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Izquierdo M, Dávila ME, Avila J, Ascolani H, Teodorescu CM, Martin MG, Franco N, Chrost J, Arranz A, Asensio MC. Epitaxy and magnetic properties of surfactant-mediated growth of bcc cobalt. PHYSICAL REVIEW LETTERS 2005; 94:187601. [PMID: 15904410 DOI: 10.1103/physrevlett.94.187601] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2004] [Indexed: 05/02/2023]
Abstract
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.
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Affiliation(s)
- M Izquierdo
- Synchrotron SOLEIL, L'Orme des Merisiers, Saint-Aubin, BP 48, 91192 Gif-sur-Yvette CEDEX, France
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