2012 Fiscal Year Final Research Report
Phonon Analysis on Ion Conductive Oxides Using Broadband Conductivity Spectroscopy
| Project/Area Number |
23750242
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Inorganic industrial materials
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| Research Institution | Okayama University |
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Principal Investigator |
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| Project Period (FY) |
2011 – 2012
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| Keywords | 酸化物イオン伝導体 / 広帯域導電スペクトル法 / 定化ジルコニア / バルク導電率 / 格子振動パラメータ |
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| Research Abstract |
The evaluation technique that provides a broadband conductivity spectra from low to THz frequencies for oxygen ion conductor ceramics was developed in this study. The relationship between the optical phonon behavior and the ion conductivity was quantitatively investigated by applying this technique to some oxygen ion conductors(ex. yttria-stabilized zirconia). As a result, the existence of the relation between these parameters; smaller damping factor of the optical vibration leads to higher ion conductivity, was found.
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