%0 Journal Article
%T Structure and properties of samarium overlayer and Sm/Rh surface alloy on Rh(100)
%A Ma Yunsheng
%A Zhu Junfa
%A Zhou Weiping
%A Zhai Runsheng
%A Bao Xinhe
%A Zhang Xingyi
%A Zhuang Shuxian
%J Chinese Science Bulletin
%@ 1861-9541
%D 2001
%I 
%R 10.1007/BF02900652
%X The structure and properties of Sm overlayer and Sm/Rh surface alloy have been investigated with Auger electron spectroscopy (AES), low energy electron diffraction (LEED), X-ray photoelectron spectroscopy (XPS), and temperature programmed desorption spectroscopy (TDS). The growth of Sm on Rh(100) at room temperature (RT) appears following the Stranski-Krastanov growth mode and only the trivalent state Sm is observed from XPS results. Thermal treatment of the Sm film at 900 K leads to the formation of ordered surface alloy which shows the c(5¡Ì2 ¡Á ¡Ì2)R45¡ã and c(2¡Á2) LEED patterns. Annealing the Sm film at temperature above 400 K makes the binding energy (B.E.) of Sm 3d5/2 shift to higher energy by 0.7 eV, which indicates charge transfer from Sm to Rh(100) substrate, causing the increase of CO desorption temperature.
%K Sm film
%K Rh(100) surface
%K AES
%K LEED
%K XPS
%U http://link.springer.com/article/10.1007/BF02900652