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作者:

Liu, Zhiyong (Liu, Zhiyong.) | Suo, Hongli (Suo, Hongli.) (学者:索红莉) | Ma, Lin (Ma, Lin.) | Zhao, Junjing (Zhao, Junjing.) | Ni, Baorong (Ni, Baorong.) | Guo, Zhichao (Guo, Zhichao.) | Yan, Binjie (Yan, Binjie.) | Liu, Min (Liu, Min.) | Wu, Ziping (Wu, Ziping.) | Zhou, Meiling (Zhou, Meiling.)

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摘要:

We report the effect of fluorine doping on the fabrication and superconductivity of the iron-based arsenic oxide SmO1-xFδFeAs (δ≥x) compound. The fluorine over-doping can greatly reduce the heat treatment temperature and the heat treatment time, meanwhile the superconductivity of the SmO1-xFδFeAs samples does not reduce. The critical transition temperature (Tc) is as high as 56.5 K for the SmO0.7F0.3FeAs sample prepared by the two-step solid state reaction method at 1120°C for 40 h, the Jc of the sample is 2.4×105 A/cm2 (10 K, 0 T). Tc of the fluorine over-doped SmO0.7F0.35FeAs and SmO0.7F0.4FeAs samples prepared by the two-step solid state reaction method at 1100°C for 20 h are 56 and 55 K, respectively. Jc of the both samples are 1.9×105 and 1.7×105 A/cm2 (10 K, 0 T), respectively. Copyright © 2012, Northwest Institute for Nonferrous Metal Research. Published by Elsevier BV. All rights reserved.

关键词:

Heat treatment Doping (additives) Fluorine Fabrication Iron oxides Solid state reactions Iron-based Superconductors

作者机构:

  • [ 1 ] [Liu, Zhiyong]Key Laboratory of Functional Materials of Education Ministry, Beijing University of Technology, Beijing 100022, China
  • [ 2 ] [Suo, Hongli]Key Laboratory of Functional Materials of Education Ministry, Beijing University of Technology, Beijing 100022, China
  • [ 3 ] [Ma, Lin]Key Laboratory of Functional Materials of Education Ministry, Beijing University of Technology, Beijing 100022, China
  • [ 4 ] [Zhao, Junjing]University of Illinois, Chicago, IL 60607, United States
  • [ 5 ] [Zhao, Junjing]Argonne National Laboratory, Argonne, IL 60439, United States
  • [ 6 ] [Ni, Baorong]Fukuoka Institute of Technology, Fukuoka 3-30-1, Japan
  • [ 7 ] [Guo, Zhichao]Key Laboratory of Functional Materials of Education Ministry, Beijing University of Technology, Beijing 100022, China
  • [ 8 ] [Yan, Binjie]Key Laboratory of Functional Materials of Education Ministry, Beijing University of Technology, Beijing 100022, China
  • [ 9 ] [Liu, Min]Key Laboratory of Functional Materials of Education Ministry, Beijing University of Technology, Beijing 100022, China
  • [ 10 ] [Wu, Ziping]Key Laboratory of Functional Materials of Education Ministry, Beijing University of Technology, Beijing 100022, China
  • [ 11 ] [Zhou, Meiling]Key Laboratory of Functional Materials of Education Ministry, Beijing University of Technology, Beijing 100022, China

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来源 :

Rare Metal Materials and Engineering

ISSN: 1002-185X

年份: 2012

期: 7

卷: 41

页码: 1144-1148

0 . 7 0 0

JCR@2022

ESI学科: MATERIALS SCIENCE;

JCR分区:4

中科院分区:4

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