Hydrogen shallow donors in Co-doped ZnO showing room-temperature ferromagnetism

Jun Kue Park, Kyu Won Lee, S. J. Noh, H. S. Kim, Cheol Eui Lee

    Research output: Contribution to journalArticlepeer-review

    11 Citations (Scopus)

    Abstract

    Room-temperature ferromagnetism has been identified in sol-gel-prepared Co-doped ZnO (ZnCoO), hydrogen being incorporated by a linear polymer polyvinyl pyrrolidone. The magnetic order was investigated by the X-ray photoemission and magnetization measurements in view of the interstitial hydrogen being coupled with Co2+. The electron paramagnetic resonance measurements revealed that hydrogens not contributing to the magnetic order occupy the shallow donor levels in the hydrogenated ZnCoO system.

    Original languageEnglish
    Pages (from-to)206-208
    Number of pages3
    JournalCurrent Applied Physics
    Volume14
    Issue number2
    DOIs
    Publication statusPublished - 2014 Feb

    Bibliographical note

    Funding Information:
    This work was supported by the National Research Foundation of Korea (Nos. 2013057555, 201234779 , and NRF-2010-0027963). K.W.L. was supported by a Korea University Grant . The measurements at the Korean Basic Science Institute (KBSI) are acknowledged.

    Copyright:
    Copyright 2013 Elsevier B.V., All rights reserved.

    Keywords

    • Electron paramagnetic resonance
    • H-induced room-temperature ferromagnetism
    • Sol-gel processing
    • ZnCoO

    ASJC Scopus subject areas

    • General Materials Science
    • General Physics and Astronomy

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