DOI QR코드

DOI QR Code

Fabrication of YBCO films in MOD processing using F-free Y & Cu precursor solution

F-free Y & Cu 전구용액을 이용한 YBCO 박막 제조

  • Published : 2006.03.01

Abstract

A new precursor solution wilt low fluorine content was synthesized for MOD processing of coated conductors. In this study, the precursor solution for MOD processing was synthesized using F-free yttrium and copper precursor. It was shown that crack-free and uniform precursor films were formed after calcination in humidified oxygen atmosphere. Less than 2 hours were required to finish the calcination process. The relatively gradual weight loss during the calcination process is attributed to the feasibility of fast calcination profile. The calcined precursor film was converted to a YBCO film without any secondary phases after annealing in wet $Ar/O_2$ atmosphere. Fully converted film shows uniform microstructure and high critical current density. $(Jc=2.7MA/cm^2) $.

Keywords

References

  1. P. C. McIntyre, M. J. Cima and M. F.Ng, "Metalorganic deposition of high- $J_c\;YBa_2Cu_3O_{7-x}$ thin films from trifluoroacetate precursors onto (100)$SrTi0_3$". J. Appl. Phys, 64, 4183 (1990)
  2. T, Araki, K. Yamagiwa and I. Hirabayashi, "Fabrication of $YBa_2Cu_30_{7-x}$ film by metalorganic deposition method using trifluoroacetates and its process conditions", Cryogenics 41, 675 (2001) https://doi.org/10.1016/S0011-2275(01)00148-5
  3. T. Araki, I. Hirabayashi, "Review of a chemical approach to $YBa_2Cu_30_{7-x}$-coated superconductors -metalorganic deposition using trifluoroacetates" Supercond. Sci. Tech. 16, R71 (2003) https://doi.org/10.1088/0953-2048/16/1/313
  4. Y. Tokunaga, T. Honjo, T. Izumi, Y. Shiohara, Y. Iijima, T. Saitoh, T. Goto, A. Yoshinaka and A. Yajima "Advanced TFA-MOD process of high critical current YBCO films for coated conductors", Cryogenics 44, 817 (2004) https://doi.org/10.1016/j.cryogenics.2004.04.010
  5. Y. Xu, A. Goyal. K. Leonard and P. Martin. "High performance YBCO films by the hybrid of non-fluorine yttrium and copper salts with Ba TFA". Physica C. 421, 67 (2005) https://doi.org/10.1016/j.physc.2005.03.001
  6. 김영국, 유재무, 정국채, 고재웅, 김영준, 한봉수, "F-free 구리 전구용액을 이용한 YBCO 박막제조", 한국초전도저온공학회지, 7(3), 5 (2005)