Abstract
Solids of the composition La2-xSrxLi1/2Co1/2O4 (x50, x=0.2) crystallize in a superstructure of the K2NiF4 lattice with a doubled unit cell in the (001) plane (space group Ammm; a=b=J2a0), caused by cation ordering between lithium and cobalt on the octahedral sites. The electronic structure of the Co^III O6 and Co^IV O6
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