Jerzy Kanicki, M. Sankaran, et al.
Applied Physics Letters
Electron paramagnetic resonance (EPR) studies of sputtered amorphous hydrogenated carbon (a-C) films have been conducted in several gaseous ambients, at three microwave frequencies, and as a function of film H content. Unpaired electron concentrations are found to decrease with increasing H content while EPR linewidths are shown to be a function of H content; unresolved proton hyperfine interaction is the linewidth determining factor for H content greater than 24% while conductivity is suggested to be the most significant linewidth determining factor for H content less than 24%. Furthermore, the EPR linewidth of a-C films broadens in the presence of gaseous O2 and demonstrates that these films are permeable to O2 and other gases.
Jerzy Kanicki, M. Sankaran, et al.
Applied Physics Letters
S.A. Chambers, S. Thevuthasan, et al.
Chemical Physics Letters
M. Hoinkis, C.S. Yannoni, et al.
Chemical Physics Letters
Qing Dai, Bing Yen, et al.
INTERMAG 2003