Magnetic susceptibility of oxygen adsorbed on the surface of spherical and fibrous activated carbon
Journal Title: Carbon - Science and Technology - Year 2009, Vol 2, Issue 1
Abstract
The magnetic susceptibilities of oxygen adsorbed on the surface of bead-shaped activated carbon and activated carbon fibers were evaluated as a function of temperature between 4.2oK and 300 oK, and found to exhibit a sharp peak at around 50oK. This implies that the adsorbed oxygen molecules form an antiferromagnetic state. The relation between the susceptibility and the adsorbed mass suggest that the thickness of the adsorbed oxygen is thin enough to consider a two-dimensional structure for bead–shaped activated carbon and carbon fibers across the fiber axis but thick enough to regard it as three-dimensional along the fiber axis. The result is discussed with reference to the study on one-dimensional oxygen array.
Authors and Affiliations
Kiyoshi Kawamura, Yasunori Makishima, Yuji Ochiai
Keywords
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