Thermal Expansion of Anti-Perovskite Mn_3Zn_(1-x)Sn_xN Compounds

摘要

The anti-perovskite structured Mn_3XN(X=Cu,Al,Ag,Zn,Ga,Sn,In) have wide perspective and practicability with unique advantages compared with other materials as a new negative thermal expansion (NTE) material. Because of its simple preparation and unique properties of NTE, this kind of compounds aroused scientists' attention. The metallic nitrides Mn_3Zn_(1-x)Sn_xN (x=0.1,0.2, 0.3,0.4, 0.5) were prepared by solid-state sintering. The anti-perovskite compound Mn_3Zn_(1-x)Sn_xN has a cubic crystal structure with space group Pm3m. It shows that Zn element is partial replaced by Sn element.