Structural study of Co/Pd(111) and CO/Co/Pd(111) by surface X-ray absorption fine structure spectroscopy

Miyawaki, Jun; Matsumura, Daiju; Nojima, Akihiro; Yokoyama, Toshihiko; Ohta, Toshiaki

doi:10.1016/j.susc.2006.09.009

Cited by 16 publications

(16 citation statements)

References 40 publications

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“…According to a Co 2p photoelectron diffraction study, a Co thin film on Pd͑111͒ has a fcc structure at least up to 20 ML. 34 Co K-edge extended x-ray absorption fine structure ͑EXAFS͒ study also confirmed that Co films keep a fcc structure, 35 which is different from the hcp structure in bulk Co. Although the crystal structures are different from each other, the top layer structure of fcc͑111͒ is same as that of hcp͑0001͒.…”

Section: Resultsmentioning

confidence: 78%

“…Such a different adsorption behavior of the Co thin film might come from imperfection in the surface morphology and perturbation in the electronic structure, since the incoherently grown Co thin film has a fcc structure on Pd͑111͒. 34,35 However, there is no significant difference in the CO adsorption structure between hcp Co͑0001͒ and fcc Co͑111͒ at 300 K. This is because CO on the atop site is less influenced by the lower layer of the Co substrate.…”

Section: A Comparison With the Co Adsorption On Hcp"0001… Comentioning

confidence: 99%

“…In contrast to the Ni films, Co films retain bulk lattice spacing indifferent of the Pd substrate. 35 Although the strong interface magnetocrystalline anisotropy favors the out-of-plane magnetization, 12 the bare Co/ Pd͑111͒ exhibits the in-plane magnetization above 3.5 ML thickness. For the multilayer Co/ Pd͑111͒ systems, the critical thickness has been reported to be about 9 ML.…”

Section: B Origin Of the Spin Reorientation Transitionmentioning

confidence: 99%

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Surface structure of CO on Co∕Pd(111) magnetic thin films and its effect on the spin reorientation transition of the film

et al. 2006

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The CO surface structures on Co/ Pd͑111͒ magnetic thin film and the chemisorption-driven spin reorientation transition have been studied by soft x-ray spectroscopies. C 1s photoelectron diffraction for CO/ Co/ Pd͑111͒ revealed that CO is adsorbed both on the atop and bridge sites at 200 K, while CO is adsorbed exclusively on the atop site at 300 K. From simultaneous measurement of C 1s photoelectron spectroscopy and Co L-edge x-ray magnetic circular dichroism during stepwise CO adsorption and annealing, it was concluded that the spin reorientation transition is induced not by a thermodynamical effect but by the CO adsorption on the bridge site. These results show that the adsorption structure has a significant effect on the surface magnetic anisotropy of the thin film.

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Section: Resultsmentioning

confidence: 78%

Section: A Comparison With the Co Adsorption On Hcp"0001… Comentioning

confidence: 99%

Section: B Origin Of the Spin Reorientation Transitionmentioning

confidence: 99%

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Surface structure of CO on Co∕Pd(111) magnetic thin films and its effect on the spin reorientation transition of the film

et al. 2006

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“…1(c). The characteristic peak structures of the two [16] resemble well, which are the first peak at 2.2Å −1 and the double peak structure around 4-5Å −1 . Though further analyses and careful treatments are required, the whole structures are in good agreement each other.…”

Section: Resultsmentioning

confidence: 61%

Development of surface sensitive DXAFS measurement method by applying Kramers-Kronig relations to total reflection spectra

Abe

Niwa

Nitani

et al. 2014

J. Phys.: Conf. Ser.

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“…In the case of the (111) surface we can compare our distance with an EXAFS-derived experimental distance z Co-Pd =2.02Å (Ref. 18) and with an ab initio equilibrium distance z Co-Pd =1.91Å (Ref. 19).…”

mentioning

confidence: 96%

Co monolayers and adatoms on Pd(100), Pd(111), and Pd(110): Anisotropy of magnetic properties

et al. 2013

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We investigate to what extent the magnetic properties of deposited nanostructures can be influenced by selecting as a support different surfaces of the same substrate material. Fully relativistic ab initio calculations were performed for Co monolayers and adatoms on Pd(100), Pd(111), and Pd (110) surfaces. Changing the crystallographic orientation of the surface has a moderate effect on the spin magnetic moment and on the number of holes in the d band, a larger effect on the orbital magnetic moment but sometimes a dramatic effect on the magnetocrystalline anisotropy energy (MAE) and on the magnetic dipole term Tα. The dependence of Tα on the magnetization direction α can lead to a strong apparent anisotropy of the spin magnetic moment as deduced from the X-ray magnetic circular dichroism (XMCD) sum rules. For systems in which the spin-orbit coupling is not very strong, the Tα term can be understood as arising from the differences between components of the spin magnetic moment associated with different magnetic quantum numbers m.

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Structural study of Co/Pd(111) and CO/Co/Pd(111) by surface X-ray absorption fine structure spectroscopy

Cited by 16 publications

References 40 publications

Surface structure of CO on Co∕Pd(111) magnetic thin films and its effect on the spin reorientation transition of the film

Surface structure of CO on Co∕Pd(111) magnetic thin films and its effect on the spin reorientation transition of the film

Development of surface sensitive DXAFS measurement method by applying Kramers-Kronig relations to total reflection spectra

Co monolayers and adatoms on Pd(100), Pd(111), and Pd(110): Anisotropy of magnetic properties

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