Abstract
In this work, detailed relaxation measurements of dc magnetization in ceramic Gd 2CuO 4 are presented. This material presents a weak ferromagnetic order in the CuO 2 planar lattice below T N ≈ 290 K. From both the presence of irreversibilities and the slow decay of the remanent magnetization, it was concluded that the magnetic state below T N shows a spin glass like behaviour.
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