The Influence of <i>γ</i>-Irradiation on Thermoemf and Heat Conduction of Ln<sub>0.01</sub>Sn<sub>0.99</sub>Se (Ln - Pr, Tb, Er) Monocrystals
- 1 Azerbaijani State Pedagogical University, Baku, Azerbaijan
- 2 Azerbaijani State Pedagogical University, Baku, Azerbaijan
Abstract
Monocrystals are synthesized and grown according to Bridgman - Stockbarger method, and the influence of rare earth elements (REE) as well as of γ -irradiation on electrophysical properties of (SnSe) 1-x - (SnSe) x (Ln - Pr, Tb, Er) alloy system is investigated. During transition from SnSe to (SnSe) 1-x - (SnSe) x solid so lutions, a partial compensation of charge carriers occurs and additional scattering centres appear. At low tem peratures T < 350 K after irradiation with γ -quanta, thermoemf in samples of p -type conduction becomes higher and decreases in those of n - type conduction. In addition, under the influence of γ -rays radiation, defects come into being causing a decrease in lattice heat conduction and a rise in electron heat conduction. REE impurities are supposed to be positioned among the points of crystal lattice during irradiation with γ -quanta and, moreover, Frenkel defects are formed.
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