Abstract:

The sample of  Li_1.33Mn_1.67O₄  with spinel structure was prepared by means of solid state sintering technology. The ground state of  Li_1.33Mn_1.67O₄  shows cluster spin glass state  identified  by analyzing DC magnetization under different magnetic fields, magnetic hysteresis and AC susceptibility. The calculating results of geometrical frustration show that nonmagnetic Li+\|doping  destroyed the frustrated kagome lattice, induced the competition between ferromagnetic and antiferromagnetic interaction, and made the system present spin glass state.

Key words: spin glass state, geometrical frustration, spinel structure