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Electric field gradient at 12 N implanted into ZnO |
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| Authors: | R Matsumiya M Mihara M Ogura K Matsuta M Fukuda T Izumikawa T Minamisono |
| Institution: | 1. Graduate School of Science, Osaka University, 1-1, Machikaneyama, Toyonaka, Osaka, 560-0043, Japan 2. Graduate School of Science, Osaka University, Toyonaka, Osaka, 560-0043, Japan 3. Radioisotope Center, Niigata University, Niigata, 951-8510, Japan 4. Fukui University of Technology, Fukui, 910-8505, Japan |
| Abstract: | The nuclear quadrupole interaction of short-lived β-emitter 12N(I?=?1, T 1/2?=?11 ms) implanted into a ZnO single crystal has been studied by means of the β-NMR method. We have observed a quadrupole splitting of 12N in ZnO at room temperature, from which the electric field gradient (EFG) q?=?+?(8.6 ±1.1) ×1019 V/m2 was deduced assuming axially symmetric EFG with respect to the crystalline c axis. A first principle calculation does not reproduce the data under assumption of the lattice location of 12N at the oxygen substitutional site. |
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