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• Open Access   Article

  Photocatalytic performance of Fluorine-doped Anatase Titanium dioxide obtained through the Sol-Gel method

  G.D. Gena, T.H. Freeda, K.Monikanda Prabu

  Research Paper | Isroset-Journal (IJSRPAS)

  Vol.6 , Issue.2 , pp.1-4, Apr-2018

  CrossRef-DOI:   https://doi.org/10.26438/ijsrpas/v6i2.14

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  Fluorine-doped anatase TiO2 nanoparticles are prepared using a simple sol-gel method in an NH4F-H2O-C2H5OH mixed solution using the precursor TTIP. The prepared samples are characterized by X-ray diffraction, X-ray photoelectron spectroscopy, and photocatalytic properties. The anatase phase TiO2 nanoparticles are identified by X-ray diffraction data. The X-ray photoelectron spectroscopy indicated that fluorine is doped effectively and most fluorine dopants might be present in the surface of TiO2 nanoparticles. The photocatalytic activity is evaluated by photocatalytic oxidation decomposition of methylene blue (MB) in atmospheric air under Visible light illumination. 84% photocatalytic efficiency observed for 5W% fluorine-doped TiO2 nanoparticles. The higher photocatalytic activity predicted is due to the formation of photocatalytic reactive 〖OH〗^(˙̇)radicals.

  Key-Words / Index Term
  Fluorine-doped anatase TiO2, XRD, XPS, Photocatalytic activity, Methylene Blue degradation

  References
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  Citation
  G.D. Gena, T.H. Freeda, K.Monikanda Prabu, "Photocatalytic performance of Fluorine-doped Anatase Titanium dioxide obtained through the Sol-Gel method," International Journal of Scientific Research in Physics and Applied Sciences, Vol.6, Issue.2, pp.1-4, 2018

• Open Access   Article

  50 MeV, Li³⁺ ion induced modifications in Mössbauer signature and hyperfine interaction parameters of Y_3+xFe_5-xO₁₂ system

  K. B. Modi, J. A. Bhalodia, P. Y. Raval, P. R. Pansara, K. B. Zankat and P. U. Sharma

  Research Paper | Isroset-Journal (IJSRPAS)

  Vol.6 , Issue.2 , pp.5-9, Apr-2018

  CrossRef-DOI:   https://doi.org/10.26438/ijsrpas/v6i2.59

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  The consequences of swift heavy ion (SHI) irradiation (Li3+, 50 MeV, fluence = 5  1013 ions/cm2) on the Mössbauer signature and nuclear hyperfine interaction parameters of polycrystalline Y3+xFe5-xO12; x = 0.0, 0.2, 0.4 and 0.6 garnet system have been studied by means of 57Fe Mossbauer spectroscopy at 300 K. It is found that the formation of yttrium orthoferrite (YFeO3) phase for higher Y3+- concentration compositions can effectively be reversed by swift heavy ion irradiation. Mössbauer spectral analysis reveals the formation of central enhancement in the irradiated samples that indicates the formation of localized paramagnetic centers. Hyperfine parameters analysis throws light on the presence of two magnetic phases corresponding to the ferrimagnetic garnet phase and week ferromagnetic YFeO3 phase. The hyperfine interaction parameters of both the phases are highly influenced by SHII indicating a redistribution of cations and SHI induced formation of paramagnetic centers in the material.

  Key-Words / Index Term
  yttrium iron garnet; swift heavy ion irradiation; Mossbauer spectroscopy

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  Citation
  K. B. Modi, J. A. Bhalodia, P. Y. Raval, P. R. Pansara, K. B. Zankat and P. U. Sharma, "50 MeV, Li³⁺ ion induced modifications in Mössbauer signature and hyperfine interaction parameters of Y_3+xFe_5-xO₁₂ system," International Journal of Scientific Research in Physics and Applied Sciences, Vol.6, Issue.2, pp.5-9, 2018

• Open Access   Article

  THz Generation and Detection by Nonlinear Optical Methods

  Sourabh Mukhopadhyay

  Review Paper | Isroset-Journal (IJSRPAS)

