TY - JOUR
T1 - High critical current YBCO thick films by TFA-MOD process
AU - Tokunaga, Yoshitaka
AU - Fuji, Hiroshi
AU - Teranishi, Ryo
AU - Shibata, Junko
AU - Asada, Sigenobu
AU - Honjo, Tetsuji
AU - Izumi, Teruo
AU - Shiohara, Yuh
AU - Iijima, Yasuhiro
AU - Saitoh, Takashi
N1 - Funding Information:
This work was supported by the New Energy and Industrial Technology Development Organization (NEDO) as Collaborative Research and Development of Fundamental Technologies for Superconductivity Applications.
PY - 2003/10
Y1 - 2003/10
N2 - As a method of the fabrication processes of YBa2Cu 3O7-x (YBCO), the metalorganic deposition (MOD) process using metal trifluoroacetete (TFA) is considered to be a strong candidate due to its low cost fabrication process for coated conductors with high J c. In our previous work, a triple coated film with 1 μm in thickness was fabricated on a CeO2/IBAD-YSZ layer buffered Hastelloy substrate by optimizing the condition of heat treatments such as P H2O in the multi-coating method [Physica C 378-381 (2002) 1013]. The Jc value of 1.6 MA/cm2 (77 K in self-field) in this film patterned 100 μm width and the I*c value of 153 A/cm-width at 77 K in self-field were achieved. In order to obtain a thicker film with high overall I*c for 1 cm width, the influence of the heat treatment conditions of PH2O, PO2, and the temperature in the MOD process was investigated. Subsequently, a 5 times coated film was obtained on a CeO2/IBAD-Zr2Gd2O7 layer buffered Hastelloy substrate by optimizing the conditions of heating and dip coating. As a result, the overall transport Ic value was improved to 210 A and Jc value of 1.53 MA/cm2 was obtained (77 K in self-field).
AB - As a method of the fabrication processes of YBa2Cu 3O7-x (YBCO), the metalorganic deposition (MOD) process using metal trifluoroacetete (TFA) is considered to be a strong candidate due to its low cost fabrication process for coated conductors with high J c. In our previous work, a triple coated film with 1 μm in thickness was fabricated on a CeO2/IBAD-YSZ layer buffered Hastelloy substrate by optimizing the condition of heat treatments such as P H2O in the multi-coating method [Physica C 378-381 (2002) 1013]. The Jc value of 1.6 MA/cm2 (77 K in self-field) in this film patterned 100 μm width and the I*c value of 153 A/cm-width at 77 K in self-field were achieved. In order to obtain a thicker film with high overall I*c for 1 cm width, the influence of the heat treatment conditions of PH2O, PO2, and the temperature in the MOD process was investigated. Subsequently, a 5 times coated film was obtained on a CeO2/IBAD-Zr2Gd2O7 layer buffered Hastelloy substrate by optimizing the conditions of heating and dip coating. As a result, the overall transport Ic value was improved to 210 A and Jc value of 1.53 MA/cm2 was obtained (77 K in self-field).
UR - http://www.scopus.com/inward/record.url?scp=0042785177&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0042785177&partnerID=8YFLogxK
U2 - 10.1016/S0921-4534(03)01150-X
DO - 10.1016/S0921-4534(03)01150-X
M3 - Conference article
AN - SCOPUS:0042785177
SN - 0921-4534
VL - 392-396
SP - 909
EP - 912
JO - Physica C: Superconductivity and its applications
JF - Physica C: Superconductivity and its applications
IS - PART 2
T2 - Proceedings of the 15th International Symposium on Superconduc
Y2 - 11 November 2002 through 13 November 2002
ER -