TY - JOUR
T1 - Oxygen tracer diffusion in magnesium-doped ZnO ceramics
AU - Sakaguchi, Isao
AU - Matsumoto, Kenji
AU - Ohgaki, Takeshi
AU - Adachi, Yutaka
AU - Watanabe, Ken
AU - Ohashi, Naoki
AU - Haneda, Hajime
N1 - Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.
PY - 2010/5
Y1 - 2010/5
N2 - ZnO samples added with MgO of 1.411.7mol% were used for studying oxygen diffusion by the vaporsolid exchange method. The analyses of oxygen diffusion profiles and impurities were performed by secondary-ion mass spectrometry (SIMS). The results indicate that the increase of MgO concentration enhances oxygen diffusion. The difference between the bulk-diffusion coefficients of oxygen for ZnO samples added with MgO of 1.4 and 11.7mol% was about two orders of magnitude. It was found that the grain boundary diffusion coefficients of oxygen in ZnO with 11.7mol% of MgO were larger than those in other samples, by a factor of about 10. Above results indicate that MgO addition into ZnO increases the concentration of effective defects for that promote oxygen diffusion. As the effective defects, the possibilities of vacancy and interstitial of oxygen are discussed.
AB - ZnO samples added with MgO of 1.411.7mol% were used for studying oxygen diffusion by the vaporsolid exchange method. The analyses of oxygen diffusion profiles and impurities were performed by secondary-ion mass spectrometry (SIMS). The results indicate that the increase of MgO concentration enhances oxygen diffusion. The difference between the bulk-diffusion coefficients of oxygen for ZnO samples added with MgO of 1.4 and 11.7mol% was about two orders of magnitude. It was found that the grain boundary diffusion coefficients of oxygen in ZnO with 11.7mol% of MgO were larger than those in other samples, by a factor of about 10. Above results indicate that MgO addition into ZnO increases the concentration of effective defects for that promote oxygen diffusion. As the effective defects, the possibilities of vacancy and interstitial of oxygen are discussed.
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U2 - 10.2109/jcersj2.118.362
DO - 10.2109/jcersj2.118.362
M3 - Article
AN - SCOPUS:77951970851
VL - 118
SP - 362
EP - 365
JO - Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan
JF - Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan
SN - 1882-0743
IS - 1377
ER -