THE (110) SURFACE OF THE DISORDERED PT25CO75 ALLOY - A SANDWICH OF ALMOST PURE MONOATOMIC LAYERS

被引：26

作者：

BUGNARD, JM

BAUDOINGSAVOIS, R

GAUTHIER, Y

HLIL, EK

机构：

[1] Laboratoire de Spectrométrie Physique, Associé au CNRS, Université Joseph Fourier, 38402 Saint-Martin d'Hères

来源：

SURFACE SCIENCE | 1993年 / 281卷 / 1-2期

关键词：

D O I：

10.1016/0039-6028(93)90855-E

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 (110) surface structure of the Pt25Co75 alloy in the substitutionally disordered state was studied by quantitative LEED. In a way similar to Pt(x)Ni1-x(110) surfaces, on the Ni rich side, the composition profile versus depth is strongly oscillating with a pure cobalt top layer; however, the oscillation is stronger and goes deeper for Pt25Co75(110) than for the previously studied surfaces of Pt10Ni90(110) and Pt5oNi50(110). Actually the selvedge, which can be easily produced by simple standard argon cleaning and annealing UHV techniques, is a sequence of three almost pure layers: Co-Pt-Co. This provides an interesting system to be studied: the monolayer limit of Pt-Co sandwiches.

引用

页码：62 / 73

页数：12

共 21 条

[1] ERROR ANALYSIS AND ADJUSTMENT OF LEED GONIOMETER
ABERDAM, D
BAUDOING, R
DEBERSUDER, L
[J]. REVIEW OF SCIENTIFIC INSTRUMENTS, 1974, 45 (12) : 1573 - 1579
[2] BAUDOINGSAVOIS R, 1991, PHYS REV B, V44, P12977, DOI 10.1103/PhysRevB.44.12977
[3] MONOTONOUS CONCENTRATION PROFILE AND RECONSTRUCTION AT PT80FE20(111) - LEED STUDY OF A CATALYST
BECCAT, P
GAUTHIER, Y
BAUDOINGSAVOIS, R
BERTOLINI, JC
[J]. SURFACE SCIENCE, 1990, 238 (1-3) : 105 - 118
[4] COBALT ULTRA-THIN FILM EPITAXY ON PT(100) SURFACES
BOEGLIN, C
BARBIER, A
CARRIERE, B
COUSANDIER, R
DEVILLE, JP
SCHEURER, F
SPEISSER, C
[J]. SURFACE SCIENCE, 1991, 251 : 602 - 606
[5] MAGNETISM AND SPATIAL ORDER IN NI-PT AND CO-PT ALLOYS
CADEVILLE, MC
DAHMANI, CE
KERN, F
[J]. JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1986, 54-7 : 1055 - 1056
[6] LEED GONIOMETER
DEBERSUDER, L
[J]. REVIEW OF SCIENTIFIC INSTRUMENTS, 1974, 45 (12) : 1569 - 1572
[7] INITIAL GROWTH AND SURFACE ALLOY FORMATION OF PT ON NI(111)
DECKERS, S
OFFERHAUS, S
HABRAKEN, FHPM
VANDERWEG, WF
[J]. SURFACE SCIENCE, 1990, 237 (1-3) : 203 - 212
[8] STRUCTURE DETERMINATION OF THE (1X2) AND (1X3) RECONSTRUCTIONS OF PT(110) BY LOW-ENERGY ELECTRON-DIFFRACTION
FERY, P
MORITZ, W
WOLF, D
[J]. PHYSICAL REVIEW B, 1988, 38 (11) : 7275 - 7286
[9] MULTILAYER RELAXATION OF NI(110) ANALYZED BY LEED AND METRIC DISTANCES
GAUTHIER, Y
BAUDOING, R
JOLY, Y
GAUBERT, C
RUNDGREN, J
[J]. JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 1984, 17 (25): : 4547 - 4558
[10] METASTABILITY OF THE SEGREGATION-REVERSAL COMPOSITION PROFILE AT THE PTXNI1-X(110) SURFACE - A LOW-ENERGY ELECTRON-DIFFRACTION STUDY
GAUTHIER, Y
BAUDOING, R
JUPILLE, J
[J]. PHYSICAL REVIEW B, 1989, 40 (03): : 1500 - 1510

← 1 2 3 →