SURFACE SPIN RELAXATION OF CURRENT CARRIERS IN GRAPHITE AS A REASON FOR LOW TEMPERATURE PEAK FORMATION IN TEMPERATURE DEPENDENCE OF CONDUCTION ESR LENEWIDTH

摘要

In all previous investigations of conduction electron spin resonance (CESR) phenomenon in graphite at the analysis of the resonance line shape and linewidth the surface spin relaxation effects were ignored. We have studied the dependence of CESR signal linewidth in highly oriented pyrolitic graphite (HOPG) on temperature and sample dimensions and have shown that the experimental data may be explained well, if the surface spin relaxation of graphite current carriers is taken into consideration.