THE RESISTIVITIES OF LIQUID K-GA ALLOYS

Electrical resistivities of liquid K-Ga alloys were measured as a func tion of temperature and composition by a d.c. four-probe method. The e lectrical resistivity exhibits a sharp maximum value of 595 muOMEGA cm at 943 K and for a Ga concentration of 45 at.%. This maximum is much higher than those in Li-Ga and Na-Ga. The appearance of the maximum is discussed in terms of charge-transfer-induced anion clustering. More particularly, the possibility of local ordering resembling that of the B2 or B32 CryStal structures is considered.