Studies on optical, mechanical, dielectric properties of bisthiourea nickel bromide NLO single crystal

Sagadevan, Suresh

doi:10.1016/j.ijleo.2014.08.059

Cited by 15 publications

(5 citation statements)

References 12 publications

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“…These curves suggest that the dielectric loss is strongly dependent on the frequency of the applied field, similar to that of dielectric constant. This behavior is common in the case of ionic systems 16,17 .…”

Section: Dielectric Studiesmentioning

confidence: 73%

Analysis on the Growth and Characterization of a Non-linear Optical Single Crystal: L-Cystine Dihydrobromide

Mohammed

Arulappan

Ganesan³

et al. 2015

Mat. Res.

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Nonlinear optical single crystals of L-cystine dihydrobromide (LCHB) have been grown by slow evaporation method. Single crystal X-ray diffraction analysis revealed the crystal system and lattice parameter values. Powder X-ray diffraction analyses have been carried out and the diffraction patterns have been indexed. Fourier transform infrared (FTIR) analysis confirms the various functional groups present in the grown crystal. The thermal behavior of the grown crystal was investigated by DTA and TGA analysis. The optical properties of the crystals were determined using UV-Visible transmittance spectrum. The dielectric constant and dielectric loss of the crystal are studied as a function of frequency for various temperatures. The SHG efficiency of the crystal is studied using the Kurtz and Perry technique.

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Section: Dielectric Studiesmentioning

confidence: 73%

Analysis on the Growth and Characterization of a Non-linear Optical Single Crystal: L-Cystine Dihydrobromide

Mohammed

Arulappan

Ganesan³

et al. 2015

Mat. Res.

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“…The higher values of dielectric loss at low frequencies originate from space charge polarization mechanism and the characteristic of low dielectric loss at high frequencies reveals that the grown crystal possesses relatively high optical quality with low defect density. The behaviour of low dielectric loss with high frequency for the crystal suggests that the crystal possess enhanced optical quality with lesser defects and this parameter plays a vital role for the fabrication of nonlinear optical devices 22,23 .…”

Section: Dielectric Studiesmentioning

confidence: 99%

“…Normally when the crystal is dissolved in the solvent, well defined etch pits are formed. The formation of the etch pits is assumed to be the reverse of growth process 23 . The surface of the crystals was polished very well before the etching process.…”

Section: Etching Studiesmentioning

confidence: 99%

Investigation on Physical Properties of Semiorganic Nonlinear Optical Glycine Zinc Sulfate Single Crystal

Nithya¹,

Mahalakshmi²,

Sagadevan³

2015

Mat. Res.

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Nonlinear optical single crystals of Glycine Zinc Sulfate (GZS) were grown by slow evaporation technique. Single crystal X-ray diffraction analysis revealed the crystal system and lattice parameter values. Powder X-ray diffraction analyses have been carried out and the diffraction patterns have been indexed. The optical properties of the crystals were determined using UV-Visible spectroscopy. Optical constants such as band gap, refractive index, extinction coefficient and electric susceptibility were determined from UV-Visible spectroscopy. The refractive index was determined using Brewster's angle method. Hardness of the GZS crystal was estimated by Vicker's hardness studies. Second Harmonic Generation (SHG) of GZS crystal was investigated by Kurtz powder technique. The dielectric constant and dielectric loss measurements were carried out for different temperatures and frequencies. The photoconductivity studies confirm that the grown crystal has negative photoconductivity nature. In order to investigate the growth mechanism and surface features, etching studies are carried out for the crystal.

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“…The high value of dielectric constant at low frequencies is attributed to space charge polarization. At lower range of frequencies the dielectric constant decreases sharply with frequency becoming constant at larger frequencies [47,48]. The polar- Fig.…”

Section: Dielectric Studiesmentioning

confidence: 92%

Growth and Characterization of Non-Linear Optical Single Crystal: L-cysteine Hydrochloride Monohydrate

Azeezaa

Pragasam

Sunitha³

et al. 2015

Acta Phys. Pol. A

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Nonlinear optical single crystals of L-cysteine hydrochloride monohydrate (LCB) were grown by slow evaporation technique. Single crystal X-ray diraction analysis revealed the crystal system and helped to determine lattice parameter values. Powder X-ray diraction analyses were carried out and the diraction patterns were indexed. The optical properties of the crystals were determined using UV-visible spectroscopy. Optical constants such as refractive index, extinction coecient and electric susceptibility were determined from UV-visible spectroscopy. The Fourier transform infrared studies conrmed the various functional groups present in the grown crystal. The mechanical behaviour of the grown crystals was studied using Vicker's microhardness tester. The thermal analysis conrmed that the crystal was stable up to 108.7• C. The dielectric constant and the dielectric loss measurements were carried out for dierent temperatures and frequencies. Second harmonic generation of LCB crystal was investigated by the Kurtz powder technique.

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Studies on optical, mechanical, dielectric properties of bisthiourea nickel bromide NLO single crystal

Cited by 15 publications

References 12 publications

Analysis on the Growth and Characterization of a Non-linear Optical Single Crystal: L-Cystine Dihydrobromide

Analysis on the Growth and Characterization of a Non-linear Optical Single Crystal: L-Cystine Dihydrobromide

Investigation on Physical Properties of Semiorganic Nonlinear Optical Glycine Zinc Sulfate Single Crystal

Growth and Characterization of Non-Linear Optical Single Crystal: L-cysteine Hydrochloride Monohydrate

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