Effect of Zn on pinning properties in MgB2 bulk system

被引：12

作者：

Kimishima, Y. ^{[1
]}

Sugiyama, Y. ^{[1
]}

Numa, S. ^{[1
]}

Uehara, M. ^{[1
]}

Kuramoto, T. ^{[1
]}

机构：

[1] Yokohama Natl Univ, Dept Phys, Fac Engn, Grad Sch, Yokohama, Kanagawa 2408501, Japan

来源：

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

关键词：

critical current density; critical state model; magnetization; Zn; MgB2;

D O I：

10.1016/j.physc.2008.05.028

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Bulk samples of nominal Zn-x(MgB2)(1-x) were prepared from the mixture of Mg, B, and ZnO in the Ar atmosphere at 900 degrees C for 30 min, where x was 0-0.1. Critical current densities J(c)'s were estimated from the magnetization data using an extended critical state model. Improvement of J(c) was confirmed at 20 K and 1 T for the sample of x = 0.02-0.04. Secondary phase of Mg-Zn alloy may be the effective pinning centers in this system. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：1185 / 1187

页数：3

共 17 条

[1] HARD SUPERCONDUCTIVITY - THEORY OF MOTION OF ABRIKOSOV FLUX LINES
ANDERSON, PW
KIM, YB
[J]. REVIEWS OF MODERN PHYSICS, 1964, 36 (1P1) : 39 - &
[2] MAGNETIZATION OF HIGH-FIELD SUPERCONDUCTORS
BEAN, CP
[J]. REVIEWS OF MODERN PHYSICS, 1964, 36 (1P1) : 31 - +
[3] Substitution effect of Zn and Cu in MgB2 on Tc and structure
Kazakov, SM
Angst, M
Karpinski, J
Fita, IM
Puzniak, R
[J]. SOLID STATE COMMUNICATIONS, 2001, 119 (01) : 1 - 5
[4] Complete flux jump in bulk MgB2 sintered under high pressure
Kimishima, Y.
Takami, S.
Okuda, T.
Uehara, M.
Kuramoto, T.
Sugiyama, Y.
[J]. PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 2007, 463 (SUPPL.): : 281 - 285
[5] Pinning enhancement in M/MgB2 (M=Ag, Cu and Nb) system
Kimishima, Y.
Takami, S.
Uehara, M.
Okuda, T.
Kuramoto, T.
[J]. 7TH EUROPEAN CONFERENCE ON APPLIED SUPERCONDUCTIVITY (EUCAS'05), 2006, 43 : 488 - 491
[6] Doping effects of some metallic elements for SiC/MgB2 bulk system
Kimishima, Y.
Okuda, T.
Uehara, M.
Kuramoto, T.
[J]. PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 2007, 463 (SUPPL.): : 286 - 289
[7] Magnetization analysis of sintered Bi2223 using an extended critical state model
Kimishima, Y
Ichikawa, H
Takano, S
Kuramoto, T
[J]. SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 2004, 17 (02) : S36 - S41
[8] La-doping effects on pinning properties of MgB2
Kimishima, Y
Uehara, M
Kuramoto, T
Takano, S
Takami, S
[J]. PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 2004, 412 : 402 - 406
[9] Comments on magnetically estimated Jc for MgB2 by critical state models
Kimishima, Y
Uehara, M
Kuramoto, T
Ichiyanagi, Y
Iriyama, Y
Yorimasa, K
[J]. PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 2002, 377 (03): : 196 - 201
[10] Pinning property of Cu/MgB2 system
Kimishima, Yoshihide
Takami, Satoshi
Uehara, Masatomo
Kuramoto, Tetsuji
[J]. PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 2006, 445 : 224 - 227

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