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Shock wave induced defect engineering on structural and optical properties of pure and dye doped potassium dihydrogen phosphate crystals
Zeitschrift für Kristallographie - Crystalline Materials ( IF 1.2 ) Pub Date : 2020-07-28 , DOI: 10.1515/zkri-2020-0017
Sivakumar Aswathappa 1 , Eniya Palaniyasan 2 , Sahaya Jude Dhas Sathiyadhas 3 , Kalyana Sundar Jayaperumal 2 , Sivaprakash Paramasivam 4 , Arumugam Sonachalam 4 , Martin Britto Dhas Sathiyadhas Amalapushpam 1
Affiliation  

Abstract Based on the importance of the shock recovery experiments, the authors report the structural and optical properties of pure and 0.001 M dye-doped potassium dihydrogen phosphate (KDP) crystals for virgin and shock wave loaded samples. Rhodamine B and Methylene blue dyes are selected as dopants to be doped with KDP crystal for the present investigation. The test crystals of pure and doped KDP crystals are grown by slow evaporation technique and cut and polished crystals of (200) face are used for the present investigation. Table-top pressure driven shock tube is utilized for the shock wave generation and the used functional Mach number is 1.7. Virgin and shock wave loaded test crystals’ surface morphology, structural properties and optical transmissions are observed using optical microscope, powder X-ray diffractometer and UV-Visible spectrometer, respectively. Crystalline nature and optical transmission of pure and doped KDP crystals are found to have reduced by the impact of shock waves. It occurs due to the enhancement of defect concentration on the surface of the test crystals. From the observed results, we assert that the pure KDP crystal is relatively more stable to shock wave induced damage compared to doped KDP crystals as reflected by structural and optical studies.

中文翻译:

冲击波诱导缺陷工程对纯和染料掺杂的磷酸二氢钾晶体结构和光学特性的影响

摘要 基于冲击恢复实验的重要性,作者报告了纯的和 0.001 M 染料掺杂的磷酸二氢钾 (KDP) 晶体的结构和光学特性,用于原始和冲击波加载的样品。本研究选择罗丹明 B 和亚甲蓝染料作为掺杂剂以掺杂 KDP 晶体。纯和掺杂 KDP 晶体的测试晶体是通过缓慢蒸发技术生长的,并且 (200) 面的切割和抛光晶体用于本研究。采用台式压力驱动激波管产生激波,使用的功能马赫数为1.7。使用光学显微镜观察原始和冲击波加载的测试晶体的表面形态、结构特性和光学透射率,分别为粉末 X 射线衍射仪和紫外-可见光谱仪。发现纯 KDP 晶体和掺杂 KDP 晶体的晶体性质和光透射率因冲击波的影响而降低。它是由于测试晶体表面缺陷浓度的增加而发生的。根据观察到的结果,我们断言,与结构和光学研究所反映的掺杂 KDP 晶体相比,纯 KDP 晶体对冲击波诱导的损伤相对更稳定。
更新日期:2020-07-28
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