Formation and Characterization of (Zn1-xMnx)O Diluted Magnetic Semiconductors Grown on (0001) Al2O3 Substrates

Doo Soo Kim, Sejoon Lee, Cheonki Min, Hwa Mok Kim, Sh U. Yuldashev, Tae Won Kang, Deuk Young Kim, Tae Whan Kim

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19 Scopus citations

Abstract

(Zn1-xMnx)O diluted magnetic semiconductors (DMSs) grown on (0001) Al2O3 substrates by radio frequency magnetron sputtering were investigated with the aim of producing a material with a high ferromagnetic transition temperature (Tc). X-ray diffraction, photoluminescence, and Hall-effect measurements showed that the grown (Zn1-xMnx)O thin films were p-type crystalline semiconductors with single phases. Magnetization curve as a function of magnetic field at 5K indicated that ferromagnetism existed in the (Zn 1-xMnx)O thin films, and magnetization curve as a function of temperature showed that the Tc of the (Zn 0.93Mn30.07)O thin film was 70K. These observations can improve the understanding of the increase in Tc for (Zn 1-xMnxO DMSs grown on (0001) Al2O3 substrates.

Original languageEnglish
Pages (from-to)7217-7220
Number of pages4
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume42
Issue number12
DOIs
StatePublished - Dec 2003

Keywords

  • (ZnMn)O
  • Diluted magnetic semiconductors
  • Ferromagnetic transition temperature
  • Ferromagnetism
  • Magnetron sputtering

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