Fabrication of Superconducting MgB2-Based Nanocomposites with Magnetic Inclusions by Spark Plasma Sintering

被引：0

作者：

Sandu, Viorel ^{[1
]}

Ion, Ivan ^{[1
]}

Litra-Cristian, Paul ^{[2
]}

Sandu, Elena ^{[3
]}

机构：

[1] Natl Inst Mat Phys, Magurele 077125, Romania

[2] Ennil Racovita Theoret High Sch, Vaslui 0730086, Romania

[3] Horia Hulubei Natl Inst Phys & Nucl Engn, Magurele 077125, Romania

来源：

ADVANCED MATERIALS DESIGN AND MECHANICS | 2012年 / 569卷

关键词：

spark plasma sintering; MgB2; superconductivity; core shell-model; composite; MGB2;

D O I：

10.4028/www.scientific.net/AMR.569.3

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We present the fabrication, structural, and transport properties of MgB2-based ceramic composites with magnetic nanospheres fabricated by spark plasma sintering. The nanospheres are either carbon encapsulated iron or iron oxide. The former nanospheres have been prepared by laser pyrolysis whereas the iron oxide was obtained by the pyrolysis of the polysiloxane-based copolymers embedded into MgB2 matrix during the sintering process. The structural data show the shrinkage of the a-axis lattice constant as a result of the partial carbon substitution for boron. However, the transport data suggest that carbon diffusion is limited to the outer layer of the MgB2 grains in both cases.

引用

页码：3 / +

页数：2

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