Susceptibility, high-field magnetization, and submillimeter-wave electron spin resonance measurements of layered quasistoichiometric Li1-xNi1+xO2 are reported and compared to isomorphic NaNiO2. A mechanism of magnetic frustration induced by the excess Ni ions always present in the Li layers is proposed. We finally comment on the possible realization of an orbital liquid state in this controversial compound.
机构:
Univ Liverpool, Dept Math Sci, Div Theoret Phys, Liverpool L69 7ZF, Merseyside, EnglandUniv Liverpool, Dept Math Sci, Div Theoret Phys, Liverpool L69 7ZF, Merseyside, England