Ionic Conductivity in Uniaxial Micro Strain/Stress Fields of Yttria-Stabilized Zirconia
スポンサーリンク
概要
- 論文の詳細を見る
The influence of uniaxial compressive strain/stress on the O2- ion conductivity of an yttria-stabilized zirconia (YSZ) sample was investigated by using electrochemical measurement. The conductivity was investigated by the AC four-probe method and molecular dynamics simulation. The applied compressive strain/stress ranged from 0 to 0.0003 (stress: 1.5--55 MPa) for the specimen in air at 873, 973, and 1073 K. To clarify the reason for the phenomenon of the decline in conductivity, the relaxation time for the conductivity after the application of strain/stresses was measured. The experimental result revealed that as the applied compressive strain/stress increases, the carrier concentration remains steady, whereas the mobility decreases. The conductivity was decreased with increasing compressive strain, and this trend agreed with that of the simulation results. Therefore, the decrease in mobility was considered to be the reason for the decline in conductivity under compressive strain/stress conditions.
- Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
- 2011-05-25
著者
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Mizusaki Junichiro
Institute Of Multidisciplinary Research For Advanced Materials Tohoku University
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Hashida Toshiyuki
Fracture And Reliability Res. Inst. Graduate School Of Engineering Tohoku Univ.
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Yashiro Keiji
Institute Of Multidisciplinary Research For Advanced Materials Tohoku University
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Sato Kazuhisa
Institute For Materials Research Tohoku University
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Suzuki Ken
Fracture And Reliability Research Institute Graduate School Of Engineering Tohoku University
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Yashiro Keiji
Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-88577, Japan
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Narumi Ryo
Nippon Steel Corporation, Kimitsu, Chiba 299-1141, Japan
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Mizusaki Junichiro
Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-88577, Japan
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Suzuki Ken
Fracture and Reliability Research Institute, Sendai 980-88577, Japan
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SUZUKI Ken
Fracture and Reliability Research Institute (FRRI), Graduate School of Engineering, Tohoku University
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