Abstract
Magnetic properties of spin ½ J 1 - J 2 quantum Heisenberg antiferromagnet on body centered cubic lattice are investigated in the paper. By using two-time temperature Green's functions, sublattice magnetization and critical temperature depending on the frustration ratio J 2 / J 1 are obtained in both stripe and Neel phase. The analysis of ground state sublattice magnetization and internal energy indicates the first order phase transition from Neel to stripe phase for 0.7< J 2 / J 1 < 0.8, which is in agreement with previous studies.
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