Chemical Shift of X-Ray K-Absorption Edge of Ni in Some of its Compounds and its Correlation with Partial Charge |
| V.K. Singh, A.R. Chetal Department of Applied Physics, Indian School of Mines, Dhanbad, India and P.R. Sarode Department of Physics, Goa University, Goa, India |
| Received: September 2, 1994; revised version: December 20, 1994 |
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| X-ray absorption Ni K-edge spectra are recorded for the following systems: Ni metal, Ni(NO3)2 • 6H20, Ni3(PO4)2 • 6H20, NiSO4 • 6H20, NiCO3, NiO and La2NiO4 using a Cauchois-type bent crystal spectrograph. The chemical shift of these systems is correlated with the partial charge determined using Sanderson's method. On the basis of regression analysis a relation ΔE = A0 + A1q + A2q2 -A3q3 + A4q4 between the chemical shift, ΔE, and the partial charge, q, has been suggested. The discrepancy in the shift of NiO and La2NiO4 has also been discussed. |
| DOI: 10.12693/APhysPolA.87.1003 PACS numbers: 78.70.Dm |