| Grain Boundary Diffusion of Oxygen in c-Textured YBa_2Cu_3O_(7-δ)Films |
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| 作者姓名： | Li LiState Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan |
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| 作者单位： | Li LiState Key Laboratory of Advanced Technology for Materials Synthesis and Processing，Wuhan University of Technology，Wuhan 430070 |
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| 摘 要： | ＩＮＴＲＯＤＵＣＴＩＯＮＥｖｅｒｓｉｎｃｅｔｈｅｉｎｔｒｏｄｕｃｔｉｏｎｏｆｐｈｙｓｉｃａｌｖａｐｏｒｄｅｐｏｓｉｔｉｏｎｔｏｅｐｉｔａｘｉａｌｇｒｏｗｔｈｏｆｈｉｇｈｔｅｍｐｅｒａｔｕｒｅｓｕｐｅｒｃｏｎｄｕｃｔｉｎｇｃｕｐｒａｔｅｓ,ｑｕａｌｉｔｙｏｆｔｈｅｍａｔｅｒｉａｌｈａｓｂｅｅｎｇｒｅａｔｌｙｉｍｐｒｏｖｅｄ .Ａｔｐｒｅｓｅｎｔ,ｈｉｇｈ ｑｕａｌｉｔｙＹＢａ2 Ｃｕ3 Ｏ7-δ(ＹＢＣＯ)ｆｉｌｍｓｗｉｔｈＴＣ≥ 90Ｋ ,ＪＣ≥ 6× 10 6Ａ/ｃｍ2 ａｔ 77Ｋｃａｎｂｅｅａｓｉｌｙｐｒｅｐａｒｅｄｂ…
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Grain Boundary Diffusion of Oxygen in c-Textured YBa2Cu3O7-δ Films |
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| Li LiState Key Laboratory of Advanced Technology for Materials Synthesis and Processing,Wuhan University of Technology,Wuhan .Grain Boundary Diffusion of Oxygen in c-Textured YBa2Cu3O7-δ Films[J].Journal of China University of Geosciences,2001,12(3). |
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| Authors: | Li Li |
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| Abstract: | The dislocation structure in magnetron sputtered c-textured YBCO films deposited on (100)SrTiO3 substrates consists of vertical (//c axis) screw dislocation forests together with layered horizontal (|caxis) edge dislocation net-works. It is found that in the oxygenation process in YBCO films, oxygen diffusion is enhanced greatly by the short circuit paths which we suggest to be the horizontally ( c axis) layered edge dislocation net-works. Diffusion equation for oxygenation was solved with the help of Fishers theory of grain boundary diffusion, and an active energy 1.16 ev.`` |
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| Keywords: | oxygen diffusion YBa2Cu3O7 film |
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