Electron Paramagnetic Resonance and Optical Study on VO(II) Ion Doped Triaquapotassiumbismalonatonickelate (TPMN)

  IJETT-book-cover  International Journal of Engineering Trends and Technology (IJETT)          
  
© 2019 by IJETT Journal
Volume-67 Issue-3
Year of Publication : 2019
Authors : K. Senthil Kumaran, S. Jayakumar
DOI :  10.14445/22315381/IJETT-V67I3P215

Citation 

MLA Style: K. Senthil Kumaran, S. Jayakumar "Electron Paramagnetic Resonance and Optical Study on VO(II) Ion Doped Triaquapotassiumbismalonatonickelate (TPMN)" International Journal of Engineering Trends and Technology 67.3 (2019): 80-84.

APA Style:K. Senthil Kumaran, S. Jayakumar (2019). Electron Paramagnetic Resonance and Optical Study on VO(II) Ion Doped Triaquapotassiumbismalonatonickelate (TPMN). International Journal of Engineering Trends and Technology, 67(3), 80-84.

Abstract
The EPR spectroscopic investigation of VO(II) ion doped in a paramagnetic host lattice, Triaquapotassiumbismalonatonickelate complex has been carried out at room temperature using X-band spectrometer to gain information about location of the impurity and bond characters. Single crystal rotated along the three orthogonal crystallographic axes has yielded spin Hamiltonian parameters g and A as: gxx = 1.979, gyy = 1.968, gzz = 1.936 and Axx = 6.92, Ayy = 6.02, Azz = 18.12 mT respectively. Single crystal EPR spectra further indicate the presence of vanadyl impurity in a single site. Angular variation studies in all the three orthogonal planes confirm that the VO(II) ion has occupied an interstitial position in the lattice. The spin Hamiltonian parameters indicate orthorhombic nature of the impurity. The analysis of powder spectrum also reveals the presence of only one site. The isofrequency plots and powder spectrum have been simulated to confirm the spin-Hamiltonian parameters. The percentage of covalency of metal-oxygen bond has been estimated. The admixture coefficients have also been calculated

Reference
[1] R.S. Alger, Electron Paramagnet Resonance: Techniques and Application, Wiley, New York, 1968.
[2] J.A. Weil, J.R. Bolton, Electron Paramagnetic Resonance, Wiley, New York, 1994.
[3] V. Somasekharm, P. Sivaprasad, K. Ramesh, Y.P. Reddy, “Electronic Spectra of VO2+ and Cu2+ Ions in Rubidium ZincSulphate Hexahydrate”, Phys. Scr., vol 33(2), pp. 169 – 172, 1986.
[4] S. Jayakumar, G.K.D. Prasanna Venkatesan, K. Senthilkumaran, J. Poongkothai “Photoluminescence of Reactive Plasma Synthesized ZrO2 Nanoparticles”, International Journal of Advance Engineering and Research Development, vol. 4(6), pp. 1-16, 2017
[5] S. Dhanuskodi, A.P. Jeyakumari, “EPR studies of VO2+ ions in kainite single crystals”, Spectrochim. Acta A, vol. 57(5), pp.971-975, 2001.
[6] S. Deepa, K. Velavan, I. Sougandi, R. Venkatesan, P.S. Rao, “Single crystal EPR study of VO(II) in magnesium potassium phosphate hexahydrate: a case of two substitutional vanadyl ion”, Spectrochim. Acta A,vol. 61(11), pp. 2482 – 2487, 2005.
[7] B. Karabulut, A. Tufan, “An EPR and optical absorption study of VO2+ ions in sodium hydrogen oxalate monohydrate (NaHC2O4·H2O) single crystals”, Spectrochim. Acta A, vol. 65(4), pp. 742 – 748, 2006.
[8] A.K. Viswanath, “EPR studies of VO2+ in single crystals of ZnSO4?7H2O and certain polycrystalline sulfates”, J. Chem. Phys.,vol. 67(8),pp. 3744 – 3757, 1977.
[9] S. Jayakumar, P.V. Ananthapadmanabhan, K. Perumal, T.K. Thiyagarajan, S.C. Mishra, G. Suresh, L.T. Su, A.I.Y. Tok, J. Guo,” Nanosize stabilization of cubic and tetragonal phases in reactive plasma synthesized zirconia powders”, Materials Chemistry and Physics. vol. 140, pp. 176 – 182, 2013.
[10] F. Clark, R.S. Dickson, O. B. Fulton, J. Isoya, A. Lent, D. G. Mc Gavin, M. J. Mombourquette, R. H. D. Nuttall, P. S. Rao, H. Rinnerberg, W.C. Tennant, J. A. Weil, EPR-NMR Program, University of Saskatchewan, Saskatoon, Canada, 1996.
[11] A. Kasiviswanath, S. Radhakrishna, “EPR and optical properties of impurity centers in low-symmetry crystals”, J. Phys. Chem. Solids, vol. 52(1), pp. 227 – 248, 1991.
[12] S. Jayakumar, K. Senthil kumaran, “Synthesis of Spherical Nano ZnO Particles by Modified Precipitation Method for Dye-Sensitized Solar Cell Applications”, International Journal of Advanced Research trends in Engineering and technology, vol.5(12,) pp. 424 – 427, 2018
[13] S.G. Sathyanarayana, V.G. Krishnan, G.S. Sastry, “Single crystal ESR of VO2+ in hexa?urea aluminium perchlorate”, J. Chem. Phys., 65(10), pp. 4181 – 4183, 1976.
[14] A.B.P. Lever, Inorganic Electronic Spectroscopy, 2nd ed, Elsevier, New York, 1986.

Keywords
Inorganic complex, vanadyl ion, crystal growth, Electron Paramagnetic Resonance