The electrical resistivity of gallium and some other anisotropic properties of this metal

Abstract
It is shown that single crystals of gallium can be produced with considerable ease, and that these crystals show greater anisotropism in their conducting properties than those of other metals. At normal temperatures the electrical conductivities for the three axial directions c:a:b are in the ratio 1:3$\cdot $2:7, and the expansion coefficients are in the ratio 1:0$\cdot $7:1$\cdot $9. Results are given showing that these ratios persist down to -180 degrees C with relatively little change. From preliminary observations at normal temperature it seems that the thermal conductivity varies much as does the electrical conductivity and that the mechanical properties will also prove to be markedly anisotropic.