Abstract
We report the synthesis of Sr0.8Ce0.2Mn1 − yCoyO3 − δ (y = 0.3, 0.4) solid solutions, which have a tetragonal perovskite structure (sp. gr. I4/mcm) with unit-cell parameters a = 0.53998(1) nm, c = 0.76404(1) nm, and V = 0.22273(4) nm3 at y = 0.3 and a = 0.54054(6) nm, c = 0.7644(6) nm, and V = 0.22335(4) nm3 at y = 0.4. The presence of cobalt in the octahedral sites of the Sr0.8Ce0.2Mn1 − yCoyO3 − δ (y = 0.3, 0.4) solid solutions reduces their antiferromagnetic ordering temperature and induces a transition to a spin glass state.
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