Depression of the weak-ferromagnetism of CuO2 planes in Gd2CuO4 through Ce and Th doping

A. BUTERA; A. CANEIRO; M.T. CAUSA; L.B. STEREN; R. ZYSLER; M. TOVAR; S. OSEROFF

PHYSICA C - SUPERCONDUTIVITY

ELSEVIER SCIENCE BV

Lugar: Amsterdam; Año: 1989 vol. 160 p. 341 - 346

0921-4534

Gd2−xCexCuO oxides belong to a family of recently discovered electron doped cuprate superconductors. The undoped material Gd2CuO4 shows antiferromagnetic ordering of the Cu moments about room temperature. We report here ESR and static magnetization measurements made in ceramic samples which indicate a depression of the ordering temperature at a rate of 18 K/at%Ce, down to the Ce solubility limit of x∽0.16, where the material orders below 180 K. A similar rate of depression has been observed for a sample with Th substitution for Gd ions.