Effect of γ-ray radiation on electrical properties of heat-treated Tb x Sn1 − x Se single crystals

Abstract

The effect of γ ray radiation on the electrical properties of heat treated Tb 0.01 Sn 0.99 Se (sample 1) and Tb 0.05 Sn 0.95 Se (sample 2) samples is studied. It is found that, as a result of irradiation with γ ray 1.25 MeV photons, the charge carrier concentration decreases in the temperature range T = 77-200 K by 17 and 6.3% for samples 1 and 2, respectively. It is assumed that, in the course of irradiation with γ ray photons, terbium impurity atoms are located between sites of the crystal lattice; in addition, Frenkel defects are formed.

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

“…As was expected, an increase in the number of paramagnetic atoms of Pr, Tb, Er brought about a decline in heat conduction. A growth in the number of REE atoms in the composition leading to a decrease in heat conduction is related to nonregulability of crystallic structure of phonons and other scatterings on defects [8,9].…”

“…Irradiation is the cause of the appearance of defects in a crystal where vacancies, atoms in the interstitial site and various types of complexes are in interaction with one another and with chemical impurities. Radiation defects compensate themselves and conduction of semiconductors approaches intrinsic conduction [9]. Under the action of γ -rays in 0.01 0.99…”

“…The nature of chemical interaction between REE and various halcogenides is not the same. However, their sulphides and selenides possess high mechanical strength and stability [9]. Of importance are the obtaining and complex investigation of physical properties and the effect of external factors, especially radiation on SnSe crystals doped with REE or solid solutions with small concentrations.…”

Stability & durability of self-driven photo-detective parameters based on Sn1−βSbβSe (β = 0, 0.05, 0.10, 0.15, 0.20) ternary alloy single crystals

“…Various electrical and thermoelectric properties of SnSe have been investigated in the literature by alloying different metals Alkali ions such as Ag, 26,27 Na 28,29 , In, 30 Sm, 31 Cd, 32 Sb, 33–35 K, 18 Al, 36 Cu, 25,37 Pb, 38,39 Bi, 40 Li, 41 Br, 38 Ge, 42 Te, 43 Ti, 39 Zn, 44 Tl, 45 Ru, 46 Ce, 47 Er, 48 and Tb. 49 Antimony alloying SnSe has not been extensively investigated as a photodetection material among these described materials. Therefore, the authors have presented investigation efforts made to study the structural, optical, vibration, and photo conduction properties of antimony alloyed tin selenium crystals ( i.e.…”