Original Paper

Anisotropy of magnetization and magnetoresistance of (Zn,Co)O films grown by pulsed laser deposition

  1. J. W. Lee1,*,
  2. S. Kuroda1,
  3. F. Takano2,
  4. H. Akinaga2,
  5. K. Takita1

Article first published online: 18 JAN 2007

DOI: 10.1002/pssc.200672872

Issue

physica status solidi (c)

physica status solidi (c)

Volume 3, Issue 12, pages 4098–4101, January 2007

Additional Information

How to Cite

Lee, J. W., Kuroda, S., Takano, F., Akinaga, H. and Takita, K. (2006), Anisotropy of magnetization and magnetoresistance of (Zn,Co)O films grown by pulsed laser deposition. Phys. Status Solidi C, 3: 4098–4101. doi: 10.1002/pssc.200672872

Author Information

  1. 1

    Institute of Materials Science, University of Tsukuba, Tsukuba, Ibaraki 305-8573, Japan

  2. 2

    Nanotechnology Research Institute (NRI), National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Central 2, 1-1-1 Umezono, Tsukuba, Ibaraki 305-8568, Japan

*Phone: +81-29-853-5020, Fax: +81-29-853-4490

Publication History

  1. Issue published online: 18 JAN 2007
  2. Article first published online: 18 JAN 2007
  3. Manuscript Accepted: 15 NOV 2006
  4. Manuscript Revised: 10 NOV 2006
  5. Manuscript Received: 21 JUL 2006

Funded by

  • 21st Century COE (Center of Excellence) Program, “Promotion of Creative Interdisciplinary Materials Science for Novel Functions” under the Ministry of Education, Culture, Sports, Science and Technology (MEXT), Japan

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Keywords:

  • 75.30.Gw;
  • 75.47.Ak;
  • 75.60.Ej;
  • 75.70.Ak

Abstract

We report the anisotropy in magnetic and magneto-transport properties of c - and a -plane Zn1–xCoxO (x = 0.05, 0.1 and 0.15) thin films grown on c - or r -surface sapphire by PLD technique. The magnetization and magnetoresistance (MR) measurements were performed with magnetic fields parallel or perpendicular to the film plane. It was found that both the c - and a -plane films were paramagnetic down to the lowest temperature of 2K. The magnitudes of the magnetization and the positive MR were larger under magnetic fields along a - or b-axis than along c-axis for both the c - or a -plane films. These anisotropic behaviours are interpreted as intrinsic properties originating from Co2+ spins substituting the Zn site in ZnO. (© 2006 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)

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