Photoacoustic Spectra of Heavily Co-Doped ZnO Powders
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概要
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Photoacoustic (PA) spectra were measured for heavily Co-doped ZnO powders using a microphone at room temperature. In PA spectra, the PA signal peaks of Co2+ and Co3+ can be observed with the ZnO band-gap signals. The two PA peaks related to Co ions show the Co valency change induced by the sintering, and depend on the sintering temperature and the Co concentration. For the heavily Co-doped samples, the Co valency conversion occurred at a low sintering temperature. PA spectroscopy has potential for estimating the inner ion state change during the sintering process.
- Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
- 2005-06-15
著者
-
Okamoto Masaki
Department Of Applied And Bioapplied Chemistry Graduate School Of Engineering Osaka City University
-
Kawahara Toshio
Department Of Materials Science And Engineering National Defense Academy
-
Morimoto Jun
Department Of Applied Physics National Defense Academy
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Inoue Yoshihiro
Department Of Critical Care Medicine Iwate Medical University
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