| Original Articles |
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Structural and Magnetic Properties of Ultrathin Fe Films on Pt(001) Surface |
| ZHANG Li-Juan;HE Ke;JIA Jin-Feng;XUE Qi-Kun |
| State Key Laboratory for Surface Physics and International Centre for Quantum Structures, Institute of Physics, Chinese Academy of Sciences, Beijing 100080 |
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| Cite this article: |
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ZHANG Li-Juan, HE Ke, JIA Jin-Feng et al 2005 Chin. Phys. Lett. 22 203-206 |
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Abstract Magnetic anisotropy evolution of ultrathin Fe films grown on Pt(001) single-crystal surface is investigated by UHV in situ surface magneto-optical Kerr effect (SMOKE) measurement. After annealing at ～600K, the magnetic anisotropy of Fe film switches from in-plane to perpendicular at low coverage, leading to a spin reorientation transition (SRT). Meanwhile, in the range of 3--4 monolayer (ML) thickness, the coercivity of the Fe polar hysteresis loop decreases dramatically. Further scanning tunnelling microscopy (STM) and low energy electron diffraction (LEED) investigation correlates the magnetic properties with the film structures. We attribute this SRT to the formation of Fe--Pt ordered alloy.
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| Keywords:
75.30.Gw
75.70.Ak
75.70.Rf
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Published: 01 January 2005
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| PACS: |
75.30.Gw
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(Magnetic anisotropy)
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75.70.Ak
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(Magnetic properties of monolayers and thin films)
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75.70.Rf
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(Surface magnetism)
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