6533b833fe1ef96bd129b65a
RESEARCH PRODUCT
Detection of 4T1(P) quartet of Co2+ in Zn99.95Co0.05Se monocrystal by optical absorption spectroscopy
N.v. JoshiJorge Luengosubject
Absorption spectroscopyChemistryEnergy level splittingAnalytical chemistrychemistry.chemical_elementGeneral ChemistryCondensed Matter PhysicsIonAbsorption bandExcited stateEnergy levelGeneral Materials ScienceAtomic physicsMultipletCobaltdescription
Abstract Optical absorption spectra of Zn 99.95 Co 0.05 Se were recorded at 25 K. The thickness and the concentration of cobalt were adjusted to obtain sharp d–d ∗ transitions of Co 2+ corresponding not only to multiplets of 4 T 1 (P) but also to higher excited states. For the first time, a very weak quartet splitting of 4 T 1 (P) state was clearly observed and these states were located between 1.464 and 1.517 eV. Higher series of energy states were found to lie in the range 1.98–2.108 eV which are expected on the basis of theoretical calculations but were not detected before and they were tentatively assigned to a lower multiplet of 2G configuration of free ion. The next series of transitions, according to Fazzio et al. is expected to be at 2.5 eV. We did observe a strong absorption band, however, individual transitions were not resolved due to the close separation between them.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2003-09-01 | Journal of Physics and Chemistry of Solids |