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Title: Electronic and magnetic properties of (1 1 1)-oriented CoCr{sub 2}O{sub 4} epitaxial thin film

We report on the fabrication of high quality (1 1 1)-oriented ferrimagnetic normal spinel CoCr{sub 2}O{sub 4} epitaxial thin films on single crystal Al{sub 2}O{sub 3} substrates. The structural, electronic, and magnetic properties were characterized by in-situ reflection high energy electron diffraction, atomic force microscopy, X-ray diffraction, X-ray photoemission spectroscopy, dc magnetization measurement, and element resolved resonant X-ray magnetic scattering. The comprehensive characterization reveals that no disorder in the cation distribution or multivalency issue is present in the samples. As a result, Kagomé and triangular layers are naturally formed via this specific growth approach. These findings offer a pathway to fabricate two dimensional Kagomé heterostructures with exotic quantum many-body phenomena by means of geometrical design.
Authors:
; ; ; ; ;  [1] ;  [2] ;  [3] ;  [4]
  1. Department of Physics, University of Arkansas, Fayetteville, Arkansas 72701 (United States)
  2. Department of Physics, University of California, Berkeley, California 94720 (United States)
  3. (United States)
  4. Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439 (United States)
Publication Date:
OSTI Identifier:
22311202
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 105; Journal Issue: 4; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ALUMINIUM OXIDES; ATOMIC FORCE MICROSCOPY; CHROMIUM COMPOUNDS; COBALT COMPOUNDS; CRYSTAL STRUCTURE; ELECTRICAL PROPERTIES; ELECTRON DIFFRACTION; EPITAXY; LAYERS; MAGNETIC PROPERTIES; MAGNETIZATION; MONOCRYSTALS; OXYGEN COMPOUNDS; PHOTOEMISSION; REFLECTION; SPECTROSCOPY; SUBSTRATES; TWO-DIMENSIONAL CALCULATIONS; X RADIATION; X-RAY DIFFRACTION