Structural aspects of thermal properties of AgCuS compound

Abstract

The crystal structure and thermal properties of AgCuS compound were investigated at high temperature ranges. It was found that the crystal structure of these compounds has orthorhombic symmetry with Cmcm space group at the normal condition and room temperature. The phase transition to cubic symmetry with Fm3m space group is observed at [Formula: see text] temperature. The endoeffect was observed with a central peak at [Formula: see text] in the differential thermal analysis. The temperature dependence on heat capacity was obtained in the range of [Formula: see text] temperature. Thermodynamic parameters have been determined: enthalpy and heat capacity. The value of enthalpy was calculated according to the temperature of the phase transition.

Photoluminescence and phonon spectrum studies of arsenide sulfide compound doped with rare earth elements

“…The PL lines depicted in Figure 1 are mainly related to the Fermi level and defect states located in the center of the band gap. Photoluminescence spectra in this region (at 800-950nm) were also observed in our previous work [12][13][14][15][16][17][18][19][20][21][22][23][24].…”

Preparation of N-Si-P-GaSe Heterojunctions Based on an Amorphous GaSe Layer Without Impurities and Study of Their Electrical Properties

“…Figure 1 shows the volt-farad characteristics of n-Si -p-GaSe structures on a cold substrate (1) and thermally annealed (2). It can be seen from Figure 1 that the dependence of C 2 ~ f(U) has a linear character in the thermally annealed sample (curve 2), while deviations from the linear dependence are observed in the sample with a cold base at high voltages.…”

“…The main reason for this is that they have different functional properties. Due to the change in functions under the influence of the size effect, extensive research is being carried out on these materials at the atomic level [1][2][3][4][5][6][7]. The study of heterojunctions in these materials is of particular importance [8][9][10].…”

Change of thermophysical parameters of polypropylene-metal oxide nanocomposite (polypropylene + ZrO2) after electric field influence

“…10,11 Free Gibbs energy, heat capacity, enthalpy and entropy in the materials can be calculated using this method. [12][13][14][15] This paper presents the results of DSC studies of the PP+ZrP 2 nanocomposite exposed and not exposed to the electric field effect. The work aims to establish patterns of change in the set of thermophysical properties depending on the applied electric field.…”