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

K. Senthil Kumaran; S. Jayakumar

doi:https://doi.org/10.14445/22315381/IJETT-V67I3P215

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Volume 67 | Issue 3 | Year 2019 | Article Id. IJETT-V67I3P215 | DOI : https://doi.org/10.14445/22315381/IJETT-V67I3P215

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

K. Senthil Kumaran, S. Jayakumar

Citation :

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 (IJETT), vol. 67, no. 3, pp. 80-84, 2019. Crossref, https://doi.org/10.14445/22315381/IJETT-V67I3P215

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

Keywords

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

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