Synthesis and magnetic properties of solid solutions In1–xGaxSb〈Mn〉

Resumo

Manganese-doped solid solutions In_1–xGa_xSb (x = 0.05, 0.1, 0.5, 0.9, 0.95) were synthesized. It was found that, in samples of the compositions In_0.95Ga_0.05Sb〈Mn〉 and In_0.05Ga_0.95Sb〈Mn〉, a homogeneous substitutional solid solution forms, into which manganese-containing clusters are incorporated. The clusters are mainly located at crystal lattice defects—grain boundaries and dislocations. The ferromagnetic properties of the obtained samples at room temperature and higher are caused by clusters Mn_1+xSb, the effective size of which is about 180–300 nm.