Burrowing self-organized cobalt clusters into a gold substrate

被引：66

作者：

Padovani, S ^{[1
]}

Scheurer, F ^{[1
]}

Bucher, JP ^{[1
]}

机构：

[1] Univ Louis Pasteur Strasbourg 1, UMR 7504, CNRS, Inst Phys & Chim Mat Strasbourg, F-67037 Strasbourg, France

来源：

EUROPHYSICS LETTERS | 1999年 / 45卷 / 03期

关键词：

D O I：

10.1209/epl/i1999-00167-2

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The mechanism of cobalt-cluster incorporation into a Au(lll) substrate is followed by variable temperature STM, Auger spectroscopy, and in situ magneto-optic Kerr (MOKE) measurements. Upon thermal activation, cobalt clusters sink into the substrate by simultaneously expelling gold atoms which, in turn, contribute by embedding the remaining cobalt clusters. Although important mass transport occurs during this operation, MOKE indicates that the clusters remain globally undisturbed, until finally, irreversible cluster fragmentation and dissolution occur above 600 K.

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页码：327 / 333

页数：7

相关论文

共 22 条

[11] THE SURFACE FREE-ENERGIES OF SOLID CHEMICAL-ELEMENTS - CALCULATION FROM INTERNAL FREE ENTHALPIES OF ATOMIZATION [J].

MEZEY, LZ ;

GIBER, J .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS, 1982, 21 (11) :1569-1571

[12] Variable temperature STM and Kerr studies of ultrathin films of Co on Au(111): from self-organized clusters to continuous films [J].

Padovani, S ;

Molinas-Mata, P ;

Scheurer, F ;

Bucher, JP .

APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, 1998, 66 (Suppl 1) :S1199-S1203

[13]

PADOVANI S, IN PRESS PHYS REV B

[14] Dynamics of surface alloying: Determination of diffusion barriers from photoelectron spectra [J].

Patthey, F ;

Massobrio, C ;

Schneider, WD .

PHYSICAL REVIEW B, 1996, 53 (19) :13146-13149

[15] Growth of Co on Cu(111): subsurface growth of trilayer Co islands [J].

Pedersen, MO ;

Bonicke, IA ;

Laegsgaard, E ;

Stensgaard, I ;

Ruban, A ;

Norskov, JK ;

Besenbacher, F .

SURFACE SCIENCE, 1997, 387 (1-3) :86-101

[16]

RAUB E, 1950, Z METALLKD, V41, P234

[17]

RAUB E, 1997, CRC HDB CHEM PHYSICS, P12

[18] MAGNETIC DOMAIN-STRUCTURES IN ULTRATHIN CO/AU(111) - ON THE INFLUENCE OF FILM MORPHOLOGY [J].

SPECKMANN, M ;

OEPEN, HP ;

IBACH, H .

PHYSICAL REVIEW LETTERS, 1995, 75 (10) :2035-2038

[19] Preparation of well-ordered cobalt nanostructures on Au(111) [J].

Tolkes, C ;

Zeppenfeld, P ;

Krzyzowski, MA ;

David, R ;

Comsa, G .

PHYSICAL REVIEW B, 1997, 55 (20) :13932-13937

[20] Growth and stability of cobalt nanostructures on gold (111) [J].

Tolkes, C ;

Zeppenfeld, P ;

Krzyzowski, MA ;

David, R ;

Comsa, G .

SURFACE SCIENCE, 1997, 394 (1-3) :170-184