HALOGEN ADSORPTION AND HALOGEN-INDUCED SURFACE PHASE-TRANSITIONS ON CR(110)

Journal article

The interaction of chlorine and bromine with Cr(110) at 300 K has been studied using AES, TDS, δφ and LEED measurements. Cl overlayer formation is found to precede growth of bulk CrCl2, and two ordered overlayer structures are detected by LEED, the high coverage phase being isostructural with the Br adlayer observed on the same surface. Cl adsorption is found to lower the work function of Cr(110) in marked contrast to the behaviour of Cr(100). Halogen adlayers on Cr(110) are found to undergo an irreversible phase transition above 300 K; this is discussed in terms of periodic step formation involving the (110) substrate. © 1987.

Authors: Foord, J; Lambert, R

• Publication status: Published
• Journal: SURFACE SCIENCE
• Volume: 185
• Issue: 1-2
• Pages: L483-L488
• Publication date: 1987-06-01
• DOI: 10.1016/S0039-6028(87)80604-0
• ISSN: 0039-6028
• Language: English