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77 IrIridium192.217

Iridium

Element Density: 22.65 g/cm3
Electron Configuration:
[Xe]4f145d76s2
Oxidation States: +3,4
Major Edges
L311215
M42116
M52040
O263
O351
Minor Edges
L113419
L212824
M13174
M22909
M32551
N1690
N2577
N3494
N4311
N5295
N663
N761
O195

Considerations

The M4,5-edge that shows both a strong cross-section and typically low background due to its high energy. To efficiently measure this edge, a large collection angle must be used. Some TEMs do not support high energy loss at short camera lengths due to cut off apertures in the column. Sudden drops in the power law background at high energy typically indicate cut off in the column.

IrO2 particle on holey C film_0-0180eV

  • Material Analyzed:
    IrO2
  • Related Elements:Iridium, Oxygen
  • Data Contributor:Gatan
  • Beam energy (keV):200
  • Nominal energy range (eV):0 - 180
  • Collection semi-angle effective (mrad):100
  • Notes:

    Serial EELS; 10 sweeps 20 ms dwell

IrO2 particle on holey C film_0-3870eV

  • Material Analyzed:
    IrO2
  • Related Elements:Iridium, Oxygen
  • Data Contributor:Gatan
  • Beam energy (keV):200
  • Nominal energy range (eV):0 - 3870
  • Collection semi-angle effective (mrad):100
  • Notes:

    Serial EELS; zero-loss peak intensity = 1.39e9; total elastic int. / zero-loss int. = 1.0; gain change factor = 712; 55 sweeps 20 ms dwell