ESR STUDIES OF CATHODE MATERIALS WITH SPINEL STRUCTURE

摘要

ESR measurements have shown that Mn~(4+) ions arc present in axially distorted symmetry sites in the spinel Li_(1-x+partial deriv)Mn_(2-partial deriv)O_4. Hopping conductivity mechanism between the Mn~(3+) and Mn~(4+) sites gives a coherent explanation for the observed signal of cyclotron resonance. Using the lincwidth of ESR line, the spin Hamiltonian parameter 22