Effects of Slight Non-Stoichiometry in Sm-Ba-Cu-O Systems on Superconducting Characteristics

被引：7

作者：

Manka, J. ^{[1
]}

Cigan, A. ^{[1
]}

Polovkova, J. ^{[1
]}

Konakovsky, A. ^{[1
]}

Prnova, A. ^{[1
]}

机构：

[1] Slovak Acad Sci, Inst Measurement Sci, Bratislava 84104, Slovakia

来源：

MEASUREMENT SCIENCE REVIEW | 2011年 / 11卷 / 01期

关键词：

Superconductors; Sm-123; cation non-stoichiometry; critical temperature; magnetization; SOLID-SOLUTIONS; THIN-FILMS; SUBSTITUTION; ND1+XBA2-XCU3O7+DELTA; TEMPERATURE; NANOSTRIPES; PARAMETERS; PROGRESS; EU; GD;

D O I：

10.2478/v10048-011-0005-2

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

We studied the effects of slight Sm-Ba non-stoichiometry in Sm-Ba-Cu-O superconducting compounds on their transition, structural, and magnetic properties. Two series of single-phase samples of Sm(1+x)Ba(2-x)Cu(3)O(7+delta) and Sm(1-x)Ba(2+x)Cu(3)O(7+delta) with composition deviation from stoichiometry x from 0 to 0.1 were synthesized by the solid-state reaction method from Sm(2)O(3), BaCO(3) and CuO precursors and sintered at the temperature of similar to 1060 degrees C in flowing oxygen. All samples showed the values of T(c) > 90 K and the volume density, rho, 6.45 g cm(-3) < rho <= 6.73 g cm(-3). The effect of the composite deviation of x on T(c), Delta T(c), and volume magnetization M was studied. For Sm(1+x)Ba(2-x)Cu(3)O(7+delta) compounds, optimal values of x were determined to maximize the width of the magnetization hysteresis at higher values of the applied magnetic field, corresponding mainly to the grain contribution. We also prepared the Sm(1+x)Ba(2)Cu(3)O(7+delta) samples with x from 0 to 0.1 using the same processing conditions as in the case of A and B series. For the Sm(1+x)Ba(2)Cu(3)O(7+delta) samples, values of x = 0.02 - 0.03 optimize T(c), Delta T(c), H(p1) as well as M.

引用

页码：9 / 14

页数：6

共 26 条

[21]

Tallon JL, 2005, FRONTIERS IN SUPERCONDUCTING MATERIALS, P295, DOI 10.1007/3-540-27294-1_7

[22] The effect of processing conditions on the properties of spray dried Nd1Ba2Cu3Oy/Ag composite superconductors [J].

Van Driessche, I ;

Schoofs, B ;

Bruneel, E ;

Hoste, S .

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2004, 24 (06) :1823-1826

[23] Elucidation of the Mechanism in Fluorine-Free Prepared YBa2Cu3O7-δ Coatings [J].

Vermeir, Pieter ;

Cardinael, Iwein ;

Schaubroeck, Joseph ;

Verbeken, Kim ;

Baecker, Michael ;

Lommens, Petra ;

Knaepen, Werner ;

D'haen, Jan ;

De Buysser, Klaartje ;

Van Driessche, Isabel .

INORGANIC CHEMISTRY, 2010, 49 (10) :4471-4477

[24] Microstructure and transport properties of Y-rich YBa2Cu3O7-δ thin films [J].

Wang, H. ;

Serquis, A. ;

Maiorov, B. ;

Civale, L. ;

Jia, Q. X. ;

Arendt, P. N. ;

Foltyn, S. R. ;

MacManus-Driscoll, J. L. ;

Zhang, X. .

JOURNAL OF APPLIED PHYSICS, 2006, 100 (05)

[25] Substitution for Ba by Pr, La, and Eu in Eu(Ba1-xRx)2Cu3O7+δ solid solutions [J].

Xu, YW ;

Kramer, MJ ;

Dennis, KW ;

Wu, H ;

O'Connor, A ;

McCallum, RW ;

Malik, SK ;

Yelon, WB .

PHYSICA C, 2000, 333 (3-4) :195-206

[26] SIMPLIFIED FAST METHOD FOR MAGNETIC CHARACTERISTICS MEASUREMENT OF THE HT(C) SUPERCONDUCTING MATERIALS [J].

ZRUBEC, V ;

CIGAN, A ;

MANKA, J .

PHYSICA C, 1994, 223 (1-2) :90-94

← 1 2 3 →