Abstract
The structure and magnetic properties of NdMn 2− x Cu x Ge 2 (0.0≤ x≤1.0) were studied by X-ray powder diffraction and magnetization measurements. All compounds crystallize in the ThCr 2Si 2-type structure with space group I4/ mmm. Substitution of Cu for Mn leads to a linear decrease in the lattice constant c and the unit cell volume V and a linear increase in the lattice constant a. Increasing substitution of Cu for Mn shows a depression of ferromagnetic ordering. The observed phase transitions are summarized in a magnetic x− T phase diagram and compared with previous neutron diffraction results for x=0.0.
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