Combinatorial pulsed laser deposition of Fe/MgO granular multilayers

Combinatorial pulsed laser deposition (PLD) makes use of the angular spread of laser-ablated material to prepare thin films with lateral compositional gradient. In this paper we have used combinatorial PLD to grow discontinuous Fe/MgO multilayers by alternate ablation from two separate Fe and MgO ta...

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Bibliographic Details
Published in:Applied physics. A, Materials science & processing Materials science & processing, 2012-06, Vol.107 (4), p.871-876
Main Authors: García-García, A., Pardo, J. A., Navarro, E., Štrichovanec, P., Vovk, A., Morellón, L., Algarabel, P. A., Ibarra, M. R.
Format: Article
Language:English
Subjects:
Characterization and Evaluation of Materials
Condensed Matter Physics
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Electronic transport in condensed matter
Exact sciences and technology
Machines
Manufacturing
Nanotechnology
Optical and Electronic Materials
Physics
Physics and Astronomy
Processes
Spin polarized transport
Surfaces and Interfaces
Thin Films
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Summary:Combinatorial pulsed laser deposition (PLD) makes use of the angular spread of laser-ablated material to prepare thin films with lateral compositional gradient. In this paper we have used combinatorial PLD to grow discontinuous Fe/MgO multilayers by alternate ablation from two separate Fe and MgO targets. Films of composition [Fe( t Fe )/MgO( t MgO )] 15 were deposited on glass substrates. The thickness of Fe and MgO were varied in the vicinity of critical values determined in previous studies to maximize the tunneling magnetoresistance (TMR) in the current-in-plane configuration. Optimized multilayers show a substantial improvement of both TMR and field sensitivity at room temperature.
ISSN:0947-8396
1432-0630
DOI:10.1007/s00339-012-6808-7