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 language | English |
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Pages (from-to) | 206-208 |
Number of pages | 3 |
Journal | Current Applied Physics |
Volume | 14 |
Issue number | 2 |
DOIs | |
Publication status | Published - 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
- Materials Science(all)
- Physics and Astronomy(all)