Surface composition of ordered alloys: An off-stoichiometric effect

被引：26

作者：

Ruban, AV ^{[1
]}

机构：

[1] Tech Univ Denmark, Ctr Atom Scale Mat Phys, DK-2800 Lyngby, Denmark

[2] Tech Univ Denmark, Dept Phys, DK-2800 Lyngby, Denmark

来源：

PHYSICAL REVIEW B | 2002年 / 65卷 / 17期

关键词：

D O I：

10.1103/PhysRevB.65.174201

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

I predict the existence of an off-stoichiometric effect in ordered alloys in the form of a distinct transition in the surface segregation behavior of alloy components near the bulk stoichiometric composition. It is caused by the discontinuity in the effective chemical potential at the stoichiometric composition. The effect is predicted to occur at the (111) surface of ordered Ni3Al and Pt3Fe alloys.

引用

页码：1 / 4

页数：4

共 15 条

[1] BECAAT P, 1990, SURF SCI, V238, P105
[2] Oxygen adsorption and oxide formation on Ni3Al(111)
Becker, C
Kandler, J
Raaf, H
Linke, R
Pelster, T
Drager, M
Tanemura, M
Wandelt, K
[J]. JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A-VACUUM SURFACES AND FILMS, 1998, 16 (03): : 1000 - 1005
[3] Phase diagrams for surface alloys
Christensen, A
Ruban, AV
Stoltze, P
Jacobsen, KW
Skriver, HL
Norskov, JK
Besenbacher, F
[J]. PHYSICAL REVIEW B, 1997, 56 (10): : 5822 - 5834
[4] Creemers C, 1997, SURF INTERFACE ANAL, V25, P177, DOI 10.1002/(SICI)1096-9918(199703)25:3<177::AID-SIA219>3.0.CO
[5] 2-T
[6] GIBBS JW, 1945, COLLECTED WORKS, V1
[7] First-principles calculations of the vacancy formation energy in transition and noble metals
Korzhavyi, PA
Abrikosov, IA
Johansson, B
Ruban, AV
Skriver, HL
[J]. PHYSICAL REVIEW B, 1999, 59 (18) : 11693 - 11703
[8] Krivoglaz M.A:, 1996, DIFFUSE SCATTERING X
[9] Perdew JP, 1996, PHYS REV LETT, V77, P3865, DOI 10.1103/PhysRevLett.77.3865
[10] The interplay of surface segregation and atomic order in alloys
Polak, M
Rubinovich, L
[J]. SURFACE SCIENCE REPORTS, 2000, 38 (4-5) : 127 - 194

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