Improved Superconducting Properties in Graphene-Doped MgB2 Prepared by Coating Method

Haoran Liu; Fang Yang; Lihua Jin; Shengnan Zhang; Qingyang Wang; Xiaomei Xiong; Jianqing Feng; Chengshan Li; Pingxiang Zhang; Lian Zhou

doi:10.1007/s10948-017-4309-9

Improved Superconducting Properties in Graphene-Doped MgB₂ Prepared by Coating Method

Haoran Liu, Fang Yang, Lihua Jin, Shengnan Zhang, Qingyang Wang, Xiaomei Xiong, Jianqing Feng, Chengshan Li, Pingxiang Zhang, Lian Zhou

School of Materials Sience and Engineering

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

11 Scopus citations

Abstract

The effects of graphene doping on the phase formation and superconductivity of MgB₂ bulks synthesized with different process have been studied systemically. Considering the scattering structure of graphene, coating method was applied to enhance the uniformity of graphene doping. The graphene coated B addition was expected to improve the critical current density of MgB₂ bulks. In our study, several experiments were performed to find out the suitable way for graphene doping. The coating method could enhance the critical current density of MgB₂ from 1.9 × 10⁵ to 2.5 × 10⁵ A/cm² at 20 K and 0 T, compared with that of the undoped sample. And the superconductivity of MgB₂ prepared by coating method got obvious improvement at high field compared with that of pure graphene doping bulk. It can be concluded that the coating method could ensure the uniformity of graphene doping in MgB₂ and refined the grain crystalline effectively.

Original language	English
Pages (from-to)	1053-1058
Number of pages	6
Journal	Journal of Superconductivity and Novel Magnetism
Volume	31
Issue number	4
DOIs	https://doi.org/10.1007/s10948-017-4309-9
State	Published - 1 Apr 2018

Keywords

Composites
Critical current density
Graphene doping
MgB superconductor
Microstructure

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title = "Improved Superconducting Properties in Graphene-Doped MgB2 Prepared by Coating Method",

abstract = "The effects of graphene doping on the phase formation and superconductivity of MgB2 bulks synthesized with different process have been studied systemically. Considering the scattering structure of graphene, coating method was applied to enhance the uniformity of graphene doping. The graphene coated B addition was expected to improve the critical current density of MgB2 bulks. In our study, several experiments were performed to find out the suitable way for graphene doping. The coating method could enhance the critical current density of MgB2 from 1.9 × 105 to 2.5 × 105 A/cm2 at 20 K and 0 T, compared with that of the undoped sample. And the superconductivity of MgB2 prepared by coating method got obvious improvement at high field compared with that of pure graphene doping bulk. It can be concluded that the coating method could ensure the uniformity of graphene doping in MgB2 and refined the grain crystalline effectively.",

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author = "Haoran Liu and Fang Yang and Lihua Jin and Shengnan Zhang and Qingyang Wang and Xiaomei Xiong and Jianqing Feng and Chengshan Li and Pingxiang Zhang and Lian Zhou",

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AU - Liu, Haoran

AU - Yang, Fang

AU - Jin, Lihua

AU - Zhang, Shengnan

AU - Wang, Qingyang

AU - Xiong, Xiaomei

AU - Feng, Jianqing

AU - Li, Chengshan

AU - Zhang, Pingxiang

AU - Zhou, Lian

PY - 2018/4/1

Y1 - 2018/4/1

N2 - The effects of graphene doping on the phase formation and superconductivity of MgB2 bulks synthesized with different process have been studied systemically. Considering the scattering structure of graphene, coating method was applied to enhance the uniformity of graphene doping. The graphene coated B addition was expected to improve the critical current density of MgB2 bulks. In our study, several experiments were performed to find out the suitable way for graphene doping. The coating method could enhance the critical current density of MgB2 from 1.9 × 105 to 2.5 × 105 A/cm2 at 20 K and 0 T, compared with that of the undoped sample. And the superconductivity of MgB2 prepared by coating method got obvious improvement at high field compared with that of pure graphene doping bulk. It can be concluded that the coating method could ensure the uniformity of graphene doping in MgB2 and refined the grain crystalline effectively.

AB - The effects of graphene doping on the phase formation and superconductivity of MgB2 bulks synthesized with different process have been studied systemically. Considering the scattering structure of graphene, coating method was applied to enhance the uniformity of graphene doping. The graphene coated B addition was expected to improve the critical current density of MgB2 bulks. In our study, several experiments were performed to find out the suitable way for graphene doping. The coating method could enhance the critical current density of MgB2 from 1.9 × 105 to 2.5 × 105 A/cm2 at 20 K and 0 T, compared with that of the undoped sample. And the superconductivity of MgB2 prepared by coating method got obvious improvement at high field compared with that of pure graphene doping bulk. It can be concluded that the coating method could ensure the uniformity of graphene doping in MgB2 and refined the grain crystalline effectively.

KW - Composites

KW - Critical current density

KW - Graphene doping

KW - MgB superconductor

KW - Microstructure

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SN - 1557-1939

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JO - Journal of Superconductivity and Novel Magnetism

JF - Journal of Superconductivity and Novel Magnetism

IS - 4

ER -

Improved Superconducting Properties in Graphene-Doped MgB₂ Prepared by Coating Method

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Keywords

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