Nickel-based layered superconductor, LaNiOAs

Takumi Watanabe; Hiroshi Yanagi; