Abstract and subjects
The Néel temperature of heavy fermion material
CeIn
3
is at 10
K. La doping to Ce site of
CeIn
3
introduces increase of distance between Ce ions and reduction of number of 4f electron. It is implied the reduction of 4f electron number with La doping weakens inter site magnetic interaction. An
x
–
T
phase diagram was drawn with Néel temperatures estimated from both electrical resistivity and magnetic susceptibility measurements.