Effects of polycarbosilane doping on the superconductivity and microstructure of MgB2

H. L. Xu; Y. Feng; Y. Zhao; Y. D. Xu; X. J. Wu; M. H. Pu; G. Yan; Y. F. Lu; C. S. Li; P. Ji; Z. H. Shen; Z. Xu

doi:10.1088/0953-2048/19/1/012

Effects of polycarbosilane doping on the superconductivity and microstructure of MgB₂

H. L. Xu
, Y. Feng
, Y. Zhao
, Y. D. Xu
, X. J. Wu
, M. H. Pu
, G. Yan
, Y. F. Lu
, C. S. Li
, P. Ji
, Z. H. Shen
, Z. Xu

School of Materials Sience and Engineering

Zhengzhou University
Northwest Institute for Nonferrous Metal Research
Tongji University
Southwest Jiaotong University
Fudan University

Research output: Contribution to journal › Article › peer-review

9 Scopus citations

Abstract

The effect of polycarbosilane (PCS) doping on the superconducting properties and microstructure of MgB₂ bulk has been studied in this paper. It is found that the lattice parameter a and the superconducting transition temperature decrease with increase of the doping level. However, the critical current density J_c is significantly enhanced and the J _c(B) properties are improved at low temperature. Microstructure analysis indicates that a lot of Mg₂Si nanoparticles, including those 5-10 nm in size, and some lattice defects induced by the PCS doping exist inside the PCS doped MgB₂ samples, which may be the main reason for the enhancement of the flux pinning property.

Original language	English
Pages (from-to)	68-71
Number of pages	4
Journal	Superconductor Science and Technology
Volume	19
Issue number	1
DOIs	https://doi.org/10.1088/0953-2048/19/1/012
State	Published - 1 Jan 2006

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title = "Effects of polycarbosilane doping on the superconductivity and microstructure of MgB2",

abstract = "The effect of polycarbosilane (PCS) doping on the superconducting properties and microstructure of MgB2 bulk has been studied in this paper. It is found that the lattice parameter a and the superconducting transition temperature decrease with increase of the doping level. However, the critical current density Jc is significantly enhanced and the J c(B) properties are improved at low temperature. Microstructure analysis indicates that a lot of Mg2Si nanoparticles, including those 5-10 nm in size, and some lattice defects induced by the PCS doping exist inside the PCS doped MgB2 samples, which may be the main reason for the enhancement of the flux pinning property.",

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T1 - Effects of polycarbosilane doping on the superconductivity and microstructure of MgB2

AU - Xu, H. L.

AU - Feng, Y.

AU - Zhao, Y.

AU - Xu, Y. D.

AU - Wu, X. J.

AU - Pu, M. H.

AU - Yan, G.

AU - Lu, Y. F.

AU - Li, C. S.

AU - Ji, P.

AU - Shen, Z. H.

AU - Xu, Z.

PY - 2006/1/1

Y1 - 2006/1/1

N2 - The effect of polycarbosilane (PCS) doping on the superconducting properties and microstructure of MgB2 bulk has been studied in this paper. It is found that the lattice parameter a and the superconducting transition temperature decrease with increase of the doping level. However, the critical current density Jc is significantly enhanced and the J c(B) properties are improved at low temperature. Microstructure analysis indicates that a lot of Mg2Si nanoparticles, including those 5-10 nm in size, and some lattice defects induced by the PCS doping exist inside the PCS doped MgB2 samples, which may be the main reason for the enhancement of the flux pinning property.

AB - The effect of polycarbosilane (PCS) doping on the superconducting properties and microstructure of MgB2 bulk has been studied in this paper. It is found that the lattice parameter a and the superconducting transition temperature decrease with increase of the doping level. However, the critical current density Jc is significantly enhanced and the J c(B) properties are improved at low temperature. Microstructure analysis indicates that a lot of Mg2Si nanoparticles, including those 5-10 nm in size, and some lattice defects induced by the PCS doping exist inside the PCS doped MgB2 samples, which may be the main reason for the enhancement of the flux pinning property.

UR - https://www.scopus.com/pages/publications/29144456533

U2 - 10.1088/0953-2048/19/1/012

DO - 10.1088/0953-2048/19/1/012

M3 - 文章

AN - SCOPUS:29144456533

SN - 0953-2048

VL - 19

SP - 68

EP - 71

JO - Superconductor Science and Technology

JF - Superconductor Science and Technology

IS - 1

ER -

Effects of polycarbosilane doping on the superconductivity and microstructure of MgB₂

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