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We synthesized Mn3Zn0.9Cu0.1N by solid state reaction, and magnetic as well as electrical transport properties were investigated. It is found that Mn3Zn0.9Cu0.1N exhibits a first-order antiferromagnetism (AFM) to paramagnetic (PM) transition with the Néel temperatureTN~163 K, and substitution of Cu for Zn would favor ferromagnetism (FM) state and weaken AFM ground state, leading to a convex curvature character ofM(T)curve. With high external fields 10 kOe–50 kOe, magnetic transition remains adoi:10.1155/2013/863963 fatcat:li33ue5ow5dermo4znurfzs7r4