Patent ID: 6985066

Claim:
A galvanomagnetic device comprising: an electrically insulating substrate; and an alloy layer disposed on a surface of the substrate; wherein the alloy layer comprises indium antimonide alloyed with at least one Group 13 isoelectronic element antimonide; and wherein the alloy layer is doped with an n-type dopant to provide an average electron density at 300K of between 1×10 17 cm −3 and 4×10 17 cm −3 ; and wherein the alloy layer has a total isoelectronic element antimonide mole fraction between sixteen-hundredths and three tenths (0.16–0.3); and wherein the alloy layer exhibits a total variation in electron mobility of less than 2% over a temperature range of −40° C. to +200° C.