Formation of MgB2 at low temperatures by reaction of Mg with B6Si

被引：11

作者：

Cooley, LD ^{[1
]}

Kang, K ^{[1
]}

Klie, RF ^{[1
]}

Li, Q ^{[1
]}

Moodenbaugh, AM ^{[1
]}

Sabatini, RL ^{[1
]}

机构：

[1] Brookhaven Natl Lab, Div Mat Sci, Upton, NY 11973 USA

来源：

SUPERCONDUCTOR SCIENCE & TECHNOLOGY | 2004年 / 17卷 / 07期

关键词：

D O I：

10.1088/0953-2048/17/7/020

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Formation of MgB2 by reactions of Mg with B6Si and Mg with B were compared, the former also producing Mg2Si as a major product. Compared to the binary system, the ternary reactions for identical time and temperature were more complete at 750degreesC and below, as indicated by higher diamagnetic shielding and larger x-ray diffraction peak intensities relative to those of Mg. MgB2 could be produced at temperatures as low as 450degreesC by the ternary reaction. Analyses by electron microscopy, x-ray diffraction and of the upper critical field show that Si does not enter the MgB2 phase.

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页码：942 / 946

页数：5

相关论文

共 24 条

[1] Low temperature formation of superconducting MgB2 phase from elements by mechanical milling [J].

Abe, H ;

Naito, M ;

Nogi, K ;

Matsuda, M ;

Miyake, M ;

Ohara, S ;

Kondo, A ;

Fukui, T .

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 2003, 391 (02) :211-216

[2]

BRACCINI V, UNPUB CONDMAT0402001

[3] ATOMIC-RESOLUTION CHEMICAL-ANALYSIS USING A SCANNING-TRANSMISSION ELECTRON-MICROSCOPE [J].

BROWNING, ND ;

CHISHOLM, MF ;

PENNYCOOK, SJ .

NATURE, 1993, 366 (6451) :143-146

[4] Temperature-dependent Hc2 anisotropy in MgB2 as inferred from measurements on polycrystals -: art. no. 212501 [J].

Bud'ko, SL ;

Canfield, PC .

PHYSICAL REVIEW B, 2002, 65 (21) :1-3

[5] Superconductivity of Mg(B1-xCx)2 ternary compounds [J].

Cheng, ZH ;

Shen, BG ;

Zhang, J ;

Zhang, SY ;

Zhao, TY ;

Zhao, HW .

JOURNAL OF APPLIED PHYSICS, 2002, 91 (10) :7125-7127

[6] Magnetic characterization of sintered MgB2 samples:: effect of substitution or 'doping' with Li, Al and Si [J].

Cimberle, MR ;

Novak, M ;

Manfrinetti, P ;

Palenzona, A .

SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 2002, 15 (01) :43-47

[7] Substitution-induced pinning in MgB2 superconductor doped with SiC nano-particles [J].

Dou, SX ;

Pan, AV ;

Zhou, S ;

Ionescu, M ;

Liu, HK ;

Munroe, PR .

SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 2002, 15 (11) :1587-1591

[8] Enhancement of the critical current density and flux pinning of MgB2 superconductor by nanoparticle SIC doping [J].

Dou, SX ;

Soltanian, S ;

Horvat, J ;

Wang, XL ;

Zhou, SH ;

Ionescu, M ;

Liu, HK ;

Munroe, P ;

Tomsic, M .

APPLIED PHYSICS LETTERS, 2002, 81 (18) :3419-3421

[9] Superconducting properties of MgB2 tapes and wires [J].

Flükiger, R ;

Suo, HL ;

Musolino, N ;

Beneduce, C ;

Toulemonde, P ;

Lezza, P .

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 2003, 385 (1-2) :286-305

[10] Very high upper critical fields in MgB2 produced by selective tuning of impurity scattering [J].

Gurevich, A ;

Patnaik, S ;

Braccini, V ;

Kim, KH ;

Mielke, C ;

Song, X ;

Cooley, LD ;

Bu, SD ;

Kim, DM ;

Choi, JH ;

Belenky, LJ ;

Giencke, J ;

Lee, MK ;

Tian, W ;

Pan, XQ ;

Siri, A ;

Hellstrom, EE ;

Eom, CB ;

Larbalestier, DC .

SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 2004, 17 (02) :278-286