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
收藏
页码：9 / 14
页数：6
相关论文
共 26 条
[1]   Superstructure formation and the structural phase diagram of YBa2Cu3O6+x [J].
Andersen, NH ;
von Zimmermann, M ;
Frello, T ;
Käll, M ;
Monster, D ;
Lindgård, PA ;
Madsen, J ;
Niemöller, T ;
Poulsen, HF ;
Schmidt, O ;
Schneider, JR ;
Wolf, T ;
Dosanjh, P ;
Liang, R ;
Hardy, WN .
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 1999, 317 :259-269
[2]   High-resolution XANES study of Eu(Ba1-xRx)2Cu3O7+δ (R = Eu, Pr) [J].
Chen, J. M. ;
Liu, R. S. ;
Lee, J. M. ;
T Lu, K. ;
Yang, T. J. ;
Kramer, M. J. ;
McCallum, R. W. .
NEW JOURNAL OF PHYSICS, 2006, 8
[3]   Soft-x-ray absorption spectroscopy of Nd1+xBa2-xCu3O7+delta (x=0-0.6) [J].
Chen, JM ;
Liu, RG ;
Chung, SC ;
Liu, RS ;
Kramer, MJ ;
Dennis, KW ;
McCallum, RW .
PHYSICAL REVIEW B, 1997, 55 (05) :3186-3191
[4]   Study of light nonstoichiometry in Eu-Ba-Cu-O systems [J].
Cigan, A. ;
Manka, J. ;
Polovkova, J. ;
Majerova, M. ;
Kopcok, M. ;
Van Driessche, I. ;
Zrubec, V. .
8TH EUROPEAN CONFERENCE ON APPLIED SUPERCONDUCTIVITY (EUCAS'07), 2008, 97
[5]   Oxygen stoichiometry and structural parameters of Sm1+xBa2-xCu3Oy solid solutions versus composition and temperature [J].
Drozd, VA ;
Baginski, IL ;
Nedilko, SA ;
Mel'nikov, VS .
JOURNAL OF ALLOYS AND COMPOUNDS, 2004, 384 (1-2) :44-50
[6]   Progress in nanoengineered microstructures for tunable high-current, high-temperature superconducting wires [J].
Holesinger, Terry G. ;
Civale, Leonardo ;
Maiorov, Boris ;
Feldmann, D. Matthew ;
Coulter, J. Yates ;
Miller, J. ;
Maroni, Victor A. ;
Chen, Zhijun ;
Larbalestier, David C. ;
Feenstra, Ron ;
Li, Xiaoping ;
Huang, Yibing ;
Kodenkandath, Thomas ;
Zhang, Wei ;
Rupich, Martin W. ;
Malozemoff, Alex P. .
ADVANCED MATERIALS, 2008, 20 (03) :391-407
[7]   Recent progress on compositional nanostripes of REBa2Cu3O7-δ (RE = Sm, Eu, Gd) superconductors [J].
Hu, A. ;
Koblischka, M. R. ;
Yao, X. ;
Zhou, H. ;
Winter, M. ;
Hartmann, U. ;
Murakami, M. .
SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 2006, 19 (07) :S580-S584
[8]  
Kameneva MY, 2009, J CERAM PROCESS RES, V10, P61
[9]   Nanostripe structures in SmBa2Cu3Ox superconductors [J].
Koblischka, M. R. ;
Winter, M. ;
Hartmann, U. .
SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 2007, 20 (07) :681-686
[10]   Observation of nanostripes and -clusters in (Nd, EuGd)Ba2Cu3Ox superconductors [J].
Koblischka, M. R. ;
Winter, M. ;
Das, P. ;
Koblischka-Veneva, A. ;
Muralidhar, M. ;
Wolf, T. ;
Babu, N. Hari ;
Turner, S. ;
van Tendeloo, G. ;
Hartmann, U. .
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 2009, 469 (04) :168-176
123