Field-Induced Metamagnetic Transitions inS= 3/2 Heisenberg AntiferromagnetsMCr2O4

摘要: Magnetic properties of chromium spinels MCr 2 O 4 (M = Zn, Mg, Cd and Hg) were studied. By increasing the size A-site cation, spin frustration is gradually relieved due to enhancement spin-lattice couplings, We found interesting behavior for CdCr HgCr in their magnetization process. They exhibit first order transition plateau phase with one half full moment 3/2 Cr 3+ at 28 T 10 , respectively. These plateaux are attributed formation three-up one-down collinear arrangement. For we observed another ferromagnetic state.