Superconductivity to 21 K in intermetallic thorium-based boride carbides

J. L. Sarrao; M. C. de Andrade; J. Herrmann; S. H. Han; Z. Fisk; M. B. Maple; R. J. Cava

doi:10.1016/0921-4534(94)90813-3

Superconductivity to 21 K in intermetallic thorium-based boride carbides

J. L. Sarrao, M. C. de Andrade, J. Herrmann, S. H. Han, Z. Fisk, M. B. Maple, R. J. Cava

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Abstract

We report the observation of superconductivity in intermetallic thorium-based boride carbides. For ThM₂B₂C, superconducting T_c's of 6 K (M=Ni), 6.5 K (M=Pt), and 14.5 K (M=Pd) have been measured. These compounds are isostructural with the recently reported LnNi₂B₂C superconductors. We have also observed bulk superconductivity in an as-yet-undetermined thorium-palladium-boron-carbon quaternary phase at 21.5 K. Critical-field measurements on the two palladium-based superconductors, as well as the pressure dependence of T_c for the 21.5 K superconductor, are reported.

Original language	English (US)
Pages (from-to)	65-69
Number of pages	5
Journal	Physica C: Superconductivity and its Applications
Volume	229
Issue number	1-2
DOIs	https://doi.org/10.1016/0921-4534(94)90813-3
State	Published - Aug 1 1994
Externally published	Yes

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Energy Engineering and Power Technology
Electrical and Electronic Engineering

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10.1016/0921-4534(94)90813-3

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title = "Superconductivity to 21 K in intermetallic thorium-based boride carbides",

abstract = "We report the observation of superconductivity in intermetallic thorium-based boride carbides. For ThM2B2C, superconducting Tc's of 6 K (M=Ni), 6.5 K (M=Pt), and 14.5 K (M=Pd) have been measured. These compounds are isostructural with the recently reported LnNi2B2C superconductors. We have also observed bulk superconductivity in an as-yet-undetermined thorium-palladium-boron-carbon quaternary phase at 21.5 K. Critical-field measurements on the two palladium-based superconductors, as well as the pressure dependence of Tc for the 21.5 K superconductor, are reported.",

author = "Sarrao, \{J. L.\} and \{de Andrade\}, \{M. C.\} and J. Herrmann and Han, \{S. H.\} and Z. Fisk and Maple, \{M. B.\} and Cava, \{R. J.\}",

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doi = "10.1016/0921-4534(94)90813-3",

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T1 - Superconductivity to 21 K in intermetallic thorium-based boride carbides

AU - Sarrao, J. L.

AU - de Andrade, M. C.

AU - Herrmann, J.

AU - Han, S. H.

AU - Fisk, Z.

AU - Maple, M. B.

AU - Cava, R. J.

PY - 1994/8/1

Y1 - 1994/8/1

N2 - We report the observation of superconductivity in intermetallic thorium-based boride carbides. For ThM2B2C, superconducting Tc's of 6 K (M=Ni), 6.5 K (M=Pt), and 14.5 K (M=Pd) have been measured. These compounds are isostructural with the recently reported LnNi2B2C superconductors. We have also observed bulk superconductivity in an as-yet-undetermined thorium-palladium-boron-carbon quaternary phase at 21.5 K. Critical-field measurements on the two palladium-based superconductors, as well as the pressure dependence of Tc for the 21.5 K superconductor, are reported.

AB - We report the observation of superconductivity in intermetallic thorium-based boride carbides. For ThM2B2C, superconducting Tc's of 6 K (M=Ni), 6.5 K (M=Pt), and 14.5 K (M=Pd) have been measured. These compounds are isostructural with the recently reported LnNi2B2C superconductors. We have also observed bulk superconductivity in an as-yet-undetermined thorium-palladium-boron-carbon quaternary phase at 21.5 K. Critical-field measurements on the two palladium-based superconductors, as well as the pressure dependence of Tc for the 21.5 K superconductor, are reported.

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IS - 1-2

ER -

Superconductivity to 21 K in intermetallic thorium-based boride carbides

Abstract

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