Surface morphology and structure of ultra-thin magnesium oxide grown on (100) silicon by atomic layer deposition oxidation

被引:11
作者
Rochdi, N. [1 ]
Liudvikouskaya, K. [2 ]
Descoins, M. [1 ]
Raissi, M. [1 ]
Coudreau, C. [1 ]
Lazzari, J. -L. [1 ]
Oughaddou, H. [3 ,4 ]
D'Avitaya, F. Arnaud [1 ]
机构
[1] Univ Aix Marseille, Ctr Interdisciplinaire Nanosci Marseille CINaM, CNRS, UPR 3118, F-13288 Marseille 9, France
[2] Belarusian State Univ Informat & Radioelect, Minsk 220013, BELARUS
[3] DSM IRAMIS SPCSI, Commissariat Energie Atom, F-91191 Gif Sur Yvette, France
[4] Univ Cergy Pontoise, LAMAp, F-95000 Cergy Pontoise, France
关键词
Magnesium oxide; Diffusion; Silicon; High-Resolution Transmission Electron; Microscopy; Atomic Force Microscopy; Ultra-thin films; Atomic layer deposition oxidation; Low-energy electron diffraction; ELECTRICAL SPIN INJECTION; FILMS; FUNDAMENTALS; SPINTRONICS;
D O I
10.1016/j.tsf.2011.04.005
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Ultra-thin magnesium oxide layers were elaborated by atomic layer deposition and oxidation process on silicon (100) starting from (2 x 1) thermally-reconstructed or hydrogen-terminated Si surfaces. Low-energy electron diffraction experiments show (2 x 3) and (3 x 3) reconstructions while depositing a magnesium monolayer on Si clean surfaces, and a 3-dimentional growth of the oxide as confirmed by ex-situ atomic force microscopy. For hydrogen-terminated or clean surfaces previously physisorbed by oxygen, uniform cobalt/magnesium-oxide/silicon stacks of layers are observed by transmission electron microscopy. Annealing above 150 degrees C leads to MgO dissolution and formation of an interfacial complex compound by inter-diffusion of Si and Co. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码:6302 / 6306
页数:5
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