Strong flux pinning enhancement in YBa2Cu3O7-x films by embedded BaZrO3 and BaTiO3 nanoparticles

doi:10.1088/1674-1056/22/7/077401

中国物理B ›› 2013, Vol. 22 ›› Issue (7): 77401-077401.doi: 10.1088/1674-1056/22/7/077401

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇下一篇

Strong flux pinning enhancement in YBa₂Cu₃O_7-x films by embedded BaZrO₃ and BaTiO₃ nanoparticles

丁发柱, 古宏伟, 张腾, 王洪艳, 屈飞, 邱清泉, 戴少涛, 彭星煜

Key Laboratory of Applied Superconductivity, Chinese Academy of Sciences, Beijing 100190, China; Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing 100190, China

收稿日期:2013-01-05 修回日期:2013-02-22 出版日期:2013-06-01 发布日期:2013-06-01
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. 51002149 and 51272250) and the National Basic Research Program of China (Grant No. 2011CBA00105).

Strong flux pinning enhancement in YBa₂Cu₃O_7-x films by embedded BaZrO₃ and BaTiO₃ nanoparticles

Ding Fa-Zhu (丁发柱), Gu Hong-Wei (古宏伟), Zhang Teng (张腾), Wang Hong-Yan (王洪艳), Qu Fei (屈飞), Qiu Qing-Quan (邱清泉), Dai Shao-Tao (戴少涛), Peng Xing-Yu (彭星煜)

Key Laboratory of Applied Superconductivity, Chinese Academy of Sciences, Beijing 100190, China; Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing 100190, China

Received:2013-01-05 Revised:2013-02-22 Online:2013-06-01 Published:2013-06-01
Contact: Ding Fa-Zhu, Gu Hong-Wei E-mail:dingfazhu@mail.iee.ac.cn;guhw@mail.iee.ac.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 51002149 and 51272250) and the National Basic Research Program of China (Grant No. 2011CBA00105).

摘要/Abstract

摘要： YBa₂Cu₃O_7-x (YBCO) films with embedded BaZrO₃ and BaTiO₃ nanoparitcles were fabricated by metalorganic deposition using trifluoroacetates (TFA-MOD). Both X-ray diffraction and transmission electron microscopy revealed that these BaZrO₃ and BaTiO₃ nanoparitcles had random orientations and were distributed stochastically in the YBCO matrix. The unique combined microstructure enhanced the critical current density (J_c) of the BaZrO₃/BaTiO₃ doped-YBCO films while keeping the critical transition temperature (T_c) close to that in the pure YBCO films. These results indicated that the BaZrO₃ and BaTiO₃ nanoparitcles provide strong flux pinning in YBCO films.

关键词: BaZrO₃ and BaTiO₃ nanoparitcles, flux pinning, metalorganic deposition using trifluoroacetates

Abstract: YBa₂Cu₃O_7-x (YBCO) films with embedded BaZrO₃ and BaTiO₃ nanoparitcles were fabricated by metalorganic deposition using trifluoroacetates (TFA-MOD). Both X-ray diffraction and transmission electron microscopy revealed that these BaZrO₃ and BaTiO₃ nanoparitcles had random orientations and were distributed stochastically in the YBCO matrix. The unique combined microstructure enhanced the critical current density (J_c) of the BaZrO₃/BaTiO₃ doped-YBCO films while keeping the critical transition temperature (T_c) close to that in the pure YBCO films. These results indicated that the BaZrO₃ and BaTiO₃ nanoparitcles provide strong flux pinning in YBCO films.

Key words: BaZrO₃ and BaTiO₃ nanoparitcles, flux pinning, metalorganic deposition using trifluoroacetates

中图分类号: (Superconducting films and low-dimensional structures)

74.78.-w

81.15.Lm (Liquid phase epitaxy; deposition from liquid phases (melts, solutions, And surface layers on liquids))

丁发柱, 古宏伟, 张腾, 王洪艳, 屈飞, 邱清泉, 戴少涛, 彭星煜. Strong flux pinning enhancement in YBa₂Cu₃O_7-x films by embedded BaZrO₃ and BaTiO₃ nanoparticles[J]. 中国物理B, 2013, 22(7): 77401-077401.

Ding Fa-Zhu (丁发柱), Gu Hong-Wei (古宏伟), Zhang Teng (张腾), Wang Hong-Yan (王洪艳), Qu Fei (屈飞), Qiu Qing-Quan (邱清泉), Dai Shao-Tao (戴少涛), Peng Xing-Yu (彭星煜). Strong flux pinning enhancement in YBa₂Cu₃O_7-x films by embedded BaZrO₃ and BaTiO₃ nanoparticles[J]. Chin. Phys. B, 2013, 22(7): 77401-077401.

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Strong flux pinning enhancement in YBa₂Cu₃O_7-x films by embedded BaZrO₃ and BaTiO₃ nanoparticles

Strong flux pinning enhancement in YBa₂Cu₃O_7-x films by embedded BaZrO₃ and BaTiO₃ nanoparticles

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