  Vol.6 , Issue.2 , pp.10-20, Apr-2018

  CrossRef-DOI:   https://doi.org/10.26438/ijsrpas/v6i2.1020

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  This article presents a comprehensive review on efficient THz generation by optical rectification and detection by electro-optic sampling. Starting with the basics of optical rectification and electro-optic field sensor, chronological development of the subject is presented. Performance of several zinc-blende crystals for THz generation as well as electro-optics sampling is discussed in detail and their comparative superiority relating to different crystals parameters are justified with experimental results. Organic crystals, due their higher nonlinearity, are important for THz generation by optical rectification and got special attention in this article. Phase-matching for THz generation by optical rectification is always a challenge and this issue is addressed with different schemes employed till date and optical rectification in tilted pulse front geometry is elaborated since it can dramatically increase the effective interaction length by achieving phase-matching. Material absorption in THz domain, which limits the THz generation efficiency, is however overcome by cryogenic cooling and performance of periodically poled lithium niobate under such low temperature for optical rectification in different schemes is presented in detail. The success in continuously increase of THz generation efficiency promises future high power THz devices for their application in basic science and technology. Recent propositions and theoretical models with predictions of orders of magnitude increase in the THz generation efficiency naturally pave the path with future challenges for the experimentalists. This article clearly figures out the directions of future research for THz generation by optical rectification and detection by electro-optic field sensor.

  Key-Words / Index Term
  Optical rectification, Difference frequency generation, Phase-matching, Electro-optic sampling,

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  [59] K. Ravi, W. R. Huang, S. Carbajo, E. A. Nanni, D. N. Schimpf, E. P. Ippen, and F. X. Kärtner, “Theory of terahertz generation by optical rectification using tilted-pulse-fronts”, Optics Express, Vol. 23, No. 4, pp. 5253-5276, 2015.
  [60] S. W. Huang, E. Granados, W. R. Huang, K. H. Hong, L. E. Zapata and F. X. Kärtner, “High conversion efficiency, high energy terahertz pulses by optical rectification in cryogenically cooled lithium niobate”, Optics Letters, Vol. 38, Issue 5, pp.796-798, 2013.
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  [62] K. Ravi, M. Hemmer, G. Cirmi, F. Reichert, D. N. Schimpf, O. D. Mücke, and F. X. Kärtner, “Cascaded parametric amplification for highly efficient terahertz generation”, Optics Letters, Vol. 41, Issue 16, pp. 3806-3809, 2016.
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  Citation
  Sourabh Mukhopadhyay, "THz Generation and Detection by Nonlinear Optical Methods," International Journal of Scientific Research in Physics and Applied Sciences, Vol.6, Issue.2, pp.10-20, 2018

• Open Access   Article

  Difference squeezing of the optical fields in degenerate six-wave interaction process

  B. K. Choudhary, D. K. Giri

  Research Paper | Isroset-Journal (IJSRPAS)

  Vol.6 , Issue.2 , pp.21-29, Apr-2018

  CrossRef-DOI:   https://doi.org/10.26438/ijsrpas/v6i2.2129

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  Abstract
  We studied squeezing in the difference of the field amplitude in degenerate six wave interaction process, which is a higher-order squeezing effect. It is shown that for uncorrelated modes the normal squeezing in the difference-frequency field directly depends on the difference squeezing of input field modes. It is established that the amplitude-squared squeezing of the fundamental feeds directly into the normal squeezing of the signal mode. Detection of difference and amplitude-squared squeezing in this process is also studied. It is found that squeezing is greater in stimulated process than in spontaneous interaction.

  Key-Words / Index Term
  Squeezed States, Multiwave Mixing, Difference Squeezing, Photon Number, Amplitude-Squared Squeezing

  References
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  Citation
  B. K. Choudhary, D. K. Giri, "Difference squeezing of the optical fields in degenerate six-wave interaction process," International Journal of Scientific Research in Physics and Applied Sciences, Vol.6, Issue.2, pp.21-29, 2018

• Open Access   Article

  Analysis of Structural and Optical Features of CuO Nanoparticles Synthesized at Different Molarities

  C. Kalita, S. Karmakar

  Research Paper | Isroset-Journal (IJSRPAS)

  Vol.6 , Issue.2 , pp.30-34, Apr-2018

  CrossRef-DOI:   https://doi.org/10.26438/ijsrpas/v6i2.3034

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  Abstract
  The sol-gel method has been implemented to synthesize CuO nanoparticles at 1000C.The monoclinic phase structure of CuO nanoparticles has been confirmed by X-ray Diffraction (XRD) pattern. Crystal size and dislocation density of the nanoparticles have been estimated from XRD data. Optical band gaps have been calculated from optical absorption spectra. The chemical composition of the nanoparticles has been investigated with using fourier transform infra red (FTIR) spectroscopy. The crystal surfaces of the nanoparticles have been investigated by scanning electron microscopy (SEM).

