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Title: Advantageous use of metallic cobalt in the target for pulsed laser deposition of cobalt-doped ZnO films

Abstract

We investigate the magnetic properties of ZnCoO thin films grown by pulsed laser deposition (PLD) from targets made containing metallic Co or CoO precursors instead of the usual Co{sub 3}O{sub 4}. We find that the films grown from metallic Co precursors in an oxygen rich environment contain negligible amounts of Co metal and have a large magnetization at room temperature. Structural analysis by X-ray diffraction and magneto-optical measurements indicate that the enhanced magnetism is due, in part, from Zn vacancies that partially compensate the naturally occurring n-type defects. We conclude that strongly magnetic films of Zn{sub 0.95}Co{sub 0.05}O that do not contain metallic cobalt can be grown by PLD from Co-metal-precursor targets if the films are grown in an oxygen atmosphere.

Authors:
 [1];  [2]; ; ; ;  [1];  [1];  [3];  [4]
  1. Department of Physics and Astronomy, University of Sheffield, Sheffield S3 7RH (United Kingdom)
  2. (China)
  3. (Iraq)
  4. Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439 (United States)
Publication Date:
OSTI Identifier:
22590549
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 109; Journal Issue: 7; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ATMOSPHERES; COBALT; COBALT OXIDES; DOPED MATERIALS; ENERGY BEAM DEPOSITION; LASER RADIATION; LASERS; MAGNETIC PROPERTIES; MAGNETISM; MAGNETIZATION; OXYGEN; PULSED IRRADIATION; TEMPERATURE RANGE 0273-0400 K; THIN FILMS; X-RAY DIFFRACTION; ZINC OXIDES

Citation Formats

Ying, Minju, E-mail: mjying@bnu.edu.cn, E-mail: g.gehring@sheffield.ac.uk, Key Laboratory of Beam Technology and Material Modification of Ministry of Education, College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875, Blythe, Harry J., Gerriu, Fatma M., Fox, A. Mark, Gehring, Gillian A., E-mail: mjying@bnu.edu.cn, E-mail: g.gehring@sheffield.ac.uk, Dizayee, Wala, Department of Science, Salahaddin University, Erbil, and Heald, Steve M. Advantageous use of metallic cobalt in the target for pulsed laser deposition of cobalt-doped ZnO films. United States: N. p., 2016. Web. doi:10.1063/1.4961223.
Ying, Minju, E-mail: mjying@bnu.edu.cn, E-mail: g.gehring@sheffield.ac.uk, Key Laboratory of Beam Technology and Material Modification of Ministry of Education, College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875, Blythe, Harry J., Gerriu, Fatma M., Fox, A. Mark, Gehring, Gillian A., E-mail: mjying@bnu.edu.cn, E-mail: g.gehring@sheffield.ac.uk, Dizayee, Wala, Department of Science, Salahaddin University, Erbil, & Heald, Steve M. Advantageous use of metallic cobalt in the target for pulsed laser deposition of cobalt-doped ZnO films. United States. doi:10.1063/1.4961223.
Ying, Minju, E-mail: mjying@bnu.edu.cn, E-mail: g.gehring@sheffield.ac.uk, Key Laboratory of Beam Technology and Material Modification of Ministry of Education, College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875, Blythe, Harry J., Gerriu, Fatma M., Fox, A. Mark, Gehring, Gillian A., E-mail: mjying@bnu.edu.cn, E-mail: g.gehring@sheffield.ac.uk, Dizayee, Wala, Department of Science, Salahaddin University, Erbil, and Heald, Steve M. Mon . "Advantageous use of metallic cobalt in the target for pulsed laser deposition of cobalt-doped ZnO films". United States. doi:10.1063/1.4961223.
@article{osti_22590549,
title = {Advantageous use of metallic cobalt in the target for pulsed laser deposition of cobalt-doped ZnO films},
author = {Ying, Minju, E-mail: mjying@bnu.edu.cn, E-mail: g.gehring@sheffield.ac.uk and Key Laboratory of Beam Technology and Material Modification of Ministry of Education, College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875 and Blythe, Harry J. and Gerriu, Fatma M. and Fox, A. Mark and Gehring, Gillian A., E-mail: mjying@bnu.edu.cn, E-mail: g.gehring@sheffield.ac.uk and Dizayee, Wala and Department of Science, Salahaddin University, Erbil and Heald, Steve M.},
abstractNote = {We investigate the magnetic properties of ZnCoO thin films grown by pulsed laser deposition (PLD) from targets made containing metallic Co or CoO precursors instead of the usual Co{sub 3}O{sub 4}. We find that the films grown from metallic Co precursors in an oxygen rich environment contain negligible amounts of Co metal and have a large magnetization at room temperature. Structural analysis by X-ray diffraction and magneto-optical measurements indicate that the enhanced magnetism is due, in part, from Zn vacancies that partially compensate the naturally occurring n-type defects. We conclude that strongly magnetic films of Zn{sub 0.95}Co{sub 0.05}O that do not contain metallic cobalt can be grown by PLD from Co-metal-precursor targets if the films are grown in an oxygen atmosphere.},
doi = {10.1063/1.4961223},
journal = {Applied Physics Letters},
number = 7,
volume = 109,
place = {United States},
year = {Mon Aug 15 00:00:00 EDT 2016},
month = {Mon Aug 15 00:00:00 EDT 2016}
}
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