Abstract
The Hall effect and the resistivity of undoped p –CdSd were measured in the temperature range between 2°K and 300°K, and also the magnetoresistance effect at 2°K and 4.2°K. The anisotropies were observed in the magnitude of the Hall mobility and its temperature dependence. The intermediate type of the impurity conduction occurs in the concentration range between 2.5×10 15 cm -3 and 1.0×10 17 cm -3 . The remarkable magnetic field dependences of the Hall coefficient and the magnetoresistance were observed at 4.2°K in the intermediate concentration range. The observed magnetoresistance was found to be consist of three components. One is a negative component which saturates at high magnetic fields. The others are two positive components, one of which is due to the change of the activation energy by the magnetic field, and the other is the contribution of two kinds of holes. A negative magnetoresistance was observed at 2°K in samples with the acceptor concentration higher than 2×10 15 cm -3 .
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