Multilevel granular structure and its coupling distribution in melt-textured YBa2Cu3O7-δ

被引：15
作者：
Araújo-Moreira, FM
Ortiz, WA
de Lima, OF [1 ]
机构：
[1] Univ Estadual Campinas, Inst Fis Gleb Wataghin, BR-13083970 Campinas, SP, Brazil
[2] Univ Fed Sao Carlos, Dept Fis, Grp Supercondut & Magnetismo, BR-13565905 Sao Carlos, SP, Brazil
来源：
PHYSICA C | 1999年 / 311卷 / 1-2期
基金：
巴西圣保罗研究基金会;
关键词：
AC susceptibility; critical current density; granular superconductivity; couplings distribution;
D O I：
10.1016/S0921-4534(98)00618-2
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We have performed AC magnetic susceptibility measurements as a function of the excitation magnetic field, h, for two YBa2Cu3O7-delta polycrystalline samples using a high-sensitivity home-made susceptometer, for fixed values of the temperature, T, and the external DC magnetic field, H, One of the samples is melt-textured and for H < 52.5 Oe it presents features that can be associated with a multilevel granular structure. Using an effective medium model, we have determined the critical current density distribution associated with the multilevel granular structure. The average critical current density in each intergranular region was then calculated by applying Bean's critical state model. (C) 1999 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：98 / 106
页数：9
相关论文
共 50 条
[41]   Transport Properties of YBa2Cu3O7-δ Thin Films Near the Critical State [J].
Bernstein, Pierre ;
Hamet, Jean-Francois ;
Thimont, Yohann .
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, 2009, 19 (03) :3541-3544
[42]   Enhanced Critical Current Density of FeF2 Added YBa2Cu3O7-δ [J].
Abd-Shukor, R. ;
Kong, I. ;
Lim, E. L. ;
Mizan, N. A. ;
Alwi, H. A. ;
Jumali, M. H. ;
Kong, W. .
JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM, 2012, 25 (04) :957-960
[43]   The effect of strain on grains and grain boundaries in YBa2Cu3O7-δ coated conductors [J].
van der Laan, D. C. ;
Haugan, T. J. ;
Barnes, P. N. ;
Abraimov, D. ;
Kametani, F. ;
Larbalestier, D. C. ;
Rupich, M. W. .
SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 2010, 23 (01)
[44]   YBa2Cu3O7-δ tapes synthesised on untextured silver substrates by an electrodeposition process [J].
Bifulco-Michon, C ;
Legendre, F ;
Poissonnet, S ;
Régnier, P ;
Giunchi, G .
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 2002, 372 :729-732
[45]   Effects of Yb-doping on flux pinning properties in YBa2Cu3O7-δ [J].
Xu Sheng ;
Gu Yangni ;
Wu Xiaoshan .
JOURNAL OF RARE EARTHS, 2010, 28 :431-433
[46]   Effect of zirconium diffusion on the microstructural and superconducting properties of YBa2Cu3O7-δ superconductors [J].
Guner, S. B. ;
Gorur, O. ;
Celik, S. ;
Dogruer, M. ;
Yildirim, G. ;
Varilci, A. ;
Terzioglu, C. .
JOURNAL OF ALLOYS AND COMPOUNDS, 2012, 540 :260-266
[47]   Effect of nanometer Al2O3 addition on structural and transport properties of YBa2Cu3O7-δ [J].
Mellekh, A. ;
Zouaoui, M. ;
Azzouz, F. Ben ;
Annabi, M. ;
Salem, M. Ben .
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 2007, 460 (426-427) :426-427
[48]   Characterization of the superconductor-multiferroic type materials based on YBa2Cu3O7-δ-YMnO3 composites [J].
Peczkowski, Pawel ;
Zachariasz, Piotr ;
Kowalik, Marcin ;
Zalecki, Ryszard ;
Jastrzebski, Cezariusz .
CERAMICS INTERNATIONAL, 2019, 45 (15) :18189-18204
[49]   Pinning potential in thick PrBa2Cu3Ox/YBa2Cu3O7-δ quasi-multilayers [J].
Crisan, A. ;
Dang, V. S. ;
Mikheenko, P. ;
Tse, Y. Y. ;
Sarkar, A. ;
Bowen, J. ;
Abell, J. S. .
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 2010, 470 (01) :55-60
[50]   Impact of carbon nanotubes addition on transport and superconducting properties of YBa2Cu3O7-δ ceramics [J].
Khalid, Nurul Auni ;
Kechik, Mohd Mustafa Awang ;
Baharuddin, Nur Atikah ;
Kien, Chen Soo ;
Baqiah, Hussein ;
Yusuf, Nur Nabilah Mohd ;
Shaari, Abdul Halim ;
Hashim, Azhan ;
Talib, Zainal Abidin .
CERAMICS INTERNATIONAL, 2018, 44 (08) :9568-9573
12345