Published April 15, 2009 | Version v1
Journal article Metadata-only

Correlated substitution in paramagnetic Mn2+-doped ZnO epitaxial films

Creators

  • 1. Fundamental and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, Washington 99352 (United States)
  • 2. Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439 (United States)
  • 3. Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, Washington 99352 (United States)
  • 4. Department of Chemistry, University of Washington, Seattle, Washington 98195 (United States)

Description

Epitaxial films of Mn2+-doped ZnO were deposited by pulsed laser deposition on α-Al2O3(0001) using 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(II) in the wuertzite 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 substitute with higher effective local concentrations than anticipated from a stochastic doping model.

Additional details

Identifiers

DOI
10.1103/PhysRevB.79.155203;

Publishing Information

Journal Title
Physical Review. B, Condensed Matter and Materials Physics
Journal Volume
79
Journal Issue
15
Journal Page Range
p. 155203-155203.9
ISSN
1098-0121

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
41052597
Subject category
S36: MATERIALS SCIENCE; S77: NANOSCIENCE AND NANOTECHNOLOGY;
Descriptors DEI
ABSORPTION SPECTROSCOPY; ALUMINIUM OXIDES; DOPED MATERIALS; ENERGY BEAM DEPOSITION; EPITAXY; FILMS; LASER RADIATION; LAYERS; MAGNETIC CIRCULAR DICHROISM; MAGNETIC MOMENTS; MANGANESE; MANGANESE ADDITIONS; MANGANESE IONS; NANOSTRUCTURES; PARAMAGNETISM; PULSED IRRADIATION; SAPPHIRE; SEMICONDUCTOR MATERIALS; SIMULATION; STOCHASTIC PROCESSES; X RADIATION; X-RAY SPECTROSCOPY; ZINC OXIDES
Descriptors DEC
ALLOYS; ALUMINIUM COMPOUNDS; CHALCOGENIDES; CHARGED PARTICLES; CORUNDUM; CRYSTAL GROWTH METHODS; DEPOSITION; DICHROISM; ELECTROMAGNETIC RADIATION; ELEMENTS; IONIZING RADIATIONS; IONS; IRRADIATION; MAGNETISM; MANGANESE ALLOYS; MATERIALS; METALS; MINERALS; OXIDE MINERALS; OXIDES; OXYGEN COMPOUNDS; RADIATIONS; SPECTROSCOPY; SURFACE COATING; TRANSITION ELEMENT ALLOYS; TRANSITION ELEMENTS; ZINC COMPOUNDS

Optional Information

Notes
(c) 2009 The American Physical Society