Sang-Min Park, Mark P. Stoykovich, et al.
Advanced Materials
A LEED intensity analysis of 5 beams from the low-temperature W{001}c(2×2) structure indicates that the surface reconstruction involves shifts of the surface atoms along 〈110〉 directions within the plane of the surface, as suggested by Debe and King. At temperatures 100-140K the shifts are in the range 0.15-0.3 Å, with the first interlayer spacing 1.48-1.58 Å (bulk value 1.58 Å). Similar analysis of the room-temperature W{001}c(2×2)-H phase indicates: (i) none of the models proposed, which ascribe the c(2×2) structure directly to ordered hydrogen adsorption, can explain the experimental data; (ii) the W{001}c(2×2)-H structure is probably impurity stabilized by H at room temperature in the same W lattice as the low-temperature reconstructed phase. © 1978.
Sang-Min Park, Mark P. Stoykovich, et al.
Advanced Materials
William Hinsberg, Joy Cheng, et al.
SPIE Advanced Lithography 2010
Arvind Kumar, Jeffrey J. Welser, et al.
MRS Spring 2000
H.D. Dulman, R.H. Pantell, et al.
Physical Review B