Abstract In the modern era materials with high NLO efficiency, better mechanical and thermal properties are on leading edge and highly demanded for their efficient use in optical communication and fibers optics. In the present course of work, authors have grown successfully single crystals of l -alanine strontium chloride trihydrate(LASRT) by slow evaporation solution and slow cooling techniques so as to meet the demand of industries. Structure of the grown crystal with lattice parameters were confirmed by employing powder XRD technique. Mechanical strain present in the lattice is determined as −7.066 × 10−2 by Williamson-Hall relation. The newly grown crystals were subjected to HRXRD to assess crystal perfection and various types of defects. In this research, quality of the grown crystals is found moderately good. The specimen has better transmission nearly 44% as indicated by UV–Vis spectra. Various remarkable parameters like optical band gap, reflectance, refractive index, extinction coefficient and electrical susceptibility are determined. Some important electronic parameters are calculated by using Claussius-Mossottee relation. Thermal properties were also investigated in detail by subjecting the crystals to TGA/DTA measurements. By photo acoustic analysis, thermal diffusivity (α) is found 1.8816 × 10−6 m2/s which indicates large heat bearable capacity of the grown sample. Mechanical stability of LASRT is determined larger than already reported LOMHCl and LLHBr single crystals by Nano-indentation technique. Results for nonlinear optical testing, crystalline perfection and optoelectronic parameters indicate its suitability for laser applications.

中文翻译：

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用于非线性光学和光子应用的溶液生长 L-丙氨酸氯化锶三水合物单晶关键方面的研究

摘要 在具有高 NLO 效率的现代材料中，更好的机械和热性能处于领先地位，并且对其在光通信和光纤中的有效使用提出了很高的要求。在目前的工作过程中，作者通过慢蒸发溶液和缓冷技术成功地生长了L-丙氨酸氯化锶三水合物（LASRT）单晶，以满足工业需求。通过采用粉末 XRD 技术证实了具有晶格参数的生长晶体的结构。存在于晶格中的机械应变由威廉姆森-霍尔关系确定为 -7.066 × 10-2。对新生长的晶体进行 HRXRD 以评估晶体的完整性和各种类型的缺陷。在这项研究中，发现生长的晶体质量中等。UV-Vis 光谱表明，样品具有更好的透射率，接近 44%。确定了各种显着参数，如光学带隙、反射率、折射率、消光系数和电敏感性。一些重要的电子参数是通过克劳修斯-莫索蒂关系计算出来的。还通过对晶体进行 TGA/DTA 测量来详细研究热性能。通过光声分析，发现热扩散率 (α) 为 1.8816 × 10−6 m2/s，这表明生长的样品具有较大的耐热能力。通过纳米压痕技术确定 LASRT 的机械稳定性大于已报道的 LOMHCl 和 LLHBr 单晶。非线性光学测试、晶体完美度和光电参数的结果表明其适用于激光应用。