Electron Spin Resonance of VO 2+ in (NH 4 ) 2 SeO 4

The electron spin resonance of VO 2+ in ammonium selenate has been studied in X-band and at 298 K. The ions reside in at least two chemically distinct sites. Vanadium does not appear to enter the lattice at substitutional sites. The spin-Hamiltonian parameters have been evaluated for the two sites. The principal values of g and A and the direction cosines in which the principal axes lie along the crystallographic axes are found for the predominant vanadyl complex. The ESR results in conjunction with the optical data were used to evaluate the molecular orbital coefficients.

[1]  V. Jain.  ESR of VO2+ in NaH3(SeO3)2 , 1978 .

[2]  V. Jain.  Electron spin resonance of VO2+ in KH3(SeO3)2 , 1978 .

[3]  V. Jain,et al.  Electron spin resonance studies of VO2+ ion impurities in ferroelectric KH2PO4 , 1978 .

[4]  A. K. Viswanath.  EPR studies of VO2+ in single crystals of ZnSO4⋅7H2O and certain polycrystalline sulfates , 1977 .

[5]  A. K. Viswanath,et al.  EPR Studies of VO2+ in Single Crystals of BaCl2·2H2O and BaBr2·2H2O , 1976 .

[6]  M. Fujimoto,et al.  Internal field in ferroelectric triglycine sulphate crystals as studied by epr of V02 impuritiest , 1974 .

[7]  Wei Lin,et al.  Electron spin resonance of transition metal ions in calcium tartrate tetrahydrate. II. VO2+ as dopant , 1973 .

[8]  W. Hatfield,et al.  An EPR study of VO2+ and Cr3+ in (NH4)2SbCl5 , 1973 .

[9]  B. Chowdari.  Electron Spin Resonance Studies of VO2+in Rb2SO4Single Crystals , 1969 .

[10]  P. Venkateswarlu,et al.  Electron Paramagnetic Resonance Studies of VO2+ Doped in KAl(SO4)2·12H2O and NH4Al(SO4)2·24H2O Single Crystals , 1968 .

[11]  P. Venkateswarlu,et al.  Electron Paramagnetic Resonance Studies of VO2+ in KNO3 and CsNO3 Single Crystals , 1968 .

[12]  H. S. Gutowsky,et al.  Paramagnetic Resonance Studies of Bonding in Vanadyl and Molybdenyl Metal Complexes , 1965 .

[13]  D. Kivelson,et al.  ESR Studies and the Electronic Structure of Vanadyl Ion Complexes , 1964 .

[14]  C. Kikuchi,et al.  VO2+ and X‐Ray Produced V2+ in Tutton Salt , 1964 .

[15]  H. Gray,et al.  The Electronic Structure of the Vanadyl Ion , 1962 .

[16]  A. Tutton.  CIX.—Ammonium selenate and the question of isodimorphism in the alkali series , 2022 .