研究目的
To study the impact of deviation of Ge on the cost of As in Ge-Se-As glassy system in terms of average coordination number, cohesive energy, heat of atomization, and the theoretical optical band gap of the system.
研究成果
Physical properties have been modified linearly by the incorporation of Ge in As37.5-xSe62.5Gex (0≤x≤20) glassy alloys. The physical parameters studied in the present study may give an insight about structural details of the studied samples for optical fiber applications.
研究不足
The study focuses on the ternary Ge-Se-As system, and the findings may not be directly applicable to other chalcogenide glass systems. The experimental conditions and sample preparation methods may also limit the generalizability of the results.
1：Experimental Design and Method Selection:
Melt quench technique was used to prepare bulk samples of As
2：5-xSe5Gex (0≤x≤20). Sample Selection and Data Sources:
5N purity of sample was weighed and sealed in an ampoule under a vacuum of ~ 7 x10-5 mbar.
3：List of Experimental Equipment and Materials:
Diffusion pump [Vacuum Tech. Pvt. Ltd. Banglore, Model No: VT-ACG-03, 2013], rocking furnace, ice cold water.
4：Experimental Procedures and Operational Workflow:
The sealed ampoules are kept in rocking furnace and heated by the rate of 3-4 K/min up to 800 0C and kept for 10 hrs at the same temperature in furnace. Continuous rocking was done to ensure the homogeneity of the sample and molten sample is quenched in ice cold water. X-ray diffraction technique has been used to confirm the amorphous nature of the prepared samples.
5：Data Analysis Methods:
The amorphous nature of synthesized samples has been checked by X-ray diffraction (λ = 1.54 ?, 40kV and 35 mA, 2θ range from 20o to 90o).
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