scholarly journals Thermodepolarization of Bi12SiO20 Crystals Doped with Fe

2021 ◽  
Vol 66 (11) ◽  
pp. 988
Author(s):  
T.V. Panchenko ◽  
L.M. Karpova ◽  
Yu.N. Potapovich
Keyword(s):  
Optical Absorption ◽  
Space Charge ◽  
Temperature Interval ◽  
Temperature Dependences

The polarization processes in Bi12SiO20 crystals doped with Fe (Bi12SiO20 : Fe) in the temperature interval 300–800 K are studied by the thermoactivation spectroscopy methods. The temperature dependences of the thermostimulated depolarization (TSD) currents and the dependences of the intensities of TSD current peaks on the polarization conditions are obtained. The mechanisms of space charge and quasidipole polarizations are revealed. The temperature dependences of the optical absorption of Bi12SiO20 : Fe crystals are also investigated.

Temperature dependences of optical absorption and its light-induced changes in sillenite crystals

2007 ◽  
Author(s):  
S. M. Shandarov ◽  
L. E. Polyakova ◽  
A. E. Mandel ◽  
M. G. Kisteneva ◽  
J. Vidal ◽  
...  
Keyword(s):  
Optical Absorption ◽  
Temperature Dependences ◽  
Induced Changes

scholarly journals Temperature dependence of the optical absorption edge of doped gallium arsenide

2020 ◽  
Vol 21 (2) ◽  
pp. 288-293
Author(s):  
Ig. Iv. Chychura ◽  
I. I. Turianytsia ◽  
Iv. Iv. Chychura
Keyword(s):  
Optical Absorption ◽  
Absorption Coefficient ◽  
Temperature Dependence ◽  
Absorption Edge ◽  
Edge Region ◽  
Optical Absorption Edge ◽  
Semiconductor Crystals ◽  
Einstein Model ◽  
Temperature Dependences ◽  
Bose Einstein

The temperature dependences of the optical absorption edges of Zn doped GaAs semiconductor crystals have been measured from 300 to 560 K. The temperature dependence of the optical absorption in the Urbach edges is adequately reproduced by a Bose-Einstein model. Analysis of experimental results gave us the opportunity to offer an explicit function of two arguments (photon energy and temperature) for the absorption coefficient of doped crystals in the Urbach edge region.

Specific features of the electronic and crystal structure of CuxZrSe2 (0 < x ≤ 0.3)

2020 ◽  
Vol 8 (24) ◽  
pp. 8290-8304
Author(s):  
A. S. Shkvarin ◽  
A. I. Merentsov ◽  
Yu. M. Yarmoshenko ◽  
M. S. Postnikov ◽  
E. G. Shkvarina ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Magnetic Susceptibility ◽  
Electronic Structure ◽  
Optical Absorption ◽  
Copper Concentration ◽  
Transmission Spectra ◽  
Temperature Dependences ◽  
Crystal And Electronic Structure

Crystal and electronic structure, optical absorption and transmission spectra, temperature dependences of conductivity and magnetic susceptibility were studied for copper intercalated ZrSe2 in the copper concentration range of 0 ≤ x ≤ 0.3.

scholarly journals Influence of Ag2Te on Transport Properties of (AgS-bTe2)0.9(PbTe)0.1

2021 ◽  
Vol 66 (11) ◽  
pp. 983
Author(s):  
S.S. Ragimov ◽  
M.A. Musayev ◽  
N.N. Hashimova
Keyword(s):  
Electrical Conductivity ◽  
Differential Scanning Calorimetry ◽  
Temperature Dependence ◽  
Transport Properties ◽  
Thermoelectric Power ◽  
Temperature Interval ◽  
Hall Coefficient ◽  
Scanning Calorimetry ◽  
Maximum Value ◽  
Temperature Dependences

The transport properties of (AgSbTe2)0.9(PbTe)0.1, namely, the electrical conductivity and the Seebeck (S) and Hall (RH) coefficients, are studied in the temperature interval 80–560 K. An endothermic peak at 410 K is found by the differential scanning calorimetry (DSC). Sharp changes in the temperature dependences of the electrical conductivity and thermoelectric power in the region near 410 K are observed. The temperature dependence of Hall coefficient passes through maximum at ∼200 K and has negative sign. It is shown that, these peculiarities are due to the presence of the Ag2Te phase. The thermoelectric Z-factor has the maximum value of 2.7 × 10−3 K−1 at 400 K.

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