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

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

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.

Keywords: BaZrO₃ and BaTiO₃ nanoparitcles flux pinning metalorganic deposition using trifluoroacetates

Received: 05 January 2013
Revised: 22 February 2013
Accepted manuscript online:

PACS:	74.78.-w	(Superconducting films and low-dimensional structures)
	81.15.Lm	(Liquid phase epitaxy; deposition from liquid phases (melts, solutions, And surface layers on liquids))

Fund: 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).

Corresponding Authors: Ding Fa-Zhu, Gu Hong-Wei
E-mail: dingfazhu@mail.iee.ac.cn;guhw@mail.iee.ac.cn

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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 2013 Chin. Phys. B 22 077401

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

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