NMR Observation of Mobile Protons in Proton-Implanted ZnO Nanorods
- Authors
- Park, Jun Kue; Kwon, Hyeok-Jung; Lee, Cheol Eui
- Issue Date
- 18-3월-2016
- Publisher
- NATURE PUBLISHING GROUP
- Citation
- SCIENTIFIC REPORTS, v.6
- Indexed
- SCIE
SCOPUS
- Journal Title
- SCIENTIFIC REPORTS
- Volume
- 6
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/89197
- DOI
- 10.1038/srep23378
- ISSN
- 2045-2322
- Abstract
- The diffusion properties of H+ in ZnO nanorods are investigated before and after 20 MeV proton beam irradiation by using H-1 nuclear magnetic resonance (NMR) spectroscopy. Herein, we unambiguously observe that the implanted protons occupy thermally unstable site of ZnO, giving rise to a narrow NMR line at 4.1 ppm. The activation barrier of the implanted protons was found to be 0.46 eV by means of the rotating-frame spin-lattice relaxation measurements, apparently being interstitial hydrogens. High-energy beam irradiation also leads to correlated jump diffusion of the surface hydroxyl group of multiple lines at -1 ppm, implying the presence of structural disorder at the ZnO surface.
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Collections - College of Science > Department of Physics > 1. Journal Articles
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