Open AccessEffects of Carbon Content on the Formation and Critical Temperature of Y-Ni-B-C Superconductor
Author(s) -
Fangwei Wang,
Yan Qi-Wei,
Yuan Peng,
Baogen Shen,
Zhang Pao-Lin
Publication year - 1999
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.48.56
Subject(s) - intermetallic , superconductivity , arc melting , materials science , magnetization , carbon fibers , transition temperature , analytical chemistry (journal) , phase (matter) , condensed matter physics , crystallography , metallurgy , microstructure , chemistry , magnetic field , physics , alloy , composite material , chromatography , quantum mechanics , organic chemistry , composite number
In this paper, we report the formation and superconductivity of quaternary intermetallic system Yni2B2Cx with ThCr2Si2-type structure. Samples prepared by arc-melting crystallize in single phase of the composition of YNi2B2Cx when x=0.9—1.2 while the secondary unknown phases increase obviously when x0.8 or x1.2. Superconducting-transition temperature Tc determined by the tem,perature dependence of magnetization displays two steps with increasing carbon concentration: Tc≈12.5K for x≤0.8, Tx≈15K for x≥0.9.