Magneto optical observations of flux dynamics in Nd-Ba-Cu-O bulk superconductors

被引：1
|
作者：
Zamboni, M [1 ]
Yoo, SI [1 ]
Higuchi, T [1 ]
Waki, K [1 ]
Koishikawa, S [1 ]
Murakami, M [1 ]
机构：
[1] Int Supercond Technol Ctr, Supercond Res Lab, Div 7, Minato Ku, Tokyo 105, Japan
来源：
MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY | 1998年 / 53卷 / 1-2期
关键词：
flux dynamics; Nd-Ba-Cu-O superconductors; Magneto Optical technique; anisotropy; iron-garnet films;
D O I：
10.1016/S0921-5107(97)00324-3
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The magnetic flux dynamics of Nd-Ba-Cu-O (NdBCO) bulk superconductors produced by the Oxygen-Controlled-Melt-Growth (OCMG) method has been investigated using the Magneto-Optical (M-O) technique at various low temperatures for an external magnetic field applied both parallel (H//c) and perpendicular (H perpendicular to c) to the c-axis of the sample, While for H//c the flux motion was isotropic, for H perpendicular to c anisotropic penetration and expulsion of the flux lines was observed directly. In the configuration H perpendicular to c the flux lines were observed to move in and out the sample predominantly parallel to the a-b planes. The flux behaviour has also been correlated to the microstructure. Particularly, microcracks along the basal plane were found to provide a low resistance channel for flux motion. (C) 1998 Elsevier Science S.A. All rights reserved.
引用
收藏
页码：185 / 188
页数：4
相关论文
共 50 条
  • [31] Flux creep properties in Dy-Ba-Cu-O bulk superconductors
    Enomoto, H
    Inoue, K
    Nariki, S
    Murakami, M
    Takizawa, T
    PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 2002, 378 : 513 - 516
  • [32] Control of the Nd422 second phase for the improvement of the critical current density in Nd-Ba-Cu-O superconductors
    Kojo, H
    Yoo, SI
    Sakai, N
    Murakami, M
    SUPERLATTICES AND MICROSTRUCTURES, 1997, 21 : 83 - 86
  • [33] Ac susceptibility measurements for Nd-Ba-Cu-O superconductor
    Akamatsu, Y
    Waki, K
    Inoue, K
    Murakami, M
    Takizawa, T
    SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 2000, 13 (06): : 802 - 804
  • [34] Superconducting properties of Nd-Ba-Cu-O fabricated in air
    Iida, K
    Yoshioka, J
    Murakami, M
    PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 2002, 372 (PART 2): : 1152 - 1154
  • [35] Microstructure of Nd-Ba-Cu-O superconductors prepared by the oxygen-controlled-melt-growth method
    Diko, P.
    Kojo, H.
    Murakami, M.
    Physica C: Superconductivity and its Applications, 1997, 276 (3-4): : 185 - 196
  • [36] Fabrication and microstructure of large grain Nd-Ba-Cu-O
    Babu, NH
    Lo, W
    Cardwell, DA
    Shi, YH
    SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 2000, 13 (05): : 468 - 472
  • [37] Thermodynamic study of compounds of the Nd-Ba-Cu-O system
    Zelenina L.N.
    Chusova T.P.
    Naumov V.N.
    Matskevich N.I.
    Stenin Yu.G.
    Bull. Russ. Acad. Sci. Phys., 2009, 7 (1013-1015): : 1013 - 1015
  • [38] AC susceptibility measurement for Nd-Ba-Cu-O superconductor
    Akamatsu, Y
    Waki, K
    Inoue, K
    Murakami, M
    Takizawa, T
    PHYSICA C, 2001, 357 (SUPPL. 2): : 541 - 544
  • [39] Control of the Nd422 second phase for the improvement of the critical current density in Nd-Ba-Cu-O superconductors
    Kojo, H.
    Yoo, S.I.
    Sakai, N.
    Murakami, M.
    Superlattices and Microstructures, 1997, 21 (Suppl A): : 83 - 86
  • [40] A comparison of low temperature elastic behaviour between mlet-processed Nd-Ba-Cu-O and Y-Ba-Cu-O superconductors
    Neeleshwar, S
    Muralidhar, M
    Koblischka, MR
    Reddy, PV
    Murakami, M
    ADVANCES IN SUPERCONDUCTIVITY XII, 2000, : 518 - 520
12345