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Epitaxial Fe/MgO heterostructures on GaAs(0 0 1)

AuthorsMartínez Boubeta, Carlos ; Navarro, E. ; Cebollada, Alfonso ; Briones Fernández-Pola, Fernando ; Peiró, F.; Cornet, A.
Magnetic materials
Issue DateJun-2001
CitationJournal of Crystal Growth 226: 223-230 (2001)
AbstractEpitaxy of high quality Fe/MgO heterostructures on GaAs(0 0 1) substrates has been achieved by combined use of sputtering and laser ablation deposition techniques. Growths of Fe thin structures on MgO buffered GaAs is studied for a wide range of deposition temperatures. The Fe crystalline quality continuously increase with deposition temperature although a transition from 2D continuous films towards discontinuous 3D-like Fe structures is found between 300°C and 400°C. Insulator on metal epitaxy is also confirmed as MgO layers are found to epitaxially grow on previously deposited Fe/MgO/GaAs thin films. From these results, it is shown that Fe/MgO superlattices can be fabricated on semiconductor substrates by appropriate selection of growth conditions.
Publisher version (URL)http://dx.doi.org/10.1016/S0022-0248(01)01397-5
Appears in Collections:(IMN-CNM) Artículos
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