ENHANCEMENT OF TRANSPORT CRITICAL CURRENT DENSITY IN NANO Cr2O3 ADDED Ag-SHEATHED (Bi1.6Pb0.4)Sr2Ca2Cu3O10 SUPERCONDUCTOR TAPES

被引：2

作者：

Kong, W. ^{[1
]}

Abd-Shukor, R. ^{[1
]}

机构：

[1] Univ Kebangsaan Malaysia, Sch Appl Phys, Bangi 43600, Selangor, Malaysia

来源：

INTERNATIONAL JOURNAL OF MODERN PHYSICS B | 2010年 / 24卷 / 28期

关键词：

Current density; flux pinning; nanometric Cr2O3; SINGLE-CRYSTALS; (BI; PB)-2223; SUPERCONDUCTORS; THERMOMECHANICAL TREATMENT; MICROSTRUCTURAL EVOLUTION; POINT-DEFECTS; BI-2223; TAPES; FE; NI; FIELD;

D O I：

10.1142/S0217979210056062

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Ag-sheathed (Bi1.6Pb0.4)Sr2Ca2Cu3O10 (Bi - 2223) high temperature superconductor tapes with 0.1 wt% nano Cr2O3 were fabricated using the powder-in-tube method. The effects of intermediate rolling and sintering temperature on the transport critical current density (J(c)) under self-field and applied magnetic field were studied. The X-ray patterns showed a dominant Bi - 2223 phase (similar to 80%). A decrease in J(c) in applied magnetic field, parallel or perpendicular to the sample wide surface was observed for all tapes. Intermediate rolling improved the self-field J(c) (T = 77 K) of the tapes by 25%. Both J(c) versus applied field curves and normalized pinning force density F-p/F-p (max) versus applied field curves showed that the pinning strength was significantly enhanced with thermo-mechanical treatments. SEM micrographs showed improvements in the grain alignment of tapes with intermediate rolling. Enhancement in J(c) was observed in the nano Cr2O3 added tapes

引用

页码：5625 / 5634

页数：10

共 38 条

[21] Enhanced flux pinning in Ag-sheathed Bi(Pb)-Sr-Ca-Cu-O superconductors tapes with addition of magnetic nanorod γ-Fe2O3 [J].

Lau, K. T. ;

Yahya, S. Y. ;

Abd-Shukor, R. .

JOURNAL OF APPLIED PHYSICS, 2006, 99 (12)

[22] Effects of pressing on the current flow in a Ag/Bi-2223 tape [J].

Lee, HG ;

Kim, WJ ;

Hong, GW ;

Lee, MH ;

Park, HS .

PHYSICA C, 1998, 297 (1-2) :124-132

[23] Nanostructures fabrication on Ta thin film using atomic force microscope lithography [J].

Lee, S ;

Lee, H ;

Lee, DH ;

Park, BJ ;

Yeom, GY .

MOLECULAR CRYSTALS AND LIQUID CRYSTALS, 2006, 445 (115/[405]-118/[408]) :115-118

[24] Phase transformation and liquid phase conversion during the final processing of Bi-2223 /Ag PIT tapes and their influence on critical current density [J].

Liu, HK ;

Zeng, R ;

Fu, XK ;

Dou, SX .

PHYSICA C, 1999, 325 (1-2) :70-76

[25] Frozen flux superconductors [J].

Lyuksyutov, IF ;

Naugle, DG .

MODERN PHYSICS LETTERS B, 1999, 13 (15) :491-497

[26] Vortex pinning by Ni point defects in Bi2Sr2Ca(Cu1-xNix)2O8+δ single crystals [J].

Noetzel, R ;

Westerholt, K .

PHYSICAL REVIEW B, 1998, 58 (22) :15108-15115

[27] Magnetic irreversibility lines and critical currents of Bi(2212) single crystals doped by Fe, Ni, Co and Zn [J].

Noetzel, R ;

VomHedt, B ;

Westerholt, K .

PHYSICA C, 1996, 260 (3-4) :290-296

[28] WORK INSTABILITY AND ITS INFLUENCE ON THE CRITICAL CURRENT-DENSITY OF SILVER SHEATHED BI2223 TAPES [J].

OSAMURA, K ;

OH, SS ;

OCHIAI, S .

SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 1992, 5 (01) :1-6

[29] Direct evidence for residual, preferentially-oriented cracks in rolled and pressed Ag-clad BSCCO-2223 tapes and their effect on the critical current density [J].

Parrell, JA ;

Polyanskii, AA ;

Pashitski, AE ;

Larbalestier, DC .

SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 1996, 9 (05) :393-398

[30] Enhanced the flux pinning in Bi-2223/Ag by induced Cr-ion defects [J].

Pu, MH ;

Feng, Y ;

Zhang, PX ;

Zhou, L ;

Wang, JX ;

Sun, YP ;

Du, JJ .

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 2003, 386 :41-46

← 1 2 3 4 →