Dynamic evolution of the magnetic anisotropy of ultrathin Co/Cu(110) films

Hope, Simon; Gu, Erdan; Tselepi, M.; Buckley, Mary; Bland, J. A. C.

doi:10.1103/physrevb.57.7454

Cited by 32 publications

(17 citation statements)

References 13 publications

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“…On the other hand, it has been reported that dosing oxygen destroys the magnetism of Co films. 13 Therefore, it would be very useful to have a comprehensive study of the effect of an oxygen surfactant on the growth and magnetic properties of Co grown on Cu(110). In this paper, we present such a study of the 0-30 ML range of Co films grown at ~350K on the Cu-(2 × 1)O surface, compared to Co films in the same thickness range grown under the same conditions on the bare Cu(110) surface.…”

Section: Introductionmentioning

confidence: 99%

Effect of oxygen surfactant on the magnetic and structural properties of Co films grown on Cu(110)

et al. 2000

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It was found that atomically flat Co(110) films could be grown on Cu(110) using O as a surfactant. To obtain detailed knowledge on the effect of O on the growth, as well as on the magnetic properties of Co overlayer, we carried out an investigation on this system using Auger Electron Spectroscopy (AES), Low Energy Electron Diffraction (LEED), Surface Magneto-Optic Kerr Effect (SMOKE), and Scanning Tunneling Microscopy (STM). With O as a surfactant, the initial growth of Co (<1 ML) results in a flat monolayer structure. When the Co is thicker than 1 ML, three-dimensional clusters begin to form. These clusters become ordered islands at 3 ML Co and coalesce at ~5 ML Co. Above 5 ML Co, layer-by-layer growth resumes. No significant Cu segregation is observed. SMOKE studies at room temperature show that the Co film is magnetic above ~5 ML Co, with the magnetization easy axis along the [001] direction.On the other hand, without using oxygen as a surfactant, Co grows three-dimensionally on Cu(110). The Co overlayer has its easy magnetization axis along the [001] direction, but the onset of the magnetization was observed at 11 ML Co at room temperature.

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Section: Introductionmentioning

confidence: 99%

Effect of oxygen surfactant on the magnetic and structural properties of Co films grown on Cu(110)

et al. 2000

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“…Unlike the layer-bylayer growth mode found on Co/Cu(1 0 0) system, the Co layer depositing on Cu(1 1 0) surface was found to have a three-dimensional growth mode for coverage below 5 ML [5,6]. In addition, the Co layer does not exhibit ferromagnetic ordering until the coverage close to 4.6 M [9,10].…”

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confidence: 61%

“…For Co/Cu(1 1 0), the Co layer has a thickness-dependent growth mode whose magnetic easy axis was also observed to lay on the surface plane but would rotate 901 from its initial direction upon the subsequent carbon monoxide adsorption [5,6]. These studies indicate that the surface crystalline is responsible for the different growth mode in ultrathin Co layer, and the magnetic structures in ultrathin films could be sensitive to its environment.…”

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confidence: 85%

Study of Co thin films deposited on low-index Cu surfaces by photoemission electron microscopy

Chan

Sun

Hsu

et al. 2006

Journal of Magnetism and Magnetic Materials

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“…The process of bilayer Co islands formation was simulated by using accelerated molecular dynamics. 8 The magnetic anisotropy of ultrathin Co/Cu͑110͒ films was discovered by Hope et al 9 ͑see also Fassbender et al 10 ͒. In the recent works magnetic properties of Co nanorods grown on Cu͑110͒ surface 11 and epitaxial growth of Co islands were explained.…”

Section: Introductionmentioning

confidence: 89%

Atomic-scale self-organization of Co nanostructures embedded into Cu(100)

2009

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Formation of constrained nanostructures from Co atoms embedded within a Cu͑100͒ surface is investigated on the atomic scale by performing molecular-dynamics and kinetic Monte-Carlo simulations. The atomic processes responsible for the linear and angular chain formations are identified. We demonstrate the key role of substrate vacancies in the motion of embedded Co atoms and investigate the self-organization of Co atoms in different conditions.

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Dynamic evolution of the magnetic anisotropy of ultrathin Co/Cu(110) films

Cited by 32 publications

References 13 publications

Effect of oxygen surfactant on the magnetic and structural properties of Co films grown on Cu(110)

Effect of oxygen surfactant on the magnetic and structural properties of Co films grown on Cu(110)

Study of Co thin films deposited on low-index Cu surfaces by photoemission electron microscopy

Atomic-scale self-organization of Co nanostructures embedded into Cu(100)

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