PHOTOMAGNETIC EFFECT IN Pb1 - xSnxTe AT LOW TEMPERATURES.

Results of studying the photomagnetic emf and the photoconductivity in the Pb//1// minus //xSn//xTe at low temperatures by the lock-in detection method under weak photosignal conditions ( DELTA //n less than less than n) show that the photomagnetic current increased linearly with rising magnetic field and then reached saturation when this field reached a few kilooersteds. This was evidence of a high minority-carrier (hole) mobility at low temperatures; the dependences I//P//M(H) indicated that the surface recombination velocity s was low; the photomagnetic signal depended quite strongly on temperature and, at T equals 77 degree K, the samples exhibited practically no photomagnetic emf; and oscillations of the photomagnetic emf as a function of the magnetic field intensity were exhibited by some samples at 4. 2 degree K. These oscillations were clearly associated with the quantitation of the electron energy spectrum in a magnetic field.