Correlated substitution in paramagnetic Mn2+-doped ZnO epitaxial films
Journal Article
·
· Physical Review. B, Condensed Matter and Materials Physics
Epitaxial films of Mn2+-doped ZnO were deposited by pulsed laser deposition on α-Al2O3(0001) utilizing targets created from Mn2+-doped ZnO nanoparticles. Using x-ray absorption spectroscopy and x-ray magnetic circular dichroism, Mn(II) was found to substitute for Zn in the würtzite ZnO lattice with only a paramagnetic dichroic component from the Mn, and no magnetic component from either the O or Zn. The dichroism reveals that, while substitutional, the Mn2+ distribution in the ZnO lattice is not stochastic. Rather, Mn2+ has a tendency to segregate upon substitution into regions of higher local concentration.
- Research Organization:
- Pacific Northwest National Laboratory (PNNL), Richland, WA (US), Environmental Molecular Sciences Laboratory (EMSL)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC05-76RL01830
- OSTI ID:
- 974962
- Report Number(s):
- PNNL-SA-62916; 19394; 19856; KC0203020
- Journal Information:
- Physical Review. B, Condensed Matter and Materials Physics, Journal Name: Physical Review. B, Condensed Matter and Materials Physics Journal Issue: 15 Vol. 79; ISSN 1098-0121
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
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