Dislocation Density and Critical Current Density of Sm_(1+x)Ba_(2-x)Cu_3O_y Films Prepared by Various Fabrication Processes

Masashi Miura; Yutaka Yoshida; Yusuke Ichino; Toshinori Ozaki; Yoshiaki Takai; Kaname Matsumoto; Ataru Ichinose; Shigeru Horii; Masashi Mukaida

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Dislocation Density and Critical Current Density of Sm_(1+x)Ba_(2-x)Cu_3O_y Films Prepared by Various Fabrication Processes

机译：通过各种制造工艺制备的Sm_（1 + x）Ba_（2-x）Cu_3O_y薄膜的位错密度和临界电流密度

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Dislocations are effective flux-pinning centers in REBa_2Cu_3O_y films at a magnetic field. To investigate the relationship between critical current density (J_c) and dislocation density, we discussed the dislocations in conventional pulsed-laser-deposition (PLD)-SmBCO films, vapor-liquid-solid (VLS)-SmBCO films, and low-temperature growth (LTG)-SmBCO films. The LTG-SmBCO and VLS-SmBCO films showed high-J_c at low magnetic fields. From the observation of etch pits, we found that the LTG-SmBCO and VLS-SmBCO films had high-dislocation densities. We speculate that J_c at low-magnetic fields is affected by dislocation density. LTG is effective for increasing dislocation density without deteriorating crystallinity or superconducting properties.

机译：位错是REBa_2Cu_3O_y膜中磁场的有效通量钉扎中心。为了研究临界电流密度（J_c）与位错密度之间的关系，我们讨论了常规脉冲激光沉积（PLD）-SmBCO膜，汽-液-固（VLS）-SmBCO膜中的位错以及低温生长（LTG）-SmBCO膜。 LTG-SmBCO和VLS-SmBCO膜在低磁场下显示高J_c。从蚀刻坑的观察，我们发现LTG-SmBCO和VLS-SmBCO膜具有高位错密度。我们推测，低磁场下的J_c受位错密度的影响。 LTG可有效地增加位错密度而不会降低结晶度或超导性能。

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来源
《Japanese Journal of Applied Physics. Part 2, Letters & Express Letters》 |2006年第28期|p.L701-L704|共4页
作者
Masashi Miura; Yutaka Yoshida; Yusuke Ichino; Toshinori Ozaki; Yoshiaki Takai; Kaname Matsumoto; Ataru Ichinose; Shigeru Horii; Masashi Mukaida;
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作者单位

Department of Electrical Engineering and Computer Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan;

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原文格式 PDF
正文语种 eng
中图分类应用物理学;
关键词
SmBa_2Cu_3O_y; dislocation; flux pinning; critical current; films;

机译：SmBa_2Cu_3O_y;位错;磁通钉扎;临界电流;薄膜;

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机译：低温生长技术制备的Sm_（1 + x）B_（2-x）Cu_3O_y厚膜在磁场作用下的临界电流增强
2. Magnetic field dependence of critical current density in Sm/sub 1+x/Ba/sub 2-x/Cu/sub 3/O/sub 6+/spl delta// films prepared by pulsed laser deposition [J] . Sudoh K., Ichino Y., Yoshida Y., IEEE Transactions on Applied Superconductivity . 2003,第2期

机译：通过脉冲激光沉积制备的Sm / sub 1 + x / Ba / sub 2-x / Cu / sub 3 / O / sub 6 + / spl delta //薄膜中临界电流密度的磁场依赖性
3. Magnetic Field Dependence of Critical Current Density and Microstructure in ${rm Sm}_{1+x}{rm Ba}_{2-x}{rm Cu}_{3}{rm O}_{y}$ Films on Metallic Substrates [J] . Miura M., Yoshida Y., Ozaki T., IEEE Transactions on Applied Superconductivity . 2007,第2期

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4. Initial Growth Mechanism of Sm_(1+x)Ba_(2-x)Cu_3O_y Film Prepared by Liquid Phase Epitaxy [C] . Akemi Hayashi, Kazuomi Kakimoto, Yuichi Ishida, International symposium on superconductivity;ISS'98 . 1999

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Dislocation Density and Critical Current Density of Sm_(1+x)Ba_(2-x)Cu_3O_y Films Prepared by Various Fabrication Processes

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