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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