New Ruthenium 3d and 3p Characterization

An excellent communication in Surface and Interface Analysis from David Morgan[1] presents fitting parameter values for the Ru 3d and Ru 3p peaks for Ru metal, RuO2, RuCl3, Ru(NO)(NO3)3 and Ru(AcAc)3. Binding energies, spin-orbit splittings, asymmetries in the peak shapes and satellite structures are all characterized and presented.

Figure 1. (a) Ru 3d and (b) Ru 3p spectra for metallic ruthenium[1].

Table 2 from [1]. Experimentally determined binding energies and fit parameters for metallic Ru at 20 eV pass energy.

Figure 2. Fitted (a) Ru 3d spectra fro RuO2.xH2O and anhydrous RuO2 and (b) O 1s spectra[1].

Table 3 from [1]. Experimentally determined binding energies and fit parameters for anhydrous and hydrated RuO2 at 20 eV pass energy.

Further Notes:
Using Morgan's original data equivalent LA peakshapes are found as follows:
For the metal at 20 kV pass energy:
Ru 3d5/2 peakshape LA(1.01,1.8,11), FWHM 0.45 eV
Ru 3d3/2 peakshape LA(1.2,1.8,11), FWHM = 0.90 eV

Reference:
[1] D.J. Morgan, Surf. Interface Anal. 47 (2015) 1072-1079.

Ruthenium

Ru3d5/2 binding energy values[1].

Notes [2]:
The Ru 3d3/2 peak will overlap with C 1s.
Ru 3d5/2-3d3/2 splitting: 4.17 eV
Ru 3p3/2: 462 eVRu 3p1/2: 484 eV
Ru 3s: 586 eV
Ru 4p: 43 eV
Ru 4s: 75 eV

References:
[1] C.D. Wagner, A.V. Naumkin, A. Kraut-Vass, J.W. Allison, C.J. Powell, J.R.Jr. Rumble, NIST Standard Reference Database 20, Version 3.4 (web version) (http:/srdata.nist.gov/xps/) 2003.
[2] J.F. Moulder, W.F. Stickle, P.E. Sobol, K.D. Bomben, Handbook of X-ray Photoelectron Spectroscopy, Perkin-Elmer Corp, Eden Prairie, MN, 1992.