Synthesis and magnetic properties of Sr4−xBaxMn3O10

Abstract The magnetic properties of solid solution Sr 4− x Ba x Mn 3 O 10 ( x = 0 , 1, 2, 3 and 4) were investigated. These were well characterized as two-dimensional antiferromagnets with Mn 4+ ( S = 3 2 ). The magnetic susceptibility of every sample showed a broad maximum due to short-range ordering at around 80 K. The kinks in the susceptibility and peaks in the specific heat data indicated T N . The T N increased from 67 to 78 K with increasing x .