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Title: Structural and magnetic studies of Co layer in epitaxially grown Fe/Co bilayers

Abstract

Epitaxial Fe/Co bilayers were grown on MgO (001) substrates by molecular beam epitaxy, characterized in situ by reflection high-energy electron diffraction and ex situ by x-ray diffraction (XRD), as well as high-resolution transmission electron microscopy (HRTEM). The hexagonal close packed (hcp) structure in two perpendicular domains was identified for the Co layer using XRD and HRTEM techniques. Co is found to grow in the (11-20) orientation with the c axis in plane, parallel either to Fe[110] or Fe[1-10] The magnetic properties as a function of Co thickness in Fe (10 nm)/Co (t) (t=5-20 nm) bilayers were investigated. The Fe/Co bilayers exhibit in plane magnetization with easy axes parallel to Fe[100] and Fe[010] axes. The magnetic behavior is consistent with the orientation relationship between the Fe and Co layers.

Authors:
; ; ; ; ; ; ;  [1];  [2];  [2];  [2];  [2]
  1. Clarendon Laboratory, Department of Physics, University of Oxford, Oxford OX1 3PU (United Kingdom)
  2. (United Kingdom)
Publication Date:
OSTI Identifier:
20982856
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 101; Journal Issue: 9; Conference: 10. joint MMM/INTERMAG conference, Baltimore, MD (United States), 7-11 Jan 2007; Other Information: DOI: 10.1063/1.2672175; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; COBALT; CRYSTAL GROWTH; ELECTRON DIFFRACTION; FERROMAGNETIC MATERIALS; GRAIN ORIENTATION; HCP LATTICES; IRON; LAYERS; MAGNESIUM OXIDES; MAGNETIC PROPERTIES; MAGNETIZATION; MOLECULAR BEAM EPITAXY; SUBSTRATES; TRANSMISSION ELECTRON MICROSCOPY; X-RAY DIFFRACTION

Citation Formats

Wang, S. G., Wang, C., Kohn, A., Lee, S., Goff, J. P., Singh, L. J., Barber, Z. H., Ward, R. C. C., Department of Materials, University of Oxford, Oxford OX1 3PH, Department of Physics, University of Liverpool, Liverpool L69 7ZE, Department of Materials Science and Metallurgy, University of Cambridge, Cambridge CB2 3QZ, and Clarendon Laboratory, Department of Physics, University of Oxford, Oxford OX1 3PU. Structural and magnetic studies of Co layer in epitaxially grown Fe/Co bilayers. United States: N. p., 2007. Web. doi:10.1063/1.2672175.
Wang, S. G., Wang, C., Kohn, A., Lee, S., Goff, J. P., Singh, L. J., Barber, Z. H., Ward, R. C. C., Department of Materials, University of Oxford, Oxford OX1 3PH, Department of Physics, University of Liverpool, Liverpool L69 7ZE, Department of Materials Science and Metallurgy, University of Cambridge, Cambridge CB2 3QZ, & Clarendon Laboratory, Department of Physics, University of Oxford, Oxford OX1 3PU. Structural and magnetic studies of Co layer in epitaxially grown Fe/Co bilayers. United States. doi:10.1063/1.2672175.
Wang, S. G., Wang, C., Kohn, A., Lee, S., Goff, J. P., Singh, L. J., Barber, Z. H., Ward, R. C. C., Department of Materials, University of Oxford, Oxford OX1 3PH, Department of Physics, University of Liverpool, Liverpool L69 7ZE, Department of Materials Science and Metallurgy, University of Cambridge, Cambridge CB2 3QZ, and Clarendon Laboratory, Department of Physics, University of Oxford, Oxford OX1 3PU. Tue . "Structural and magnetic studies of Co layer in epitaxially grown Fe/Co bilayers". United States. doi:10.1063/1.2672175.
@article{osti_20982856,
title = {Structural and magnetic studies of Co layer in epitaxially grown Fe/Co bilayers},
author = {Wang, S. G. and Wang, C. and Kohn, A. and Lee, S. and Goff, J. P. and Singh, L. J. and Barber, Z. H. and Ward, R. C. C. and Department of Materials, University of Oxford, Oxford OX1 3PH and Department of Physics, University of Liverpool, Liverpool L69 7ZE and Department of Materials Science and Metallurgy, University of Cambridge, Cambridge CB2 3QZ and Clarendon Laboratory, Department of Physics, University of Oxford, Oxford OX1 3PU},
abstractNote = {Epitaxial Fe/Co bilayers were grown on MgO (001) substrates by molecular beam epitaxy, characterized in situ by reflection high-energy electron diffraction and ex situ by x-ray diffraction (XRD), as well as high-resolution transmission electron microscopy (HRTEM). The hexagonal close packed (hcp) structure in two perpendicular domains was identified for the Co layer using XRD and HRTEM techniques. Co is found to grow in the (11-20) orientation with the c axis in plane, parallel either to Fe[110] or Fe[1-10] The magnetic properties as a function of Co thickness in Fe (10 nm)/Co (t) (t=5-20 nm) bilayers were investigated. The Fe/Co bilayers exhibit in plane magnetization with easy axes parallel to Fe[100] and Fe[010] axes. The magnetic behavior is consistent with the orientation relationship between the Fe and Co layers.},
doi = {10.1063/1.2672175},
journal = {Journal of Applied Physics},
number = 9,
volume = 101,
place = {United States},
year = {Tue May 01 00:00:00 EDT 2007},
month = {Tue May 01 00:00:00 EDT 2007}
}