The effect of reduced graphene oxide addition on the superconductivity of MgB2

被引：44
作者：
De Silva, K. S. B. [1 ]
Gambhir, S. [2 ,3 ]
Wang, X. L. [1 ]
Xu, X. [1 ]
Li, W. X. [1 ]
Officer, D. L. [2 ,3 ]
Wexler, D. [1 ]
Wallace, G. G. [2 ,3 ]
Dou, S. X. [1 ]
机构：
[1] Univ Wollongong, Inst Superconducting & Elect Mat, Wollongong, NSW 2522, Australia
[2] Univ Wollongong, ARC Ctr Excellence Electromat Sci, Wollongong, NSW 2522, Australia
[3] Univ Wollongong, Intelligent Polymer Res Inst, Wollongong, NSW 2522, Australia
来源：
JOURNAL OF MATERIALS CHEMISTRY | 2012年 / 22卷 / 28期
基金：
澳大利亚研究理事会;
关键词：
CRITICAL-CURRENT DENSITIES; DOPED MGB2; MAGNESIUM DIBORIDE; REDUCTION; TEMPERATURE; RESISTIVITY; CARBON; FIELD; WIRES;
D O I：
10.1039/c2jm30323j
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Reduced graphene oxide (rGO) and highly reduced chemically converted graphene (rCCG) samples were prepared under different processing conditions and were doped into MgB2 by a diffusion process at 800 degrees C for 10 hours. It was demonstrated that a small addition rCCG can significantly improve the superconducting properties of MgB2. Doping of MgB2 with 1 mol% of rCCG resulted in a J(c) of 5.45 x 10(5) A cm(-2) at 20 K in self-fields, which is nearly 32% improvement over that of the undoped sample. This is a significant improvement as most carbon sources adversely affect the J(c) performance at the zero field.
引用
收藏
页码：13941 / 13946
页数：6
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