# Spin dependent impurity effects on the 2D frustrated magnetism of NiGa2S4.

@article{Nambu2008SpinDI, title={Spin dependent impurity effects on the 2D frustrated magnetism of NiGa2S4.}, author={Yusuke Nambu and Satoru Nakatsuji and Yoshiteru Maeno and Edem K. Okudzeto and Julia Y. Chan}, journal={Physical review letters}, year={2008}, volume={101 20}, pages={ 207204 } }

Impurity effects on the triangular antiferromagnets Ni1-xMxGa2S4 (M=Mn, Fe, Co and Zn) are studied. The 2D frozen spin-disordered state of NiGa2S4 is stable against the substitution of Zn2+ (S=0) and Heisenberg Fe2+ (S=2) spins, and exhibits a T2-dependent magnetic specific heat, scaled by the Weiss temperature. In contrast, the substitutions with Co2+ (S=3/2) spin with Ising-like anisotropy and Heisenberg Mn2+ (S=5/2) spin induce a conventional spin glass phase below 1 K. From these…

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