Epitaxy and Magnetic Properties of Surfactant-Mediated Growth of bcc Cobalt

Journal Article · Fri May 13 00:00:00 EDT 2005 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.94.187601· OSTI ID:20696268

Izquierdo, M ^[1]; Davila, M E; Franco, N ^[2]; Avila, J; Asensio, M C ^[1]; Ascolani, H ^[3]; Teodorescu, C M ^[4]; Martin, M G ^[5]; Chrost, J ^[6]; Arranz, A ^[7]

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1. Synchrotron SOLEIL, L'Orme des Merisiers, Saint-Aubin, BP 48, 91192 Gif-sur-Yvette CEDEX (France)
2. Instituto de Ciencia de Materiales, CSIC, 28049 Madrid (Spain)
3. Centro Atomico Bariloche, Comision Nacional de Energia Atomica, 8400-Bariloche (Argentina)
4. Magnetic Spectroscopy Group, Daresbury Laboratory, Warrington WA4 4AD (United Kingdom)
5. Laboratoire Photophysique Moleculaire, Centre Universitaire Paris Sud, Ba circumflex timents 210 et 350, 91405 Orsay CEDEX (France)
6. FOM-Institute for Atomic and Molecular Physics, Kruislaan 407, 1098 SJ Amsterdam (Netherlands)
7. Departamento de Fisica Aplicada C-XII, Universidad Autonoma de Madrid, 28049 Madrid (Spain)

High resolution core level photoemission spectroscopy, photoelectron diffraction, and x-ray magnetic circular dicroism (XMCD) have been used to characterize the structural and magnetic properties of bcc-cobalt films grown on GaAs(110) substrates by using Sb as a surfactant. We have unambiguously disentangled the surfactant role played by the Sb which improves the crystallinity and reduces the lattice distortion of the metallic films as well as changes the interdiffusion process at the interface compared to the Co/GaAs(110) system. As a consequence of these combined effects, an improvement on the magnetic response of the grown Co thin films has been observed by XMCD measurements.

• OSTI ID: 20696268
• Journal Information: Physical Review Letters, Vol. 94, Issue 18; Other Information: DOI: 10.1103/PhysRevLett.94.187601; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ABSORPTION SPECTRA
BCC LATTICES
COBALT
CRYSTAL GROWTH
ELECTRON DIFFRACTION
EPITAXY
FERROMAGNETIC MATERIALS
GALLIUM ARSENIDES
INTERFACES
MAGNETIC CIRCULAR DICHROISM
MAGNETIC PROPERTIES
PHOTOELECTRON SPECTROSCOPY
PHOTOEMISSION
SEMICONDUCTOR MATERIALS
SUBSTRATES
SURFACTANTS
THIN FILMS
X-RAY SPECTRA