Structure and magnetic properties of TbFe6−xGa6+x compounds

The magnetization measurements indicate all the TbFe6−xGa6+x compounds have magnetic ordering. The Curie temperatures decrease from 492 K for TbFe6Ga6 to 327 K for TbFe4.55Ga7.45. The magnetization of the TbFe6−xGa6+x decreases with temperature decreases below its magnetic ordering temperature due to the increasing Tb-sublattice magnetization which is antiparallel to the Fe-sublattice magnetization.