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(1 × n) reconstruction of the Rh (110) surface with n = 2, 3, 4, 5

✍ Scribed by V.R. Dhanak; G. Comelli; G. Cautero; G. Paolucci; K.C. Prince; M. Kiskinova; R. Rosei

Publisher: Elsevier Science
Year: 1992
Tongue: English
Weight: 343 KB
Volume: 188
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(92)90015-f

No coin nor oath required. For personal study only.

✦ Synopsis

The formation and reduction with hydrogen of ordered oxygen layers on Rh( I 10) has been studied by means of LEED, Auger spectroscopy and thermal desorption. We show that it is possible to prepare clean, (1 X n) reconstructed Rh ( I 10) surfaces by suitable thermal and chemical treatment. Adsorption of oxygen on a Rh ( 1 IO) surface followed by heating to 700 K results in (2x3), (2~2)p2mgorc( ) structures (n-3,4 and 5), dependingon orcygen coverage. Reduction by hydrogen at 370 K results, respectively, in ( 1 x3), ( 1 x2) and (1 x n) structures which are oxygen-and hydrogen-free as judged by AES and TDS.

The ( 1 xn) structures are m&stable and revert to ( 1 x 1) at temperatures above 480 K. These results offer the possibility of studying a clean Rh( I IO) surface both in its unreconstructed state and in a variety of reconstructed phases.

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