書誌事項
- タイトル別名
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- Orientation and Crystal Growth Mode in Sm1+xBa2-xCu3Oy Films Prepared by a Low Temperature Growth Technique
- LTGホウ オ モチイテ サクセイシタ Sm1xBa2xCu3Oy ハクマク ノ ハイコウセイ ト セイチョウ ヨウシキ
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説明
We have reported high-Jc Sm1+xBa2-xCu3Oy (SmBCO) films prepared by a low-temperature growth (LTG) technique. Despite the low-substrate temperature, the LTG-SmBCO films showed complete c-axis orientation and cube-on-cube texture. In addition, the LTG-SmBCO films showed a Jc of 0.28 MA/cm2 (77 K, B//c, B=5 T), because these included high-dislocation densities and nanosize low-Tc particles. In this study, we discuss the mechanism of c-axis orientation and crystal growth for high-Jc LTG-SmBCO films. We newly suggest a model for “Nucleated growth on c-axis oriented Seed layer (NCS)" to understand the c-axis orientation mechanism for LTG-SmBCO films. Based on the NCS model, when the LTG-SmBCO films nucleated on a seed layer have two-dimensional (2D) nuclei with a 1 unit SmBCO step cell height, the interfacial energy between the nucleus and the seed layer and the critical Gibbs free energy of the nucleus are lower than those of PLD-SmBCO films. Therefore, the LTG-SmBCO films show high crystal quality and a wide processing window for biaxial orientation. We suggest that the LTG technique is effective for not only increasing Jc in magnetic fields, but also improving the processing window and crystal quality.
収録刊行物
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- 低温工学
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低温工学 42 (2), 47-55, 2007
公益社団法人 低温工学・超電導学会 (旧 社団法人 低温工学協会)
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詳細情報 詳細情報について
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- CRID
- 1390282679591420544
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- NII論文ID
- 10018292927
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- NII書誌ID
- AN00333419
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- COI
- 1:CAS:528:DC%2BD2sXjvFSjtbc%3D
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- ISSN
- 18800408
- 03892441
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- NDL書誌ID
- 8717277
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
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- 抄録ライセンスフラグ
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