Magnetic Susceptibility of Indium Antimonide

Abstract

The magnetic susceptibility of both $n$- and $p$-type InSb has been measured by the Faraday method from 65\ifmmode^\circ\else\textdegree\fi{}K to 650\ifmmode^\circ\else\textdegree\fi{}K. The carrier contribution has been obtained by subtracting the lattice component in both the intrinsic range and the extrinsic range. These data indicate that the energy gap at 0\ifmmode^\circ\else\textdegree\fi{}K is 0.262 ev and that the electron effective mass is 0.028 ${m}_{0}$. The hole contribution to the susceptibility in the extrinsic range for the $p$-type specimen used was too small to permit a determination of the effective mass of holes.