Superconductivity in intermetallic W7Re13X (X = B and C) compounds

Kenji Kawashima; Akihiko Kawano; Takahiro Muranaka; Jun Akimitsu

doi:10.1143/JPSJ.74.700

Superconductivity in intermetallic W₇Re₁₃X (X = B and C) compounds

Kenji Kawashima, Akihiko Kawano, Takahiro Muranaka, Jun Akimitsu

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

20 Citations (Scopus)

Abstract

We discovered superconductivity in W₇Re₁₃X (X = B and C) (T_c = 7:1 K and 7.3 K, respectively), and their superconducting properties are discussed. The crystal structure of W₇Re₁₃X is β-Mn-type (cubic, space group: P4₁32), and Re atoms form a tilted octahedron. The magnetization (M-H) curves show typical type-II superconducting behavior, and the lower critical field H_c1(0), the upper critical field H_c2(0) and the Ginzburg-Landau (GL) parameter κ are 7.7 mT, 11.4T and 54 for X = B and 4.0 mT, 12.6T and 80 for X = C, respectively. From the specific heat measurement, the superconducting gap magnitudes are estimated to be 2Δ=k_BT_c = 4:28 and 4.02, respectively.

Original language	English
Pages (from-to)	700-704
Number of pages	5
Journal	journal of the physical society of japan
Volume	74
Issue number	2
DOIs	https://doi.org/10.1143/JPSJ.74.700
Publication status	Published - Feb 2005
Externally published	Yes

Keywords

Boride
Carbide
Electrical resistivity
Specific heat
Superconductivity
Susceptibility
WReB
WReC

ASJC Scopus subject areas

Physics and Astronomy(all)

Access to Document

10.1143/JPSJ.74.700

Cite this

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title = "Superconductivity in intermetallic W7Re13X (X = B and C) compounds",

abstract = "We discovered superconductivity in W7Re13X (X = B and C) (Tc = 7:1 K and 7.3 K, respectively), and their superconducting properties are discussed. The crystal structure of W7Re13X is β-Mn-type (cubic, space group: P4132), and Re atoms form a tilted octahedron. The magnetization (M-H) curves show typical type-II superconducting behavior, and the lower critical field Hc1(0), the upper critical field Hc2(0) and the Ginzburg-Landau (GL) parameter κ are 7.7 mT, 11.4T and 54 for X = B and 4.0 mT, 12.6T and 80 for X = C, respectively. From the specific heat measurement, the superconducting gap magnitudes are estimated to be 2Δ=kBTc = 4:28 and 4.02, respectively.",

keywords = "Boride, Carbide, Electrical resistivity, Specific heat, Superconductivity, Susceptibility, WReB, WReC",

author = "Kenji Kawashima and Akihiko Kawano and Takahiro Muranaka and Jun Akimitsu",

year = "2005",

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AU - Kawashima, Kenji

AU - Kawano, Akihiko

AU - Muranaka, Takahiro

AU - Akimitsu, Jun

PY - 2005/2

Y1 - 2005/2

N2 - We discovered superconductivity in W7Re13X (X = B and C) (Tc = 7:1 K and 7.3 K, respectively), and their superconducting properties are discussed. The crystal structure of W7Re13X is β-Mn-type (cubic, space group: P4132), and Re atoms form a tilted octahedron. The magnetization (M-H) curves show typical type-II superconducting behavior, and the lower critical field Hc1(0), the upper critical field Hc2(0) and the Ginzburg-Landau (GL) parameter κ are 7.7 mT, 11.4T and 54 for X = B and 4.0 mT, 12.6T and 80 for X = C, respectively. From the specific heat measurement, the superconducting gap magnitudes are estimated to be 2Δ=kBTc = 4:28 and 4.02, respectively.

AB - We discovered superconductivity in W7Re13X (X = B and C) (Tc = 7:1 K and 7.3 K, respectively), and their superconducting properties are discussed. The crystal structure of W7Re13X is β-Mn-type (cubic, space group: P4132), and Re atoms form a tilted octahedron. The magnetization (M-H) curves show typical type-II superconducting behavior, and the lower critical field Hc1(0), the upper critical field Hc2(0) and the Ginzburg-Landau (GL) parameter κ are 7.7 mT, 11.4T and 54 for X = B and 4.0 mT, 12.6T and 80 for X = C, respectively. From the specific heat measurement, the superconducting gap magnitudes are estimated to be 2Δ=kBTc = 4:28 and 4.02, respectively.

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KW - Carbide

KW - Electrical resistivity

KW - Specific heat

KW - Superconductivity

KW - Susceptibility

KW - WReB

KW - WReC

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