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Nuclear magnetic resonance study of the hydrogen-mediated ferromagnetic coupling in Mn-doped ZnO
- Authors
- Park, J.K.; Lee, K.W.; Lee, C.E.
- Issue Date
- 2013
- Publisher
- Elsevier Ltd
- Keywords
- A. Mn-doped ZnO; B. Sol-gel processing; D. Hydrogen-mediated ferromagnetic coupling; E. Nuclear magnetic relaxation
- Citation
- Solid State Communications, v.166, pp.16 - 18
- Indexed
- SCIE
SCOPUS
- Journal Title
- Solid State Communications
- Volume
- 166
- Start Page
- 16
- End Page
- 18
- ISSN
- 0038-1098
- Abstract
- In our 1H nuclear magnetic resonance study of a high-concentration Mn-doped ZnO system, the Mn-ion impurity and the proton dipole-dipole relaxation contributions were well resolved. In particular, a change at 290 K in the magnetic susceptibility showing a weakening of the ferromagnetic exchange interaction was accompanied by that in the impurity relaxation mechanism and by activation of the high-temperature hopping motion of interstitial H. Thus, a unique opportunity has been provided to elucidate the role of hydrogen in the ferromagnetic coupling in the Mn-doped ZnO systems. © 2013 Elsevier Ltd. All rights reserved.
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