The influence of (510) step surface on the segregation of (110)surface of O/RhxPt1−x alloy system

Author

He, Junqi ; You Wang ; Zhang, Guoying ; Yan, Mufu

Author_Institution

Sch. of Mater. Sci. & Eng., Harbin Inst. of Technol., Harbin, China

fYear

2011

fDate

24-26 June 2011

Firstpage

6495

Lastpage

6497

Abstract

The atomic cluster models of (110) surface of Rh_xPt_1-x disordered binary alloy were constructed under the condition of O adsorption or not, and the coverage rate of O is 0.5. Also the (510)^[1] step surface were constructed on each model. The environment sensitive inlaid energy (EESE) and the electronic structure of the (510) step surface of O/Rh_xPt_1-x system were calculated by Recursion method. The results of EESE show that, the exists of (510) step surface increases the segregation of Rh on the surface of Rh-Pt. The electronic structure shows that in the case of O adsorption, the two peaks in the total density states on the alloy surface is more obvious because of the step stage which also decreased the total density states on the alloy surface.

Keywords

adsorption; electronic density of states; electronic structure; platinum alloys; recursion method; rhodium alloys; surface segregation; surface states; (110) disordered binary alloy surface; (510) step surface segragation; O; Rh_xPt_1-x; atomic cluster models; density of states; electronic structure; environment sensitive inlaid energy; oxygen adsorption; recursion method; Crystals; Electronic mail; Helium; Metals; Physics; Silicon; chemisorption; density of state (DOS); recursion method; surface segregation;

fLanguage

English

Publisher

ieee

Conference_Titel

Remote Sensing, Environment and Transportation Engineering (RSETE), 2011 International Conference on

Conference_Location

Nanjing

Print_ISBN

978-1-4244-9172-8

Type

conf

DOI

10.1109/RSETE.2011.5965845

Filename

5965845