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YBa$_2$Cu$_3$O$_{7-x}$films fabricated on IBAD templates by MOCVD process  

Jun Byung-Hyuk (한국원자력연구소 원자력재료기술개발부)
Choi Jun-Kyu (한국원자력연구소 원자력재료기술개발부)
Kim Ho-Jin (성균관대 신소재공학과 & 원자력연구소)
Kim Chan-Joong (한국원자력연구소 원자력재료기술개발부)
Publication Information
Progress in Superconductivity and Cryogenics / v.6, no.3, 2004 , pp. 21-26 More about this Journal
Abstract
Deposition condition of YBa$_2$Cu$_3$$O_{7-x}$ (YBCO) films on moving IBAD templates (CeO$_2$/IBAD-YSZ/SS) was studied in a hot-wall type metal organic chemical vapor deposition (MOCVD) process using single liquid source. The reel velocity was 40 cm/hr and the source mole ratios of Y(tmhd)$_3$:Ba(tmhd)$_2$:Cu(tmhd)$_2$ were 1:2.3:3.1 and 1:2.1:2,9, Two different types of IBAD templates with thin CeO$_2$ and thick CeO$_2$ layers were used, The YBCO films were successfully deposited at the deposition temperatures of 780~89$0^{\circ}C$ ; the a-axis growth was observed together with the c-axis growth up to 83$0^{\circ}C$. while the c-axis growth became dominant above 83$0^{\circ}C$. The top surface of the c-axis film was fairly dense and included a small amount of the a-axis growth, although the peaks of the a-axis grains were not observed in XRD pattern, The YBCO film deposited on IBAD template with thin CeO$_2$ layer showed low critical current of 2.5 A/cm-width. while the YBCO film deposited on IBAD template with thick CeO$_2$ layer showed higher critical current of 50 A/cm-width. This result indicates that thick CeO$_2$ layer is thermally more stable than thin CeO$_2$ layer at the high deposition temperature of the MOCVD process.s.
Keywords
single liquid source MOCVD; YBCO film; IBAD template; CeO$_2$ layer;
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1 K. Onabe, T. Doi. N. Kashima. S. Nagaya, T. Saitoh, 'Preparation of $YB_{a2}$$CU_3$$O_x$ superconducting tape formed on silver substrate by chemical vapor deposition technique'. Physica C. 378-381. pp. 907-910, 2002
2 M. Doudkowsky. J, Santiso. S. Berton, A. Figueras. J. Bassas. 'Barium incorporation in c-axis oriented YBCO thin films deposited by metalorganic chemical vapor deposition' Physica C. 288. pp. 1-9. 1997
3 V. Selvamanickam. H. G. Lee. Y. Li, X. Xiong, Y. Qiao, J. Reeves, Y. Xie, A. Knoll and K. Lenseth. 'Fabrication of 100 A class. 1 m long coated conductor tapes by metal organic chemical vapor deposition and pulsed laser deposition'. Physica C. 392-396 (2). pp. 859-862. 2003
4 J. Hudner, O. Thomas, E. Mossang. P. Chaudouet. F. Weiss. D. Boursier, J. P.Senateur, M. Ostling, and A. Gaskov, 'Thin-film growth and compositional effects in $YB_{a2}$$CU_3$$O_{7-x}$ layers prepared by metalorganic chemical vapor deposition". J. Appl. Phys. 74 (7). pp. 4631-4641. 1993
5 H.C. Freyhardt. J. Weismann, K. Heinemann, J.Hoffmann, J. Dzick, A. Usoskin, F. Garcia-Moreno. S. Sieves, 'YBaCuO thick films on planar and curved technical substrates'. IEEE Trans. Appl. Supercond. 7 (2). pp. 1426-1431. 1997
6 O. Stadel, J. Schmidt. G. Wahl. F. Weiss. D. Selbmann. J. Eickemeyer. O. Yu. Gorbenko. A. R. Kaul, C. Jimenez. 'Continuous YBCO deposition by MOCVD for coated conductors'. Physica C. 372-376. pp. 751-754. 2002
7 전병혁, 최준규, 김호진, 김찬중. (100) $SrTiO_3$ 단결정 기판위에 단일 액상 원료 MOCVD 법에 의한 $YB_{a2}$$CU_3$$O_{7-x}$ 박막 제조, 한국초전도 저온공학회논문지, 2004
8 Y. Q. Li, J. Zhao. C. S. Chern, P. Lu, B. Gallois. P. Norris, B. Kear and F. Cosandey, 'Effects of composition on microstructure and superconducting properties of $YB_{a2}$$CU_3$$O_{7-x}$ thin films prepared by plasma enhanced metalorganic chemical vapor deposition'. Physica C, 195, pp. 161-170, 1992
9 T. Kato, T, Araki, T. Yuasa, Y. Iijima, T. Saitoh, T. Hirayama, Y. Yamada, I.Hirabayashi, 'Microstructure of TFA-MOD superconductor film on metal tape', Physica C, 378-381, pp. 1028-1032, 2002
10 A. Goyal, D. P. Norton. J. D. Budai. M. Paranthaman. E. D. Specht, D. M. Kroeger, D. K. Christen. Q. He, B. Saffian, F. A. List, D. F. Lee. P. M. Martin, C. E. Klaubunde, E. Harfield, V. K.Sikka. 'High critical current density supercondueting tapes by epitaxial deposition of $YB_{a2}$$CU_3$$O_x$ thick films on biaxially textured metals'. Appl. Phys. Lett. 69 (12), pp.1795-1797, 1996
11 D. M. Hwang, Q. Y. Ying, H. S. Kwok, 'Interface between Y- Ba-Cu-O thin film and cubic zirconia substrate', Appl. Phys. Lett., 58 (21), pp. 2429-2431, 1991
12 Y. Iijima. N. Tanabe. O. Kohno. Y. Ikeno. 'In-plane aligned $YB_{a2}$$CU_3$$O_{7-x}$ thin films deposited on polycrystalline metallic substrates'. Appl. Phys. Lett. 60 (6). pp. 769-771. 1992
13 S. Donet. F. Weiss, J. P. Senateur. P. Chaudouet. A. Abrutis, A. Teiserskis. Z. Saltyte. D. Selbmann, J. Eickemeyer. O. Stadel. G. Wahl. C. Jimenez. U. Miller. 'YBCO films on buffered Ni RABiT substrates by pulsed injection MOCVD'. Physica C. 372-376. pp. 652-655, 2002