Electrical properties of lead telluride single crystals doped with Gd
Temperature dependences of electric conductivity, free carrier concentration and mobility in single-crystalline PbTe: Gd samples with a varied impurity content are investigated. The features of electron transport in PbTe: Gd may be caused by a variable gadolinium valence. The striking result from the Seebeck coefficient measurements is that the thermoelectric power factor increases dramatically. Measurements of the magnetic susceptibility at low temperatures permit us to suggest that Gd ions exist in different charge states.
Structural and Thermoelectric Properties of Black Arsenic–Phosphorus
Here, we report the structural and temperature-dependent transport properties of AsxP1–x (x = 0, 0.2, 0.5, 0.83, and 1) alloys. It is observed that black phosphorous-related phonon modes in the all...
IV-VI SEMIMAGNETIC SEMICONDUCTORS WITH RARE EARTH IONS*
The electronic and magnetic properties as well as the applications of IV-VI semiconductors with rare earth ions of Eu and Yb are briefly discussed. The detailed analysis is presented of the recent experimental investigations of the magnetic and transport properties of IV—VI semimagnetic crystals with Gd. It concerns, in particular, the effect of Fermi level position controlled f—f exchange interaction between Gd ions in Sn1-xGdxΤe.