Morphology of epitaxial metallic layers on MgO substrates: influence of submonolayer carbon contamination

被引：23

作者：

Rickart, M ^{[1
]}

Roos, BFP ^{[1
]}

Mewes, T ^{[1
]}

Jorzick, J ^{[1
]}

Demokritov, SO ^{[1
]}

Hillebrands, B ^{[1
]}

机构：

[1] Univ Kaiserslautern, Fachbereich Phys & Forschungs & Entwicklungsschwe, D-67663 Kaiserslautern, Germany

来源：

SURFACE SCIENCE | 2001年 / 495卷 / 1-2期

关键词：

molecular beam epitaxy; ion bombardment; surface structure; morphology; roughness; and topography; carbon; magnesium oxides; metal-metal magnetic thin film structures;

D O I：

10.1016/S0039-6028(01)01504-7

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

By investigating the epitaxial growth of Ag(0 0 1) and Au(0 0 1) films and Fe/Ag(0 0 1) and Fe/Au(0 0 1) layered systems on MgO(0 0 1) the influence of carbon contamination of the MgO surface on the morphology of the obtained films is studied. A new technique for the preparation of carbon-free MgO(0 0 1) surfaces using ion beam oxidation is reported. This technique takes advantage of the high chemical activity of dissociated low energy oxygen atoms, which removes the carbon contamination from the MgO surface as confirmed by Auger electron spectroscopy. It is shown that metallic layers grown on carbon-free MgO substrates demonstrate reduced roughness, improved crystallographic quality and enhanced surface magnetic anisotropy compared to those grown on carbon contaminated substrates. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：68 / 76

页数：9

共 34 条

[11] An IR-transmission spectroscopical study of the influence of substrate surface defects on the morphology and the electronic structure of ultrathin Fe grown on MgO(001) [J].