  Key-Words / Index Term
  Nanoparticles, XRD, optical band gap, FTIR, SEM

  References
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  Citation
  C. Kalita, S. Karmakar, "Analysis of Structural and Optical Features of CuO Nanoparticles Synthesized at Different Molarities," International Journal of Scientific Research in Physics and Applied Sciences, Vol.6, Issue.2, pp.30-34, 2018

• Open Access   Article

  Octupole Correlation in Xe-Cs-Ba nuclei

  Rajesh Kumar

  Research Paper | Isroset-Journal (IJSRPAS)

  Vol.6 , Issue.2 , pp.35-42, Apr-2018

  CrossRef-DOI:   https://doi.org/10.26438/ijsrpas/v6i2.3542

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  Abstract
  The nuclei around A∼130 mass region below N = 82 shell closure are γ-soft deformed nuclei at low and intermediate spins, and exhibit various intriguing phenomena. Various possible and associated phenomena have been discussed in order to make it more lucid. Octupole correlation represents the structural behavior of the atomic nuclei at high spin which can arise when nucleons near the Fermi surface occupy states of opposite parity with orbital and total angular momentum differing by 3ħ. A nucleus with octupole deformation has reflection asymmetric shape. It has seen that the maximum octupole coupling occur just above the close shells (Z, N = 34, 56, 88 and 134). Octupole correlation is essential property in order to describe the energy of low lying collective negative parity states and E1/E3 transition strengths. Several theoretical calculations and experimental results have suggested the presence of octupole correlation in Ba, Cs and Xe isotopes. This work highlights the absence of any satisfactory conclusion for octupole correlation and reiterates the need for calculations to be performed for the better results about octupole correlation in this mass region

  Key-Words / Index Term
  γ-γ coincidence, spin-parity, fusion evaporation reaction, Electromagnetic transitions, γ-transitions and level energy

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  Citation
  Rajesh Kumar, "Octupole Correlation in Xe-Cs-Ba nuclei," International Journal of Scientific Research in Physics and Applied Sciences, Vol.6, Issue.2, pp.35-42, 2018

• Open Access   Article

  Synthesis Growth, structural, optical, SHG and characterization a new organic potential novel material Z-scan studies third order nonlinear optical material on single crystal of N-(tert-butyl)-2

  K.Elumalai Kuppan, K.Sakthiumurugesan

  Research Paper | Isroset-Journal (IJSRPAS)

  Vol.6 , Issue.2 , pp.43-51, Apr-2018

  CrossRef-DOI:   https://doi.org/10.26438/ijsrpas/v6i2.4351

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  In this work, an organic crystal, Synthesis of N-( tert-butyl)-2(2-nitrophenyl[1,2-a]Pyridin-3-amine, pdno2 single crystal were grown by slow evaporation solution growth method and the properties of the grown crystals were investigated . The formation of salt has been confirmed by single crystal X-ray diffraction and NMR Spectroscopic technique. The crystal structure was determined by single crystal x-ray diffraction analysis and it belongs to monoclinic system with the space group c1 Fourier transform infrared spectral study has been carried out to confirm the presence of various functional groups, UV-Vis-NIR study showed that the pdno2 crystal has a wide transmission window with low near-UV cut off wavelength at 231nm.The UV-Vis-NIR transmission spectrum recorded to find the optical transmittance window and lower cut off wavelength of the salt crystal. Raman spectra correlate very well with the structural data and illustrated the sub title choice of the ligands used can affect the vibrational characteristics of the Mo-o bonds vibration modes were assigned using FT-IR and FT-Raman spectra. Mass spectroscopy transmittance studies revealed that the pdn02 crystal has a wide transmission range from 250to900 nm with the lower cut 0f wavelength of 150nm. Thermal properties were investigated using TGA/DSC analyses .The thermal stability of the compound was investigated by carrying out TGA/DSC analyses simultaneously .The second harmonic generation in the crystal was confirmed by the modified Kurtz-perry powder test employing the Nd: YAG laser as the source for infrared radiation. Third order nonlinear optical properties nonlinear absorption coefficient, nonlinear refractive index and third order nonlinear susceptibility was calculated by Z-scan method using 632.8nm He-Ne laser.

