Growth of fcc(111) on bcc(110): new type of epitaxial transition observed for Pd on Cr

被引：19
作者：
Hellwig, O
Theis-Brohl, K
Wilhelmi, G
Stierle, A
Zabel, H [1 ]
机构：
[1] Ruhr Univ Bochum, D-44780 Bochum, Germany
[2] European Synchrotron Radiat Facil, F-38043 Grenoble, France
来源：
SURFACE SCIENCE | 1998年 / 398卷 / 03期
关键词：
chromium; epitaxy; growth; LEED; metal-metal interfaces; palladium; STM; surface structure; X-ray absorption spectroscopy;
D O I：
10.1016/S0039-6028(98)80043-5
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：
Depending on film thickness, t, and growth temperature, T, LEED and in-plane X-ray measurements show Kurdjumov-Sachs (KS) as well as Nishiyama-Wassermann (NW) epitaxial relationships for Pd(lll) on Cr(110). This is a surprising result, because theoretical models definitely expect the KS orientation for this system. In a systematic study of this phenomenon we determined areas of different epitaxial orientations in a t-T diagram. During Pd growth, we observed a continuous transition from the KS to the NW epitaxial relationship, which is accompanied by an enormous reorientation of material. Qualitative considerations, concerning the Pd island structure developing during growth, help to explain the observed behaviour. (C) 1998 Elsevier Science B.V.
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收藏
页码：379 / 385
页数：7
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