Published November 11, 2013 | Version v1
Journal article Metadata-only

Magnetic interaction reversal in watermelon nanostructured Cr-doped Fe nanoclusters

Creators

  • 1. Department of Physics, University of Idaho, Moscow, Idaho 83844 (United States)
  • 2. Department of Physics and Astronomy, University of Wyoming, Laramie, Wyoming 82071 (United States)
  • 3. Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, Washington 99352 (United States)
  • 4. Center for Advanced Energy Studies, Idaho Falls, Idaho 83401 (United States)
  • 5. Department of Materials Science and Engineering, Boise State University, Boise, Idaho 83725 (United States)

Description

Cr-doped core-shell Fe/Fe-oxide nanoclusters (NCs) were synthesized at varied atomic percentages of Cr from 0 at. % to 8 at. %. The low concentrations of Cr (<10 at. %) were selected in order to inhibit the complete conversion of the Fe-oxide shell to Cr2O3 and the Fe core to FeCr alloy. The magnetic interaction in Fe/Fe-oxide NCs (∼25 nm) can be controlled by antiferromagnetic Cr-dopant. We report the origin of σ-FeCr phase at very low Cr concentration (2 at. %) unlike in previous studies, and the interaction reversal from dipolar to exchange interaction in watermelon-like Cr-doped core-shell NCs

Additional details

Identifiers

DOI
10.1063/1.4830434;

Publishing Information

Journal Title
Applied Physics Letters
Journal Volume
103
Journal Issue
20
Journal Page Range
p. 202407-202407.5
ISSN
0003-6951
CODEN
APPLAB

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
45075279
Subject category
S77: NANOSCIENCE AND NANOTECHNOLOGY;
Descriptors DEI
ALLOYS; ANTIFERROMAGNETISM; CHROMIUM OXIDES; DOPED MATERIALS; EXCHANGE INTERACTIONS; NANOSTRUCTURES
Descriptors DEC
CHALCOGENIDES; CHROMIUM COMPOUNDS; INTERACTIONS; MAGNETISM; MATERIALS; OXIDES; OXYGEN COMPOUNDS; TRANSITION ELEMENT COMPOUNDS

Optional Information

Notes
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