Spin-Glass Insulator State in (Tb-La)2/3Ca1/3MnO3 Perovskite

A thorough study of the low-temperature magnetic state of polycrystalline \(Tb_1/3La_2/3\)_2/3Ca_1/3MnO₃ has been carried out. This perovskitelike compound is an insulator at low temperatures and shows an insulator-metal transition under magnetic field. All the measurements of its magnetic state (magnetization, susceptibility, and neutron diffraction) are consistent with spin-glass behavior. The magnetic and electronic phase diagram for the series \(Tb_xLa_1-x\)_2/3Ca_1/3MnO₃ is depicted.