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

doi:10.1016/j.cap.2013.11.004

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

Department of Physics

Research output: Contribution to journal › Article › peer-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 language	English
Pages (from-to)	206-208
Number of pages	3
Journal	Current Applied Physics
Volume	14
Issue number	2
DOIs	https://doi.org/10.1016/j.cap.2013.11.004
Publication status	Published - 2014 Feb

Keywords

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

ASJC Scopus subject areas

Materials Science(all)
Physics and Astronomy(all)

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title = "Hydrogen shallow donors in Co-doped ZnO showing room-temperature ferromagnetism",

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.",

keywords = "Electron paramagnetic resonance, H-induced room-temperature ferromagnetism, Sol-gel processing, ZnCoO",

author = "Park, {Jun Kue} and Lee, {Kyu Won} and Noh, {S. J.} and Kim, {H. S.} and Lee, {Cheol Eui}",

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.",

year = "2014",

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doi = "10.1016/j.cap.2013.11.004",

language = "English",

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AU - Park, Jun Kue

AU - Lee, Kyu Won

AU - Noh, S. J.

AU - Kim, H. S.

AU - Lee, Cheol Eui

N1 - 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.

PY - 2014/2

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N2 - 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.

AB - 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.

KW - Electron paramagnetic resonance

KW - H-induced room-temperature ferromagnetism

KW - Sol-gel processing

KW - ZnCoO

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