Journal of Magnetics

The Korean Magnetics Society (한국자기학회)
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Ferromagnetism and p-type Conductivity in Laser-deposited (Zn,Mn)O Thin Films Codoped by Mg and P

  • Kim, Hyo-Jin (Department of Nano Information Systems Engineering, School of Nano Science and Technology, Chungnam National University) ;
  • Kim, Hyoun-Soo (Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology) ;
  • Kim, Do-Jin (Department of Nano Information Systems Engineering, School of Nano Science and Technology, Chungnam National University) ;
  • Ihm, Young-Eon (Department of Nano Information Systems Engineering, School of Nano Science and Technology, Chungnam National University) ;
  • Choo, Woong-Kil (Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology) ;
  • Hwang, Chan-Yong (Advanced Industrial Technology Group, Division of Advanced Technology, Korea Research Institute of Standards and Science)
  • Published : 2007.12.31
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Abstract

We report on the observation of p-type conductivity and ferromagnetism in diluted magnetic semiconductor $(Zn_{0.97}Mg_{0.01}Mn_{0.02})O:P$ films grown on $SiO_2/Si$ substrates by pulsed laser deposition. The p-type conduction with hole concentration over $10^{18}cm^{-3}$ is obtained by codoping of Mg and P followed by rapid thermal annealing in an $O_2$ atmosphere. Structural and compositional analyses for the p-type $(Zn_{0.97}Mg_{0.01}Mn_{0.02})O:P$ films annealed at $800^{\circ}C$ indicates that highly c-axis oriented homogeneous films were grown without any detectable formation of secondary phases. The films were found to be transparent in the visible range. The magnetic measurements clearly revealed an enhancement of room temperature ferromagnetism by p-type doping.

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