The possibility of negative substitution (x) in melt-processed Gd1+xBa2-xCu3O7-δGdBCO bulk superconductors

被引：3

作者：

Shi, Y. ^{[1
]}

Babu, N. H. ^{[2
]}

Iida, K. ^{[1
]}

Cardwell, D. A. ^{[1
]}

机构：

[1] Univ Cambridge, Dept Engn, Irc Superconduct, Cambridge CB2 1PZ, England

[2] Brunel Univ, BCAST, Uxbridge UB8 3PH, Middx, England

来源：

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2008年 / 468卷 / 15-20期

基金：

英国工程与自然科学研究理事会;

关键词：

Gd-163; solid solution; Gd1+xBa2-xCu3O7-delta; negative x; EPMA;

D O I：

10.1016/j.physc.2008.05.126

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have reported previously the successful fabrication of single grain Gd-Ba-Cu-O (GdBCO) bulk superconductors in air by top seeded melt growth (TSMG) using a generic Mg-Nd-Ba-Cu-O (Mg-NdBCO) seed crystal. Here, we report a new processing route that enables the fabrication of bulk GdBCO single grains in air using precursors with higher Ba content than has been achieved in previous studies. In particular, the composition of the superconducting matrix of single grains prepared with high, but varying, levels of Ba is analyzed by EPMA. The degree of substitution Ba for Gd (corresponding to a negative value of x in the composition formulation), in GdBCO is proposed for the first time based on the superconducting, compositional, chemical and structural properties of the Gd-123ss (Gd1+xBa2-xCU3O7-delta) phase matrix observed this study. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：1408 / 1410

页数：3

共 50 条

[1] Trapped Field Performance of the Gd1+xBa2-xCu3O7-δ Bulk Superconductors Fabricated by Cooling-Rate-Control-Melt-Growth
Matsuumi, R.
Izumi, M.
Yao, X.
29TH INTERNATIONAL SYMPOSIUM ON SUPERCONDUCTIVITY, 2017, 871
[2] Superconductivity through percolation in Gd1+xBa2-xCu3O7-δ
Chatterjee, Ratnamada, 1600, (158):
[3] Effects of Gd/Ba Nonstoichiometry in Gd1+xBa2-xCu3O7-δ on Superconducting and Magnetic Properties
Majerova, M.
Cigan, A.
Bystricky, R.
Manka, J.
Dvurecenskij, A.
Skratek, M.
ACTA PHYSICA POLONICA A, 2014, 126 (01) : 354 - 355
[4] Crystal structure and magnetic properties of melt-processed Sm1+2xBa2+xCu3+xOy superconductors
Kohayashi, S
Nagaya, S
PHYSICA C, 2001, 357 (SUPPL. 2): : 789 - 791
[5] Effect of element substitution on the superconducting properties of Gd-based melt-processed bulk-superconductors
Oda, M.
Ikuta, H.
8TH EUROPEAN CONFERENCE ON APPLIED SUPERCONDUCTIVITY (EUCAS'07), 2008, 97
[6] MICROSTRUCTURE WITHIN DOMAINS OF MELT-PROCESSED YBA2CU3O7-X SUPERCONDUCTORS
ALEXANDER, KB
GOYAL, A
KROEGER, DM
SELVAMANICKAM, V
SALAMA, K
PHYSICAL REVIEW B, 1992, 45 (10): : 5622 - 5627
[7] High rate melt texturing of Nd1-xBa2+xCu3O7-delta type superconductors
Salama, K
Parikh, AS
Woolf, L
APPLIED PHYSICS LETTERS, 1996, 68 (14) : 1993 - 1995
[8] Heat treatment of Nd1+xBa2-xCu3O7-δ superconductors
Fan, ZG
Si, PZ
Soh, DW
JOURNAL OF RARE EARTHS, 2003, 21 (02) : 198 - 200
[9] Heat Treatment of Nd1+xBa2-xCu3O7-δ Superconductors
樊占国
司平占
苏大和
Journal of Rare Earths, 2003, (02) : 198 - 200
[10] Solubility and superconductivity of Gd1+xBa2-xCu3O7-δ compounds (x =-0. 1, 0, 0. 05, 0.1, 0.15 and 0. 2)
Xu, CX
Hu, AM
Sakai, N
Izumi, M
Hirabayashi, I
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 2005, 417 (3-4): : 77 - 84

← 1 2 3 4 5 →