The Jahn–Teller system Ag2+: NaF, an electron paramagnetic resonance and optical absorption study

Monnier, A.; Gerber, A.; Bill, H.
May 1991
Journal of Chemical Physics;5/1/1991, Vol. 94 Issue 9, p5891
Academic Journal
The ion Ag2+ introduced into NaF shows a tetragonal electron paramagnetic resonance spectrum at 4.2 K which dynamically averages above [bar_over_tilde:_approx._equal_to]40 K. Uniaxial stress is used to show that the ground state is a strongly coupled Exε Jahn–Teller state. The well-resolved superhyperfine structure due to the F- neighbors is analyzed with a linear combination of atomic orbitals picture. Optical absorption of as-grown and treated crystals is further presented. The former ones show peaks at 202, 213, 219 nm due to Ag+. The latter ones present complex absorption spectra related to silver.


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