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

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

doi:10.1143/JPSJ.73.530

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

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

Research output: Contribution to journal › Article › peer-review

133 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 T_c 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, H_c1(0), is 3.5 mT. The T_c 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-T_c phase in Y₂C₃.

Original language	English
Pages (from-to)	530-532
Number of pages	3
Journal	journal of the physical society of japan
Volume	73
Issue number	3
DOIs	https://doi.org/10.1143/JPSJ.73.530
Publication status	Published - Mar 2004
Externally published	Yes

Keywords

Lanthanoid carbide
Superconductivity
Susceptibility
YC

ASJC Scopus subject areas

General Physics and Astronomy

Access to Document

10.1143/JPSJ.73.530

Cite this

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

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.",

keywords = "Lanthanoid carbide, Superconductivity, Susceptibility, YC",

author = "Gaku Amano and Satoshi Akutagawa and Takahiro Muranaka and Yuji Zenitani and Jun Akimitsu",

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T1 - Superconductivity at 18 K in yttrium sesquicarbide system, Y 2C3

AU - Amano, Gaku

AU - Akutagawa, Satoshi

AU - Muranaka, Takahiro

AU - Zenitani, Yuji

AU - Akimitsu, Jun

PY - 2004/3

Y1 - 2004/3

N2 - 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.

AB - 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.

KW - Lanthanoid carbide

KW - Superconductivity

KW - Susceptibility

KW - YC

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