Original scientific paper
The linear terms of magnetoresistance for n-type lead sulphide at 300 K
Mohamed S. Zaghloul
; Dept. of Physics, Faculty of Science, Al-Azhar University, Nasr City, Cairo, Egypt
Abstract
The longitudinal magnetoresistance (MR) of n-type lead sulphide PbS with carrier concentration of 1015 cm-3 was measured at 300 K. These measurements were done under a weak electric and magnetic fields. The anomalous linear terms Δq/q0 (B2) and the positive normal components Δq/q0 (B2) of MR were calculated from B-MR dependence at different rotational angles θ between the magnetic field B and current direction I. This shows that the MR is not only even power of B dependent, but also an odd power of B dependent phenomenon. The anomalous behaviour of longitudinal MR was observed at the two reversal directions of B. These results may be attributed to the irregular change in the direction of induced Hall field at different θ as a result of deviation of the current flow direction from the axis of symmetry.
Keywords
Hrčak ID:
331151
URI
Publication date:
2.2.1987.
Visits: 464 *