  Key-Words / Index Term
  crystal structure ,FTIR, Differential Scanning Calorimeter, Thermo gravimetric Analyses, NMR, Second Harmonic Generation, Third harmonic Generation, Raman Spectroscopy. UV-Vis –NIR Spectrum, Mass spectroscopy

  References
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  Citation
  K.Elumalai Kuppan, K.Sakthiumurugesan, "Synthesis Growth, structural, optical, SHG and characterization a new organic potential novel material Z-scan studies third order nonlinear optical material on single crystal of N-(tert-butyl)-2," International Journal of Scientific Research in Physics and Applied Sciences, Vol.6, Issue.2, pp.43-51, 2018

• Open Access   Article

  Preparation, Characterization and Evaluation of Thermal Efficacy of Nano carbon–MnO2 Coated Solar Absorber

  P. Jeyasankar, R.V. Jeba Rajasekhar

  Research Paper | Isroset-Journal (IJSRPAS)

  Vol.6 , Issue.2 , pp.52-54, Apr-2018

  CrossRef-DOI:   https://doi.org/10.26438/ijsrpas/v6i2.5254

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  Abstract
  The development of nanostructured solar absorbers and their utilization in applied solar devices are the need of the hour and hence the present research. The research results revealed that nano carbon and MnO2 coated absorbers could be developed by spray coating method. The research results also revealed that the crystallite sizes in the coatings of carbon and MnO2 based absorbers were in nano ranges. The observation on research results revealed that the thermal durability and thermal efficacy of the nano carbon and MnO2 coated absorbers (in 70:30 ratio) were acceptable in connection with their utilization in the solar collectors. As the thermal durability and efficacy of nano carbon and MnO2 coated absorbers were acceptable, it could be concluded that nano carbon and MnO2 coated absorbers would be integrated in solar collectors so as to improve their thermal performances.

  Key-Words / Index Term
  Solar absorbers-Nano carbon and MnO2 based coating-Preparation-Characterization-Thermal durability-Thermal enhancement on absorbers.

  References
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  [3] K.Uma Maheswari, R.V.Jeba Rajasekhar, “Absorptive coating with nano sized carbon and aluminium oxide: preparation, characterization and estimation of thermal enhancement in solar absorber”, International Journal of Recent Scientific Research, Vol.6, Issue. 3, pp.3226-328, 2015.
  [4] T.Vasantha Malliga, R.V. Jeba Rajasekhar, “Preparation and characterization of nano graphite-and CuO-based absorber and performance evaluation of solar air-heating collector, Journal of Thermal Analysis and Calorimetry, Vol.129, pp. 233-240,2017.
  [5] Pranita Lahure, Pooja Salunke, Rupam Soliwal, Anand Yadav, Shilpa Tripathi and A.A.Koser, “X-Ray diffraction study of ZnO nanoparticles”, International Journal of Scientific Research in Physics and Applied Sciences, Vol.3, Issue.1,pp.32-33, 2015.
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  [8] P.H.Sudharlin Paul, R.V.Jeba Rajasekhar, “Preparation, SEM characterisation and proportion optimization of nano composite based cost effective solar absorber”, International Journal of Innovative Science, Engineering & Technology, Vol.2, Issue.6,pp.241-246,2015.
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  [10] P.Jeyasankar, K.Uma Maheswari, R.V.Jeba Rajasekhar, “Studies on nano-sized carbon coated fin, C/Al2O3 coated absorber and TiO2/SiO2/Ag thin film coated reflector”, In the Proceedings of the UGC sponsored national seminar on modern trends in chemistry (MTC-20),Vivekananda College, Tiruvedakam West, Madurai, India, pp.24-28,2015.
  

