Abstract
On the basis of measured low magnetic field galvanomagnetic coefficients both for Sn-doped Bi0.84–Sb0.16–Sn0.1 and pure semiconducting Bi–Sb alloys, kinetic parameters of the investigated materials have been determined. It is shown that hole ellipsoids corresponding to the obtained results are less anisotropic (ν2/ν1 = 0.05, ν3/ν1 = 0.5) in comparison with L-hole ellipsoids, where ν2/ν1 = 0.009, ν3/ν1 = 0.7 and their slope is significantly larger (φh = 16°) than L-hole (and L-electron) ones. Therefore peculiarities of the valence band for the Bi0.84–Sb0.16 alloy and other semiconducting alloys with high content of antimony can not be adequately described by involving dominant contribution of the hole valleys localized in T, H, and L points of the Brioullin zone.
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