Effects of Bi<sub>2</sub>O<sub>3</sub> Impurities in Ceramic ZnO on Photoacoustic Spectra and Current-Voltage Characteristics
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- Toyoda Taro
- Department of Applied Physics and Chemistry, The University of Electro–Communications, 1–5–1 Chofugaoka, Chofu, Tokyo 182–8585, Japan
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- Shimamoto Satoshi
- Department of Applied Physics and Chemistry, The University of Electro–Communications, 1–5–1 Chofugaoka, Chofu, Tokyo 182–8585, Japan
書誌事項
- タイトル別名
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- Effects of Bi2O3 Impurities in Ceramic ZnO on Photoacoustic Spectra and Current-Voltage Characteristics.
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抄録
Photoacoustic (PA) spectroscopy is applied to study the optical absorption of ceramic ZnO doped with 1 mol% Bi2O3 sintered at various temperatures (700-1100°C). PA signal intensities plotted semilogarithmically reveal two individual regions below 3.0 eV (A: 3.0-2.7 eV; B: 2.6-2.4 eV). The steepness factor (slope of exponential optical absorption) obtained at region A decreases as the sintering temperature increases, indicating an increase of Bi2O3 segregation at particle surfaces and grain boundaries which might contribute to the interface states. The steepness factor at region B increases rapidly as the sintering temperature increases, indicating an occurrence of structural ordering by the Bi2O3 liquid phase sintering effect. The varistor effect (highly nonohmic behavior in the current-voltage characteristics) of ceramic ZnO doped with 1 mol% Bi2O3 is correlated with the characterization obtained by the PA method.
収録刊行物
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- Japanese Journal of Applied Physics
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Japanese Journal of Applied Physics 37 (5B), 2827-2831, 1998
The Japan Society of Applied Physics
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詳細情報 詳細情報について
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- CRID
- 1390001206248220928
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- NII論文ID
- 110003947366
- 210000043157
- 130004525122
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- NII書誌ID
- AA10457675
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- ISSN
- 13474065
- 00214922
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- NDL書誌ID
- 4640277
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可