OXIDATION OF THE FE/CU(100) INTERFACE

被引：25

作者：

LOZZI, L ^{[1
]}

PASSACANTANDO, M ^{[1
]}

PICOZZI, P ^{[1
]}

SANTUCCI, S ^{[1
]}

DENDAAS, H ^{[1
]}

机构：

[1] UNIV UTRECHT, DEBYE INST, DIV SURFACE SCI, 3508 TB UTRECHT, NETHERLANDS

来源：

SURFACE SCIENCE | 1995年 / 331卷

关键词：

OXIDATION; SINGLE CRYSTAL EPITAXY; VISIBLE AND ULTRAVIOLET PHOTOELECTRON SPECTROSCOPY; X-RAY PHOTOELECTRON SPECTROSCOPY;

D O I：

10.1016/0039-6028(95)00067-4

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：

The interaction between oxygen and the Fe/Cu(100) interface has been studied as a function of both the iron thickness and the oxygen exposure by means of UPS and XPS spectroscopies. A careful analysis of the Fe 2p spectra has shown that upon exposing Fe thin films (0.5-10 ML) to 10(4) L of oxygen there is always the formation of Fe2O3. Instead, when a copper surface containing 0.5 and 1 ML of iron has been exposed to increasing amounts of oxygen (1-10(4) L), the presence of both Fe2+ and Fe3+ is evident in the middle stage of the oxidation. The UPS spectra have shown a strong decrease of the Cu3d features when the Fe/Cu interface has been exposed to oxygen, even for very thin Fe films (0.5-1 ML). This behaviour can be interpreted in terms of a sizeable decrease of the mean free path of low energy valence band electrons when the iron film is oxidized with respect to that observed in metallic iron films.

引用

页码：703 / 709

页数：7

共 18 条

[1] SCANNING-TUNNELING-MICROSCOPY ON THE GROWTH OF FE FILMS ON CU(100) [J].

BRODDE, A ;

NEDDERMEYER, H .

SURFACE SCIENCE, 1993, 287 :988-994

[2] THE INTERACTION OF CU(100)-FE SURFACES WITH OXYGEN STUDIED BY X-RAY PHOTOELECTRON-SPECTROSCOPY [J].

DENDAAS, H ;

PASSACANTANDO, M ;

LOZZI, L ;

SANTUCCI, S ;

PICOZZI, P .

SURFACE SCIENCE, 1994, 317 (03) :295-302

[3] OXIDATION OF ULTRATHIN IRON LAYERS ON CU(100) - COMPOSITION OF THE OXIDE-FILMS [J].

DENDAAS, H ;

GIJZEMAN, OLJ ;

GEUS, JW .

SURFACE SCIENCE, 1993, 285 (1-2) :15-26

[4] LOW-ENERGY AUGER-ELECTRON SPECTROSCOPY OF IRON-OXIDE - OXIDATION OF ONE MONOLAYER OF IRON ON CU(100) [J].

DENDAAS, H ;

GIJZEMAN, OLJ ;

GEUS, JW .

SURFACE SCIENCE, 1993, 290 (1-2) :26-34

[5] SUBSTRATE DIFFUSION IN METASTABLE ULTRATHIN FILMS - IRON ON CU(001) [J].

DETZEL, T ;

MEMMEL, N .

PHYSICAL REVIEW B, 1994, 49 (08) :5599-5606

[6] PHOTOEMISSION SATELLITES AND ELECTRONIC-STRUCTURE OF FE2O3 [J].

FUJIMORI, A ;

SAEKI, M ;

KIMIZUKA, N ;

TANIGUCHI, M ;

SUGA, S .

PHYSICAL REVIEW B, 1986, 34 (10) :7318-7333

[7]

KISHI K, 1990, SURF SCI, V227, P97, DOI 10.1016/0039-6028(90)90396-P

[8] ATOMIC AND MAGNETIC-STRUCTURE OF FCC FE/CU(100) [J].

KRAFT, T ;

MARCUS, PM ;

SCHEFFLER, M .

PHYSICAL REVIEW B, 1994, 49 (16) :11511-11514

[9] GEOMETRIC STRUCTURE OF THE ALPHA-FE2O3(001) SURFACE - A LEED AND XPS STUDY [J].

KURTZ, RL ;

HENRICH, VE .

SURFACE SCIENCE, 1983, 129 (2-3) :345-354

[10] PHOTOEMISSION-STUDY OF THE VALENCE-BAND ELECTRONIC-STRUCTURE IN FEXO,FE3O4, AND ALPHA-FE2O3 SINGLE-CRYSTALS [J].

LAD, RJ ;

HENRICH, VE .

PHYSICAL REVIEW B, 1989, 39 (18) :13478-13485

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