Superconductivity at 18 K in yttrium sesquicarbide system, Y 2C3

Gaku Amano, Satoshi Akutagawa, Takahiro Muranaka, Yuji Zenitani, Jun Akimitsu

Research output: Contribution to journalArticle

110 Citations (Scopus)

Abstract

In this study, we investigated superconductivity at 18 K in an yttrium sesquicarbide system, Y2C3, by a magnetization measurement, although this material with a maximum Tc of 11.5 K has already been investigated by Krupka et al. in J. Less-Common Met. 17 (1969) 91. The crystal structure of Y2C3 is a body-centered cubic (Pu2C3-type) structure, and the lattice parameters are varied by heat treatment conditions. The magnetization (M-H) curves of this compound show a typical type-II superconducting behavior, and the lower critical field, Hc1(0), is 3.5 mT. The Tc value in this system is changed in the range from 15 K to 18 K, depending on sintering conditions. The sintering conditions in this work are different from those in a previous work by Krupka et al. We successfully synthesized a new high-Tc phase in Y2C3.

Original languageEnglish
Pages (from-to)530-532
Number of pages3
JournalJournal of the Physical Society of Japan
Volume73
Issue number3
DOIs
Publication statusPublished - Mar 2004
Externally publishedYes

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yttrium
superconductivity
sintering
magnetization
lattice parameters
heat treatment
crystal structure
curves

Keywords

  • Lanthanoid carbide
  • Superconductivity
  • Susceptibility
  • YC

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Superconductivity at 18 K in yttrium sesquicarbide system, Y 2C3 . / Amano, Gaku; Akutagawa, Satoshi; Muranaka, Takahiro; Zenitani, Yuji; Akimitsu, Jun.

In: Journal of the Physical Society of Japan, Vol. 73, No. 3, 03.2004, p. 530-532.

Research output: Contribution to journalArticle

Amano, Gaku ; Akutagawa, Satoshi ; Muranaka, Takahiro ; Zenitani, Yuji ; Akimitsu, Jun. / Superconductivity at 18 K in yttrium sesquicarbide system, Y 2C3 . In: Journal of the Physical Society of Japan. 2004 ; Vol. 73, No. 3. pp. 530-532.
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