Room temperature magnetic transition in ternary neodymium cobalt germanium 1:2:2 type intermetallics

The series of rare earth (R)-3d transition metal (T)-semiconductor(S) with structural formula of RT
₂
S
₂
have received much attention due to their complicate low temperature magnetic properties such as metamagnetic-antiferromagnetic, pauli paramagnetic, commensurate-incommensurate magnetic phase transition
^1,2
. However, the magnetisms of these magnetic phenomena are not very clear. In recent years, the complicate magnetic phase states at low temperature could be understood by the skyrmion effect. A topological magnetism might be used to interpret these magnetic phenomena. In addition, the high temperature magnetic property and the magneto-transport should be an extensive study in RT
₂
S
₂
system.