PHYSICAL-PROPERTIES OF THE QUARTERNARY CHALCOGENIDES CU2IBIICIVX4 (BII = ZN,MN,FE,CO CIV = SI,GE,SN X = S,SE)

X-ray, electrical and magnetic measurements have been made on several quarternary chalcogenides of the type Cu2IBIICIVX4 with BII = Zn, Mn, Fe, Co; CIV = Si, Ge, Sn; X = S, Se. The structures of these compounds result from a superstructure of zincblende or wurtzite. The resistivities have been found to be extrinsic. The magnetic measurements show that the susceptibilities of the compounds containing zinc are independent of temperature, whereas those of the transition metal compounds obey the Curie Weiss law above 77 K. The sulfur compounds have a negative Weiss constant whereas the selenide compounds show a positive Weiss constant. © 1979.