Synchronized effect of Ca2+ ion doping concentration on structural, UV–vis and second harmonic generation efficiency of zinc thiourea chloride (ZTC) crystal: An interesting comparative study

Crystal Research and Technology

Baig

Pandian³

et al. 2018

Self Cite

High-end nonlinear optical devices demand superior quality KH 2 PO 4 crystal and to meet this necessity slow solvent evaporation technique is employed to grow optical quality potassium dihydrogen orthophosphate (KH 2 PO 4 , KDOP) crystal by doping tartaric acid (TA) and special attention is devoted to optimize the defect influenced properties of KDOP crystal. The incorporation of TA in KDOP crystal matrix is evaluated by employing energy dispersive spectroscopic technique. The crystalline phase and structural dimensions of pure and TA doped KDOP crystal is evaluated by means of powder X-ray diffraction analysis. The luminescence behavior of TA doped KDOP crystal is examined in visible region and violet colored emission is evidenced at 408 nm. The Vickers microhardness studies are carried out to uncover the constructive influence of TA on hardness and elastic stiffness coefficient of KDOP crystal. Impressive role of TA in minimizing defect density and improving the surface growth mechanism of KDOP crystal is explored by chemical etching analysis. The thermogravimetric analysis curve is traced within 30-650°C and TA doped KDOP crystal is found thermally stale up to 233°C. The results are appraised to propose the suitability of TA doped KDOP crystal for distinct applications.

Section: Resultssupporting

confidence: 84%

Optimizing Structural, Microhardness, Surface Growth Mechanism, Luminescence and Thermal Traits of KH₂PO₄ Crystal Exploiting Multidirectional H‐Bonding Quality of Dopant Tartaric Acid

Crystal Research and Technology

Baig

Pandian³

et al. 2018

Self Cite

“…The rigorous development in semiorganic nonlinear optical (NLO) thiourea metal complex (TMC) crystals has aroused the interest of research community as they offer excellent characteristics when compared with organic and inorganic counterparts. Currently, the NLO crystals are mainly processed for using in designing of distinct optoelectronic and photonic devices [1][2][3]. In the past few years a large range of TMC crystals have been reported and extensively studied by many researchers [4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Comparative analysis on microhardness and third order nonlinear optical traits of pure and Nd³⁺ doped zinc tris-thiourea sulphate (ZTS) crystal

Muley

Materials Science-Poland

et al. 2018

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Present investigation is aimed to explore the single crystal growth, microhardness and third order nonlinear optical (TONLO) properties of Nd3+ doped zinc tris-thiourea sulphate (ZTS) crystal. The commercial slow solvent evaporation technique has been chosen to grow a good quality ZTS (12 mm × 0.5 mm × 0.3 mm) and Nd3+ doped ZTS (11 mm × 0.6 mm × 0.4 mm) single crystals. Vickers microhardness test has been employed to analyze the influence of Nd3+ dopant on the hardness behavior of ZTS single crystal. The TONLO effects occurring in Nd3+ doped ZTS single crystal have been evaluated by means of Z-scan technique using a He–Ne laser operating at 632.8 nm. The close and open aperture Z-scan configuration have been used to determine the nature of TONLO refraction n2 and absorption β, respectively. The magnitudes of vital TONLO parameters, such as refraction n2, absorption coefficient β, figure of merit and susceptibility χ3 of the Nd3+ doped ZTS single crystal, have been determined using Z-scan transmittance data. The n2, β, and χ3 of Nd3+ doped ZTS single crystal were found to be of the order of 10−10 cm2/W, 10−6cm/W and 10−5 esu, respectively.

Materials Science-Poland

“…The transmittance of a crystal is controlled by the presence of optically active functional groups, orientation of molecules along the specified plane and the presence of defect centers. It is obvious that the presence of defect centers causes scattering/absorption of light in crystal medium which leads to the loss of optical signal [22][23][24][25]. The enhanced transmittance evident in glycine doped KDP crystal can be attributed to glycine doping which offers inherent low absorption characteristics of amino acid and suppresses the effect of structural/crystalline defects [26].…”

Section: Resultsmentioning

confidence: 99%

Linear-nonlinear optical, dielectric and surface microscopic investigation of KH₂PO₄ crystal to uncover the decisive impact of dopant glycine

Khan¹,

Kalainathan

Baig

et al. 2018

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Present investigation has been started to perform the comparative study of pure and glycine doped KH 2 PO 4 (KDP) single crystals grown by most commercial slow solvent evaporation technique. The grown crystals were subjected to single crystal X-ray diffraction analysis to determine their structural parameters. The linear optical studies of pure and glycine doped KDP crystal have been undertaken within 200 nm to 1100 nm wavelength range by means of UV-Vis studies. The enhancement in second harmonic generation (SHG) efficiency of glycine doped KDP crystal has been determined using a standard Kurtz-Perry powder test. The dielectric measurements have been carried out to explore the impact of glycine dopant on dielectric constant and dielectric loss of KDP crystal. The surface growth habitat and etch pit density of glycine doped KDP crystal have been evaluated using the results of microscopic etching studies. In light of obtained results the suitability of glycine doped KDP crystal for device applications has been discussed.