Structural, spectral, optical and dielectric properties of copper and glycine doped LAHCl single crystals

Sangeetha, K.; Babu, R. Ramesh; Bhagavannarayana, G.; Ramamurthi, K.

doi:10.1016/j.saa.2011.04.014

Cited by 10 publications

(5 citation statements)

References 19 publications

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“…The functional groups and the various bond vibrations have been confirmed for both crystals and their corresponding FTIR spectra is shown in Figure a,b. Different absorption frequencies have been assigned to different bond vibrations [ 10 ] and are tabulated in the ( Table 1 ). Important functional group and other vibrations ( NH 3 + , C = N, C─CH, COO − ) are identified for both the crystals.…”

Section: Resultsmentioning

confidence: 99%

“…[ 7 ] In particular, l ‐arginine monohydrochloride (LAHCl) has attracted much attention for frequency doubling, electro‐optic modulations, third‐order susceptibility effects such as nonlinear refraction, nonlinear absorption and optical limiting. [ 8–11 ] Therefore, LAHCl has been chosen as host material for the present work and organic azo dye (methyl orange) has been chosen as a dopant in order to analyze the changes in the optical limiting behaviors.…”

Section: Introductionmentioning

confidence: 99%

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Reverse Saturable Absorption and Optical Limiting Application of Methyl Orange Dye Doped l‐Arginine Monohydrochloride (LAHCl) Single Crystals

Ragunath

Sangeetha

Babu

2020

Crystal Research and Technology

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Chromophores in azo dyes are optically active and play an important role in modifying the optical nonlinear properties. Methyl orange (MO), an azo dye, has been chosen to dope with l‐arginine monohydrochloride (LAHCl), in order to tune the nonlinear optical properties. Pristine and MO doped LAHCl single crystals are grown by slow solvent evaporation method at ambient conditions. The grown crystals are confirmed by powder X‐ray diffraction and Fourier transform infrared studies. The crystals are subjected to linear and nonlinear optical characterizations. Decrease in optical band gap with increase in refractive index and birefringence are attributed to the increase in net macro‐polarizability of the doped LAHCl. Both pristine and MO doped crystals exhibit reverse saturable absorption (RSA) in Z‐scan measurements. The samples show optical limiting behavior under laser irradiation at 650 nm. The chromophore of MO has a significant role in enhancing RSA and optical limiting behavior of LAHCl.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Reverse Saturable Absorption and Optical Limiting Application of Methyl Orange Dye Doped l‐Arginine Monohydrochloride (LAHCl) Single Crystals

Ragunath

Sangeetha

Babu

2020

Crystal Research and Technology

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“…5.16 eV was determined to be an accurate value for the band gap. Because of the large band gap that it has, the glycine-doped ammonium bicarbonate crystal is an excellent candidate for use in optoelectronic devices [27].For optoelectronic devices, the use of materials having optical qualities that define their usefulness is essential. Band gaps (Eg) and extinction coefficient are two optical constants that you need to be aware with in order to do an in-depth analysis of their potential in this field (K).…”

Section: Optical Spectral Studiesmentioning

confidence: 99%

Crystal Growth and Characterization of Single Crystals of Glycine doped with Ammonium Bicarbonate (GABIC) Crystal

Jayachithra,

Meena,

Sundararajan

et al. 2023

Preprint

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At room temperature, a suitable conventional technique is used in the formation of a semi-organic single crystal of glycine that had been combined with ammonium bicarbonate (GABIC). Spectroscopic analysis is used to study the generated single crystal of ammonium bicarbonate complexed glycine. Based on the results of single crystal X-ray diffraction examinations, the monoclinic system is determined. The FT-IR spectral research was the method that led to the identification of the many functional groups that are presented in GABIC. Both the UV-visible spectrum and the fluorescence spectrum provide information on the optical and electrical characteristics of the formed crystal, respectively. The optical band gap has been calculated to be 4.49 eV after taking into account the UV absorption curve. A number of optical parameters, such as the extinction coefficient and the reflectance, were also measured and calculated. Vickers microhardness experiments were used to determine the mechanical stability of the generated crystal, and the results showed that the crystal clearly belonged to the soft material group. In order to quantify the material's hardness number (Hv), Meyer's index (n), yield strength (σy), elastic stiffness constant (C11), brittle index (Bi), and fracture toughness (Kc) a Vickers microhardness test was performed on one of the as-grown hard crystals (Hv). Constant frequency measurements of the formed crystal's dielectric constant and dielectric loss were taken. By using a scanning electron microscope, we were able to figure out the morphology of the material's surface. The Nd: YAG laser has been used to assess the damage threshold energy required to cause permanent damage (1064 nm). With the use of the open aperture Z-scan method (Nd: YAG, 532 nm, 9 ns), we are able to determine that the nonlinearity coefficient (β) is 0.95 1010 m/W, which is the outcome of an effective two-photon absorption phenomena. With a fluence threshold of 3.26 1012 W/m2, the GABIC's consequent optical limiting characteristic makes it a promising option for use in optical limiting devices. The creation of GABIC was shown by these experiments, and Glycine was found to be a critical factor in the observed modifications to the crystals' spectral, optical, and mechanical characteristics.

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“…3. The frequencies of the IR vibrations were compared with the similar groups of L-valine, 13 L-valine Hydrochloride, 7 L-Arginine monochloride monohydrate, 14 Cu-L Arginine monochloride monohydrate 14 and their tentative assignments are tabulated in Table 2.…”

Section: Fourier Transform Infrared Studiesmentioning

confidence: 99%

Synthesis, Growth and Characterization of L-Valine Zinc Hydrochloride — A Novel Semi-Organic Nonlinear Optical Single Crystal

Jananakumar¹,

Prabaharan

2013

J. Nonlinear Optic. Phys. Mat.

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Single crystals of L-valine zinc hydrochloride (LVZHCl), a novel semi-organic nonlinear optical material were synthesized and grown from aqueous solution by slow evaporation method at room temperature. The cell parameters of LVZHCl had been determined using single crystal X-ray diffraction technique. The linear and non-linear optical properties of the crystals were studied by Fourier Transform Infrared, Ultraviolet Visible Near infrared, ac impedance, laser damage threshold, and second harmonic generation analysis. The thermal stability of the crystals was assessed by Differential thermalThermogravimetric analysis. The crystallinity and mechanical properties of the crystals were studied by Dielectric behavior and Vickers microhardness test.

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Structural, spectral, optical and dielectric properties of copper and glycine doped LAHCl single crystals

Cited by 10 publications

References 19 publications

Reverse Saturable Absorption and Optical Limiting Application of Methyl Orange Dye Doped l‐Arginine Monohydrochloride (LAHCl) Single Crystals

Reverse Saturable Absorption and Optical Limiting Application of Methyl Orange Dye Doped l‐Arginine Monohydrochloride (LAHCl) Single Crystals

Crystal Growth and Characterization of Single Crystals of Glycine doped with Ammonium Bicarbonate (GABIC) Crystal

Synthesis, Growth and Characterization of L-Valine Zinc Hydrochloride — A Novel Semi-Organic Nonlinear Optical Single Crystal

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