ID 112427
Author
Muranaka, Kie Tokushima University
Hagiwara, Makoto Kyoto Institute of Technology
Content Type
Journal Article
Description
We investigated the effects of oxidation and reduction on the successive superconducting transition in a ceramic material composed of YBa2Cu4O8 (Y124) submicron grains by linear and non-linear resistivity measurements. This material shows two-step superconducting transition and the lower one is identified as an inter-grain ordering. A sintering process fuses and joins the adjacent grains, so the lower transition was suppressed with increasing sintered time. Although Y124 is a stoichiometric ceramic, a reduction treatment suppressed the temperature of zero resistivity and broadened the non-linear resistivity peak. This suggests an oxygen vacancy was induced on the grain surface.
Journal Title
Journal of Physics: Conference Series
ISSN
17426596
17426588
NCID
AA12839617
Publisher
IOP Publishing
Volume
871
Start Page
012010
Published Date
2017-07-26
Rights
Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.
EDB ID
DOI (Published Version)
URL ( Publisher's Version )
FullText File
language
eng
TextVersion
Publisher
departments
Science and Technology
Liberal Arts and Sciences