研究目的
Investigating the effect of elastic stresses on the formation of a periodic surface relief under pulsed laser irradiation of epitaxial layers of CdxHg1–xTe solid solutions.
研究成果
The formation of a periodic surface relief under pulsed laser irradiation is attributed to the simultaneous action of nonequilibrium recrystallization and mechanical stresses arising from the temperature gradient during the phase transition. The study highlights the importance of thermoelastic stresses in the surface relief formation process.
研究不足
Direct calculation of thermoelastic stresses is complicated due to the lack of material parameters at high temperatures. The model used simplifies the recrystallization process by assuming the melt composition is identical to the initial material.
1：Experimental Design and Method Selection:
The study involved irradiating epitaxial layers of CdxHg1–xTe solid solutions with pulsed laser radiation to observe the formation of a periodic surface relief.
2：Sample Selection and Data Sources:
Epitaxial layers grown by liquid-phase epitaxy on ZnxCd1–xTe substrates were used.
3：List of Experimental Equipment and Materials:
A DF laser with specific parameters was used for irradiation. A JEOLS scanning electron microscope and a digital microscope were used for observation.
4：Experimental Procedures and Operational Workflow:
The layers were irradiated with laser pulses, and the resulting surface relief was observed and analyzed.
5：Data Analysis Methods:
The analysis involved observing the surface relief and calculating thermal fields to understand the formation of thermoelastic stresses.
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