for 5
ML Fe ultrathin films on a flat Pt(1
1
1) surface, the Kerr signal and the coercivity enhance to 150% and 1100%, respectively. The formation of Fe–Pt surface alloy was confirmed by AES. The evolutions of the magnetic properties are strongly relative to the diffusion process of Fe thin films into Pt substrate. |
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Bibliography: | SourceType-Scholarly Journals-2 ObjectType-Feature-2 ObjectType-Conference Paper-1 content type line 23 SourceType-Conference Papers & Proceedings-1 ObjectType-Article-3 ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 |
ISSN: | 0039-6028 1879-2758 |
DOI: | 10.1016/j.susc.2007.04.121 |