The crystal structure, the intrinsic magnetism and the temperature dependence of coercivity for TbMn 6Sn 6 have been studied. The measurements show that the TbMn 6Sn 6 compound with the HfFe 6Ge 6 type hexagona...The crystal structure, the intrinsic magnetism and the temperature dependence of coercivity for TbMn 6Sn 6 have been studied. The measurements show that the TbMn 6Sn 6 compound with the HfFe 6Ge 6 type hexagonal structure has the lattice parameters of a =0 54561 nm, c =0 90477 nm, volume of unit cell V =0 241 nm 3 and Curie temperature T c=421 K. The thermomagnetic curve showed that the TbMn 6Sn 6 compound is of ferrimagnetism in the low external magnetic field( H o<32 kA/m) and ferromagnetism in the higher field. The coercivity of the TbMn 6Sn 6 compound has the maximum of 960 kA/m at the temperature of T =200 K.展开更多
文摘The crystal structure, the intrinsic magnetism and the temperature dependence of coercivity for TbMn 6Sn 6 have been studied. The measurements show that the TbMn 6Sn 6 compound with the HfFe 6Ge 6 type hexagonal structure has the lattice parameters of a =0 54561 nm, c =0 90477 nm, volume of unit cell V =0 241 nm 3 and Curie temperature T c=421 K. The thermomagnetic curve showed that the TbMn 6Sn 6 compound is of ferrimagnetism in the low external magnetic field( H o<32 kA/m) and ferromagnetism in the higher field. The coercivity of the TbMn 6Sn 6 compound has the maximum of 960 kA/m at the temperature of T =200 K.