Microstructures and critical currents in high-{Tc} superconductors

作者: Masaki Suenaga

DOI:

关键词: Crystallographic defectPlane (geometry)AnisotropyMicrostructureCondensed matter physicsMagnetic fluxMaterials scienceSuperconductivityPrecipitation (chemistry)Vortex

摘要: Microstructural defects are the primary determining factors for values of critical-current densities in a high {Tc} superconductor after electronic anisotropy along a-b plane and c-direction. A review is made to assess firstly what would be maximum achievable density YBa{sub 2}Cu{sub 3}O{sub 7} if nearly ideal pinning sites were introduced secondly types currently or exist how effective these vortices.

参考文章(42)
H W Weber, Flux pinning in neutron irradiated high-Tcsingle crystals Superconductor Science and Technology. ,vol. 5, ,(1992) , 10.1088/0953-2048/5/1S/004
W. Kwok, U. Welp, G. Crabtree, K. Vandervoort, R. Hulscher, J. Liu, Direct observation of dissipative flux motion and pinning by twin boundaries in YBa 2 Cu 3 O 7-δ single crystals Physical Review Letters. ,vol. 64, pp. 966- 969 ,(1990) , 10.1103/PHYSREVLETT.64.966
J. G. Bednorz, K. A. M�ller, Possible high Tc superconductivity in the Ba-La-Cu-O system European Physical Journal B. ,vol. 64, pp. 189- 193 ,(1986) , 10.1007/BF01303701
Y. Zhu, M. Suenaga, Youwen Xu, R. L. Sabatini, A. R. Moodenbaugh, Observation of twin boundary layers in pure and alloyed YBa2Cu3O7−δ Applied Physics Letters. ,vol. 54, pp. 374- 376 ,(1989) , 10.1063/1.101349
M. Daeumling, J. M. Seuntjens, D. C. Larbalestier, Oxygen-defect flux pinning, anomalous magnetization and intra-grain granularity in YBa 2 Cu 3 0 7–δ Nature. ,vol. 346, pp. 332- 335 ,(1990) , 10.1038/346332A0
J. R. Thompson, Y. R. Sun, H. R. Kerchner, D. K. Christen, B. C. Sales, B. C. Chakoumakos, A. D. Marwick, L. Civale, J. O. Thomson, Enhanced current density Jc and extended irreversibility in single‐crystal Bi2Sr2Ca1Cu2O8 via linear defects from heavy ion irradiation Applied Physics Letters. ,vol. 60, pp. 2306- 2308 ,(1992) , 10.1063/1.107012
D. Bourgault, D. Groult, S. Bouffard, J. Provost, F. Studer, N. Nguyen, B. Raveau, M. Toulemonde, Modifications of the physical properties of the high-T/sub c/ superconductors YBa/sub 2/Cu/sub 3/O/sub 7-//sub delta/ (0. 1less than or equal todelta<0. 7) by 3. 5-GeV xenon ion bombardment Physical Review B. ,vol. 39, pp. 6549- 6554 ,(1989) , 10.1103/PHYSREVB.39.6549
L. Mechin, P. Berghuis, J. E. Evetts, A. Díaz, Evidence for Vortex Pinning by Dislocations inYBa2Cu3O7−δLow-Angle Grain Boundaries Physical Review Letters. ,vol. 80, pp. 3855- 3858 ,(1998) , 10.1103/PHYSREVLETT.80.3855
Y. Fukumoto, Y. Zhu, Q. Li, H. J. Wiesmann, M. Suenaga, T. Kaneko, K. Sato, K. Shibutani, T. Hase, S. Hayashi, Ch. Simon, Dimensionality and pinning of magnetic vortices in the c-axis aligned Bi2Sr2CaCu2O8+ delta and (Bi,Pb)2Sr2Ca2Cu3O10/Ag tapes irradiated by 5.8-GeV Pb ions. Physical Review B. ,vol. 54, pp. 10210- 10217 ,(1996) , 10.1103/PHYSREVB.54.10210
Yimei Zhu, M. Suenaga, J. Tafto, D. O. Welch, Variable nature of twin boundaries in YBa2Cu3O7- delta and its alloys. Physical Review B. ,vol. 44, pp. 2871- 2874 ,(1991) , 10.1103/PHYSREVB.44.2871