High-field Nonohmic Behavior of the p-type Ferromagnetic Semiconductor AgxCd1−xCr2Se4

The high-field longitudinal magnetoresistance of the ferromagnetic (polycrystalline) p-type semiconductor Ag
x
Cd
1−x
Cr
2
Se
4
has been measured as a function of temperature and applied magnetic and electric fields. It is suggested that the observed “anomalies” may be related to the possible spin wave-carrier wave interactions in these materials.