X‐Ray and Thermal Studies on ZnxMg1-x SO4.7H2O Crystals

Premkumar, P. Sumithraj; Shajan, X. Sahaya

doi:10.1155/2010/518510

Cited by 4 publications

(3 citation statements)

References 4 publications

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“…The plot of the product of absorption coefficient and photon energy (αhυ) 2 versus the photon energy (hυ) at room temperature shows a linear behavior, which can be considered as evidence for direct transition. [ 37 ] Extrapolation of the linear portion of this curve to a point (αhυ) 2 = 0 gives the optical energy band gap E g for the triglycine oxalate crystal and which is found to be 3.80 eV.…”

Section: Resultsmentioning

confidence: 99%

Characterization Studies of Solution Grown Triglycine Oxalate Single Crystals

Premkumar

2022

Crystal Research and Technology

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Triglycine oxalate single crystal is grown by a slow evaporation technique from the saturated solution at the predetermined temperature. X‐ray diffraction studies of the grown crystal reveal that the grown crystal belongs to a monoclinic structure. The presence of elements and various functional groups of the triglycine oxalate is found in the Fourier transform infrared analysis. Optical transparency of the grown crystals is found to have the maximum transparency in the entire visible region. Thermogravimetric analysis shows that the grown crystals have three stages of decomposition. The microhardness of the grown crystals exhibits that the crystal is a soft material. The electrical studies such as dielectric constant, and dielectric loss are determined for the frequency range from 100 Hz to 200 kHz at different temperatures.

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Section: Resultsmentioning

confidence: 99%

Characterization Studies of Solution Grown Triglycine Oxalate Single Crystals

Premkumar

2022

Crystal Research and Technology

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“…The lattice parameters of pure, 0.25 M and 0.5 M zinc added MgO nanoparticles were determined by considering high reflections from the PXRD pattern using the method adopted in the literature. 19,20 The average grain size has been estimated using the Debye-Scherrer formula. The calculated lattice volume and grain size of pure and zinc added MgO nanoparticles are presented in Table 1.…”

Section: Structural Studiesmentioning

confidence: 99%

Structural and electrical studies on zinc added magnesium oxide nanoparticles

Premkumar¹

2020

JPS

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Magnesium oxide (MgO, pure) and zinc added MgO nanoparticles were synthesised by a simple microwave assisted solvothermal method. The concentrations of impurity used in the present work were 0.25 M and 0.50 M. All samples were annealed at 400°C for 1 h to improve the ordering. The prepared pure and zinc added magnesium oxide nanoparticles were characterised by powder X-ray diffraction (PXRD), energy dispersive spectroscopy (EDS) and scanning electron microscopy (SEM). PXRD studies of pure and zinc added MgO nanoparticles showed that all samples belong to crystalline nature with cubic structure. The grain size of all samples were determined from the XRD results and it belongs to nano meter scale. The EDS confirmed the presence of zinc, magnesium and oxide elements in the respective prepared samples. The scanning electron microscope images confirmed that the prepared samples possess nanometer dimensions. The electrical properties such as AC conductivity, dielectric constant and dielectric loss were measured at different temperatures in the different frequency range by involving the impedance analyser of all the prepared samples.

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“…As a result, L-arginine forms a number of salts with organic and inorganic acids showing non-linear optical properties [1][2]. L-arginine phosphate, Larginine diphosphate, L-arginine perchlorate, Larginine nitrate, L-arginine fluoride, L-arginine maleate, L-arginine formate, L-arginine acetate [3], etc., are some of the interesting NLO L-arginine crystals. All the compounds of L-arginine are crystallized in noncentrosymmetric group, because this class contains an optically active C-atom.…”

Section: Introductionmentioning

confidence: 99%

Growth and characterization of L-arginine sulphate: A new nanocrystal with non linear optical behaviour

Khandpekar¹,

Patil

2013

AIP Conference Proceedings

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Articles you may be interested inBulk growth of organic nonlinear optical (NLO) L-arginine 4-nitrophenolate 4-nitrophenol dihydrate (LAPP) single crystals by SR method AIP Conf.Extremely high damage threshold of a new nonlinear crystal L-arginine phosphate and its deuterium compound Abstract. L-arginine combines with a variety of salts and acids to form a potential non-linear optical material. Nano crystals of L-arginine-Sulphate (LAS) have been grown from solution by the slow evaporation technique for the first time. The single phase formation has been verified by XRD studies. TEM studies confirm the formation of nanocrystallites of particle size of about 34nm. The optical absorption studies shows presence of a sharp UV cut-off region at 239.57nm. Further the presence of wide transparency window in the entire visible region shows its use for optoelectronic applications. Energy Dispersive X-ray Analysis (EDAX) confirms the presence of potassium and sulphur in the grown nanocrystal of LAS. Fungus growth has been avoided by subjecting the solution to pre-heat treatment.Preliminary studies indicate presence of non-linear optical (NLO) response.

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X‐Ray and Thermal Studies on Zn_xMg_1-x SO₄.7H₂O Crystals

Cited by 4 publications

References 4 publications

Characterization Studies of Solution Grown Triglycine Oxalate Single Crystals

Characterization Studies of Solution Grown Triglycine Oxalate Single Crystals

Structural and electrical studies on zinc added magnesium oxide nanoparticles

Growth and characterization of L-arginine sulphate: A new nanocrystal with non linear optical behaviour

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