Some Electrical Properties of Natural Crystals of Iron Pyrite

Abstract

Room-temperature Hall mobilities of natural single crystals of iron pyrite with carrier concentrations of approximately ${10}^{18}$/${\mathrm{cm}}^{3}$ were found to be approximately 100 ${\mathrm{cm}}^{2}$/volt-sec for electrons and 1 for holes. Resistivity as a function of temperature was measured on six samples in the range from -196\ifmmode^\circ\else\textdegree\fi{}C to 403\ifmmode^\circ\else\textdegree\fi{}C; from this measurement the width of the forbidden band was estimated to be 1.2 ev.