A new domain structure in YBa2Cu3O7−x prepared by the quench and melt growth (QMG) process
作者： M. Kimura , M. Tanaka , H. Horiuchi , M. Morita , M. Tanaka
DOI: 10.1016/0921-4534(91)91556-J
关键词: Pole figure 、 X-ray crystallography 、 Crystal growth 、 Materials science 、 Inorganic compound 、 Crystallite 、 Crystallography 、 Diffraction 、 Superconductivity 、 High-temperature superconductivity
摘要: Abstract Crystallographic analyses have revealed a new “domain structure” in YBa 2 Cu 3 O 7− x (123) prepared by the quench and melt growth (QMG) process. The were carried out X-ray diffractometry: kind of pole figure method an improved technique microarea diffraction. is composed crystallographic units which are aligned two-dimensions; c-axes them parallel to each other there slight deviation directions their -and b -axes. degree differs scale: macrograins (∼ 10 mm), subgrains mm) crystallites 100 μm) it about few degrees scale crystallites. QMG-processed materials closely related high J c values, > 4 A/cm at 77 K under magnetic field 1 T. more strongly linked superconducting than those conventionally sintered specimens. control one most important factors for improving properties superconductors.
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S. Jin, T. H. Tiefel, R. C. Sherwood, R. B. van Dover, M. E. Davis, G. W. Kammlott, R. A. Fastnacht, Melt-textured growth of polycrystalline YBa2Cu3O7- delta with high transport Jc at 77 K. Physical Review B. ,vol. 37, pp. 7850- 7853 ,(1988) , 10.1103/PHYSREVB.37.7850
U. Welp, W. K. Kwok, G. W. Crabtree, K. G. Vandervoort, J. Z. Liu, Magnetic measurements of the upper critical field of YBa 2 Cu 3 O 7 − δ single crystals Physical Review Letters. ,vol. 62, pp. 1908- 1911 ,(1989) , 10.1103/PHYSREVLETT.62.1908
D. Dimos, P. Chaudhari, J. Mannhart, F. K. LeGoues, Orientation dependence of grain-boundary critical currents in YBa2Cu3O7- delta bicrystals Physical Review Letters. ,vol. 61, pp. 219- 222 ,(1988) , 10.1103/PHYSREVLETT.61.219
Hamid Hojaji, Aaron Barkatt, Karen A. Michael, Shouxiang Hu, Arthur N. Thorpe, Matthew F. Ware, Inna G. Talmy, Debbie A. Haught, Sidney Alterescu, Yttrium enrichment and improved magnetic properties in partially melted Y-Ba-Cu-O materials Journal of Materials Research. ,vol. 5, pp. 721- 730 ,(1990) , 10.1557/JMR.1990.0721
D. Dimos, P. Chaudhari, J. Mannhart, Superconducting transport properties of grain boundaries in YBa2Cu3O7 bicrystals. Physical Review B. ,vol. 41, pp. 4038- 4049 ,(1990) , 10.1103/PHYSREVB.41.4038
J. W. Ekin, A. I. Braginski, A. J. Panson, M. A. Janocko, D. W. Capone, N. J. Zaluzec, B. Flandermeyer, O. F. de Lima, M. Hong, J. Kwo, S. H. Liou, Evidence for weak link and anisotropy limitations on the transport critical current in bulk polycrystalline Y1Ba2Cu3Ox Journal of Applied Physics. ,vol. 62, pp. 4821- 4828 ,(1987) , 10.1063/1.338985
L. G. Schulz, A Direct Method of Determining Preferred Orientation of a Flat Reflection Sample Using a Geiger Counter X-Ray Spectrometer Journal of Applied Physics. ,vol. 20, pp. 1030- 1033 ,(1949) , 10.1063/1.1698268
Masato Murakami, Mitsuru Morita, Kenji Doi, Katsuyoshi Miyamoto, A New Process with the Promise of HighJcin Oxide Superconductors Japanese Journal of Applied Physics. ,vol. 28, pp. 1189- 1194 ,(1989) , 10.1143/JJAP.28.1189
S.H. Whang, Z.X. Li, D.X. Pang, M. Suenaga, D.O. Welch, S. Jin, T.H. Tiefel, Flux pinning effect in Y-123 superconductor containing Physica C-superconductivity and Its Applications. ,vol. 168, pp. 185- 188 ,(1990) , 10.1016/0921-4534(90)90122-U
CHARLES P. BEAN, Magnetization of High-Field Superconductors Reviews of Modern Physics. ,vol. 36, pp. 31- 39 ,(1964) , 10.1103/REVMODPHYS.36.31