Abstract
The structural and magnetic properties of Bi-doped Gd 2-x Bi x CuO 4 were examined by X-ray powder diffraction and magnetic susceptibility measurements. Results show that the T′-(214) phase solubility region was retained in the narrow range of 0≤x≤0.1, while weak ferromagnetic or canted antiferromagnetic ordering temperature T N (Cu) of Cu moments decreased with doping. The degree of the structural distortion of the oxygen site in the Cu-O plane may be influenced by the strength of the weak ferromagnetic order in the Gd 2-x Bi x CuO 4 system.