Steering the Growth of Metal Ad-particles via Interface Interactions Between a MgO Thin Film and a Mo Support

被引：20
作者：
Benedetti, Stefania [1 ,2 ]
Stavale, Fernando [3 ]
Valeri, Sergio [1 ,2 ]
Noguera, Claudine [4 ,5 ]
Freund, Hans-Joachim [3 ]
Goniakowski, Jacek [4 ,5 ]
Nilius, Niklas [3 ]
机构：
[1] Univ Modena & Reggio Emilia, CNR, Ctr S3, Inst Nanosci, I-41125 Modena, Italy
[2] Univ Modena & Reggio Emilia, Dipartimento Sci Fis Informat & Matemat, I-41125 Modena, Italy
[3] Max Planck Gesell, Fritz Haber Inst, D-14195 Berlin, Germany
[4] CNRS, F-75252 Paris 05, France
[5] Univ Paris 06, INSP, UMR7588, F-75252 Paris 05, France
来源：
ADVANCED FUNCTIONAL MATERIALS | 2013年 / 23卷 / 01期
关键词：
epitaxy; metal nanoparticles; thin films; self-assembly; metal-oxide interactions; SURFACE; MOLECULES;
D O I：
10.1002/adfm.201201502
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The coincidence lattice formed between a crystalline MgO film and a Mo(001) support is found to be an ideal template to produce long-range ordered ensembles of Fe and Cr particles for electronic, magnetic and chemical applications. The structural and electronic properties of this super-lattice are analyzed by means of scanning tunnelling microscopy and density functional theory. The different registers of atoms at the interface induce periodic changes in the MgO lattice parameter, in the metal-oxide binding length, and the workfunction. These variations modulate the adsorption landscape for Cr and Fe atoms and give rise to the observed ordering phenomena. Preferred nucleation and growth is revealed in those regions of the coincidence lattice that have a small lattice mismatch with the ad-particles and enable electron-transfer processes with the support.
引用
收藏
页码：75 / 80
页数：6
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