Structure and Magnetic Properties of Quasi-One Dimensional Cobalt-Doped Scandium Cuprate Compounds

Structure and magnetic properties of the Sc2Cu2-x CoxO5 system were investigated up to the solid solution limits x=0.4 and x=0.6. Undoped Sc2Cu2O5 has, like isostructural Y2Cu2O5, a magnetic structure with weak ferromagnetic coupling along the b-axis and strongly coupled Cu2+ chains parallel to the a-axis which were antiferromagnetically coupled below the Néel temperature of 16K. Doping with Co2+ caused the paramagnetic Curie temperature (θp) …