CeO{sub 2} compatibility with YBa{sub 2}Cu{sub 3}O{sub 7{minus}{delta}} in superconducting-film multilayers
作者： Yu. A. Boikov , T. Claeson , D. Erts , F. Bridges , Z. Kvitky
DOI: 10.1103/PHYSREVB.56.11312
关键词: Epitaxy 、 Thin film 、 Condensed matter physics 、 Diffraction 、 Valence (chemistry) 、 Superconductivity 、 X-ray crystallography 、 Crystallography 、 Crystal structure 、 Materials science 、 Transition temperature
摘要: High-quality superconducting (T{sub c}{approx}90K, j{sub c}{gt}10{sup 6}A/cm{sup 2} at 77 K) epitaxial (001) YBa{sub 2}Cu{sub 3}O{sub 7{minus}{delta}} films were grown by laser ablation on CeO{sub 2}/(11{underscore}02) Al{sub 2}O{sub 3}. An interaction between and would influence the structure parameters. A marked degradation of transition temperature c}=74K) was observed when twenty 2-nm-thick layers inserted equidistantly into a film (200 nm). BaCeO{sub 3} crystalline inclusions detected x-ray diffraction. X-ray-absorption fine-structure investigations Cu-K edge indicate that Ce substitutes for Y in 7{minus}{delta}}. Near-edge x-ray-absorption studies valence incorporated regions multilayer is also +4. {copyright} {ital 1997} The American Physical Society}
harvard.edu
sci-hub.se 参考文章(21)
X. D. Wu, R. C. Dye, R. E. Muenchausen, S. R. Foltyn, M. Maley, A. D. Rollett, A. R. Garcia, N. S. Nogar, Epitaxial CeO2films as buffer layers for high‐temperature superconducting thin films Applied Physics Letters. ,vol. 58, pp. 2165- 2167 ,(1991) , 10.1063/1.104994
W. L. Holstein, L. A. Parisi, D. W. Face, X. D. Wu, S. R. Foltyn, R. E. Muenchausen, Superconducting epitaxial Tl2Ba2CaCu2O8 films on sapphire with cerium oxide buffer layers Applied Physics Letters. ,vol. 61, pp. 982- 984 ,(1992) , 10.1063/1.107722
M. W. Denhoff, J. P. McCaffrey, Epitaxial Y1Ba2Cu3O7 thin films on CeO2 buffer layers on sapphire substrates Journal of Applied Physics. ,vol. 70, pp. 3986- 3988 ,(1991) , 10.1063/1.349166
A.L. Vasiliev, G. Van Tendeloo, A. Amelinckx, Yu. Boikov, E. Olsson, Z. Ivanov, Structural aspect of YBa2Cu3O7−x films on Si with complex barrier layers Physica C: Superconductivity. ,vol. 244, pp. 373- 388 ,(1995) , 10.1016/0921-4534(95)00080-1
G.L. Skofronick, A.H. Carim, S.R. Foltyn, R.E. Muenchausen, Interfacial reaction products and film orientation in YBa 2 Cu 3 O 7− x on zirconia substrates with and without CeO 2 buffer layers Journal of Materials Research. ,vol. 8, pp. 2785- 2798 ,(1993) , 10.1557/JMR.1993.2785
L. P. Lee, K. Char, M. S. Colclough, G. Zaharchuk, Monolithic 77 K dc SQUID magnetometer Applied Physics Letters. ,vol. 59, pp. 3051- 3053 ,(1991) , 10.1063/1.105790
Yu. A. Boikov, Z. G. Ivanov, A. L. Vasiliev, T. Claeson, Biepitaxial Josephson junctions with high critical current density based on YBa2Cu3O7−δ films on silicon on sapphire Journal of Applied Physics. ,vol. 77, pp. 1654- 1657 ,(1995) , 10.1063/1.358922
Chan Joong Kim, Ki Baik Kim, Sang Chul Kwon, In Soon Chang, Dong Yeon Won, Phase transition induced by addition of CeO 2 in Y 1.2 Ba 2.1 Cu 3.1 O y superconductor Journal of Materials Science Letters. ,vol. 11, pp. 346- 348 ,(1992) , 10.1007/BF00729178
E. V. Sampathkumaran, Atsushi Suzuki, Kay Kohn, Takashi Shibuya, Ayako Tohdake, Masayasu Ishikawa, Absence of Solid Solution of the Type, Y(Ba2-xREx)Cu3O7±δand Its Possible Implications Japanese Journal of Applied Physics. ,vol. 27, pp. L584- L586 ,(1988) , 10.1143/JJAP.27.L584
P. Sladeczek, U. Neukirch, C.T. Simmons, O. Strebel, C. Laubschat, D.D. Sarma, G. Kaindl, Tc suppression and rare-earth valency in Y1−xMxBa2Cu3O7−δ (M = Ce, Pr, Tb) Physica C: Superconductivity. ,vol. 153-155, pp. 916- 917 ,(1988) , 10.1016/S0921-4534(88)80153-9