L-Ornithine Monohydrochloride Doped Zinc Tris-Thiourea Sulphate Single Crystals for NLO Applications
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ORIGINAL PAPER
L-Ornithine Monohydrochloride Doped Zinc Tris-Thiourea Sulphate Single Crystals for NLO Applications B. Suresh Kumar 1 & M. R. Jagadeesh 2 & Sindhu Tilak 1 & H. M. Suresh Kumar 1 Received: 11 June 2020 / Accepted: 29 August 2020 # Springer Nature B.V. 2020
Abstract In the current study, transparent and bulk sized L-ornithine monohydrochloride (LOMHC) added zinc tris-thiourea sulphate (LOMHC-ZTS) single crystals are synthesized successfully by utilizing slow evaporation solution technique (SEST). The obtained crystals are belonging to the orthorhombic system confirmed by single crystal X-ray diffraction technique (SXRD). The strain produced due to dopant inside the crystal and crystallite size is estimated by using powder X-ray diffraction (PXRD) data. The impact of LOMHC on the optical properties of ZTS has been studied in detail. It is observed that the energy gap and transmittance are improved; refractive index and extinction coefficient is decreased upon doping. The dielectric study emphasizes that the LOMHC-ZTS crystal is good in the applicability for NLO device applications. The grown crystals showed improvement in the thermal stability upon doping of LOMHC. The flexibility of the grown crystals in terms of hardness behavior of LOMHCZTS is predicted by Vicker’s microhardness test; with this, yield strength and stiffness constant are calculated. This test revealed that LOMHC-ZTS belongs to soft material category possessing improved mechanical properties. SHG efficiency of ZTS is increased relatively upon the inclusion of LOMHC. These results favor the competency of LOMHC doped ZTS crystal in various NLO and laser assisted applications. Keywords L-Ornithine . ZTS . Optical properties . Dielectric properties . Mechanical properties . SHG
1 Introduction In the development of device fabrication, nonlinear optical (NLO) crystals are much concentrating materials in various industries viz., the electronic industry, photonic industry, and fiber optical communication industry, etc. [1–3]. The reason is that these NLO materials have the ability of frequency conversion as well as high transmission of light because of possessing regular periodic arrangements of atoms in the crystals. That means scattering of light is less. So that single crystals are playing a significant role in the present science and technology.
* H. M. Suresh Kumar [email protected] 1
Department of Physics, Siddaganga Institute of Technology, (Affiliated to Visvesvaraya Technological University, Belagavi), Tumkur 572103, India
2
Department of Physics, Jain Institute of Technology, (Affiliated to Visvesvaraya Technological University, Belagavi), Davangere 577 003, India
Numerous researchers are focusing on the crystals that are showing good NLO property, better transparent nature with more mechanical and thermal stability. On the way to grow good NLO crystals, materials can be synthesized as organic, inorganic, and semi-organic nature. Organic crystals show better optical nonlinearity; however, thermal stability, mechan
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