ORDERED AND DISORDERED OXYGEN AND SULFUR ON NI(100)

被引：22

作者：

OED, W ^{[1
]}

STARKE, U ^{[1
]}

HEINZ, K ^{[1
]}

MULLER, K ^{[1
]}

PENDRY, JB ^{[1
]}

机构：

[1] UNIV LONDON IMPERIAL COLL SCI & TECHNOL,BLACKETT LAB,LONDON SW7 2BZ,ENGLAND

来源：

SURFACE SCIENCE | 1991年 / 251卷

关键词：

D O I：

10.1016/0039-6028(91)91040-5

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 adsorption structures of oxygen and sulfur are compared for both ordered and disordered phases as determined by means of LEED and DLEED, respectively. Emphasis is on the comparison of the different chemical species as well as on the coverage dependence in each case. In the ordered phases both oxygen and sulfur adsorb in fourfold symmetric hollow sites, whereby in the disordered phases, i.e., for low coverages, mixtures with off-center sites seem to exist. The adsorption heights are coverage dependent obviously due to adatom-adatom interactions. Both species induce a substantial expansion of the first substrate layer distance which is larger for oxygen than for sulfur but increases linearly with coverage in both cases. Also, there is an adsorbate-induced buckling in the second substrate layer which is weakened with increasing coverage.

引用

页码：488 / 492

页数：5

共 20 条

[1] ELECTRON-ENERGY LOSS SPECTROSCOPY OF H2S ADSORBED ON NI(100) [J].

BACA, AG ;

SCHULZ, MA ;

SHIRLEY, DA .

JOURNAL OF CHEMICAL PHYSICS, 1984, 81 (12) :6304-6309

[2] NEW ASPECTS OF THE DISORDERED ADSORPTION OF OXYGEN ON NI(100) [J].

FRANCHY, R ;

WUTTIG, M ;

IBACH, H .

SURFACE SCIENCE, 1989, 215 (1-2) :65-73

[3] STRUCTURAL-ANALYSIS OF SURFACES BY LEED [J].

HEINZ, K .

PROGRESS IN SURFACE SCIENCE, 1988, 27 (04) :239-326

[4] DIFFUSE LEED AND SURFACE CRYSTALLOGRAPHY [J].

HEINZ, K ;

SALDIN, DK ;

PENDRY, JB .

PHYSICAL REVIEW LETTERS, 1985, 55 (21) :2312-2315

[5] DIFFUSE INTENSITIES IN LEED [J].

HEINZ, K .

VACUUM, 1990, 41 (1-3) :328-332

[6] LOW-TEMPERATURE ADSORPTION OF H2S ON NI(001) STUDIED BY NEAR-EDGE-X-RAY-ABSORPTION AND SURFACE-EXTENDED-X-RAY-ABSORPTION FINE-STRUCTURE [J].

MCGRATH, R ;

MACDOWELL, AA ;

HASHIZUME, T ;

SETTE, F ;

CITRIN, PH .

PHYSICAL REVIEW B, 1989, 40 (14) :9457-9463

[7]

MULLER K, 1985, STUD SURF CATAL, V23, P9

[8]

MULLER K, 1985, SPRINGER SERIES SURF, V2, P105

[9] ADSORBATE-INDUCED RELAXATION AND RECONSTRUCTION OF C(2X2)O/NI(100) - A REINVESTIGATION BY LEED STRUCTURE-ANALYSIS [J].

OED, W ;

LINDNER, H ;

STARKE, U ;

HEINZ, K ;

MULLER, K ;

PENDRY, JB .

SURFACE SCIENCE, 1989, 224 (1-3) :179-194

[10] LEED STRUCTURE-ANALYSIS OF P(2X2)S/NI(100) [J].

OED, W ;

STARKE, U ;

BOTHE, F ;

HEINZ, K .

SURFACE SCIENCE, 1990, 234 (1-2) :72-78

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