  Citation
  P. Jeyasankar, R.V. Jeba Rajasekhar, "Preparation, Characterization and Evaluation of Thermal Efficacy of Nano carbon–MnO2 Coated Solar Absorber," International Journal of Scientific Research in Physics and Applied Sciences, Vol.6, Issue.2, pp.52-54, 2018

• Open Access   Article

  A study on the properties Synthesis ,Growth, spectral, structural, optical thermal studies of a new organic crystal & NLO applications of N-(tert-butyl)-4-(nitrophenyl imidazo[1,2-a]pyrazin-3-amine

  K.Elumalai Kuppan, K.Sakthiumurugesan

  Research Paper | Isroset-Journal (IJSRPAS)

  Vol.6 , Issue.2 , pp.55-63, Apr-2018

  CrossRef-DOI:   https://doi.org/10.26438/ijsrpas/v6i2.5563

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  Abstract
  In this work, an organic crystal ,synthesis of N-(tert-butyl)-2-(4-nitrophenyl)imidazo[1,2-a]pyrazin-3-amine.vibration modes were assigned using FT-IR and FT-Raman spectra Raman spectra correlate very well with the structural data and illustrate the subtitle choice of the ligands, used can affect the vibrational characteristics of the Mo-o bonds Fourier Transform Infrared (FT-IR) spectral studies have been carried out, to confirm the presence of various functional group .The UV-Vis-NIR spectrum suggests the suitability of crystal for various optical application properties were investigated using the result of UV-Vis study showed that the crystal was about 50% transparent in the visible region. The grown crystal exhibits some excellent characteristics including wide optical transparency in the region (210-1100nm).ultraviolet wavelength emission .The optical transmittance of the crystal was ascertained by recording Mass spectroscopy. TGA/DSC analysis. Third order optical properties nonlinear absorption coefficient. non-linear refractive index and third order non-linear susceptibility was calculated by z-scan method using 632.8nm He-Ne laser. The thermo gravimetric Analysis (TGA) and Differential Scanning Calorimeter (DSC) were carried out to establish the thermal stability of the crystal .The 1H and C13 nuclear magnetic resonance spectra were recorded to establish the molecular structure of the crystal. The crystal structure was confirmed by Single Crystal x-ray diffraction.

  Key-Words / Index Term
  Crystal structure, FTIR, Differential Scanning calorimeter, Thermo gravimetric Analysis ,NMR, ,Third harmonic Generation, Raman Spectroscopy, UV- vis -NIR spectrum, Mass spectroscopy

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  Citation
  K.Elumalai Kuppan, K.Sakthiumurugesan, "A study on the properties Synthesis ,Growth, spectral, structural, optical thermal studies of a new organic crystal & NLO applications of N-(tert-butyl)-4-(nitrophenyl imidazo[1,2-a]pyrazin-3-amine," International Journal of Scientific Research in Physics and Applied Sciences, Vol.6, Issue.2, pp.55-63, 2018

• Open Access   Article

  Characterization of Copper(II) complexes of Schiff base derived from benzil-2,4-dinitrophenylhydrazone with anilines using x-ray diffraction and Extended X-ray absorption Fine Structure (XRD & EXAFS)

  Sushma Patidar, A. Mishra, K.S. Sura, S. Mohammad

  Research Paper | Isroset-Journal (IJSRPAS)

  Vol.6 , Issue.2 , pp.64-66, Apr-2018

  CrossRef-DOI:   https://doi.org/10.26438/ijsrpas/v6i2.6466

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  Abstract
  Schiff base chelates of Cu (II) derived from benzil-2,4-dinitro-phenylhydrazone with different anilines have been synthesized. These complexes have been prepared by chemical root method. The XRD and EXAFS characterization of the prepared complexes have been carried out. From XRD particle size and lattice parameter have been estimated and the XRD analysis revealed the crystalline nature of all complexes. These complexes have also been characterized by Cu K-Edge EXAFS measurements using the dispersive beam line at 2.5 GeV Indus-2 synchrotron radiation source at RRCAT (Raja Ramanna Centre for Advance Technology), Indore, India. The measured EXAFS data have been analyzed to compute average metal-ligand bond length using Levy’s, LSS, Lytle’s, Fourier transform methods, with the help of computer software ATHENA.

  Key-Words / Index Term
  XRD, EXAFS, Bond-length, Benzil-2,4-dinitrophenylhydrazone

  References
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  [8]. Introduction to XAFS: A Practicla guide to X-Ray Absorption Fine Structure Spectroscopy by Grant Bunker Cambridge University Press 978-0-521-76775-0 ,2010
  

  Citation
  Sushma Patidar, A. Mishra, K.S. Sura, S. Mohammad, "Characterization of Copper(II) complexes of Schiff base derived from benzil-2,4-dinitrophenylhydrazone with anilines using x-ray diffraction and Extended X-ray absorption Fine Structure (XRD & EXAFS)," International Journal of Scientific Research in Physics and Applied Sciences, Vol.6, Issue.2, pp.64-66, 2018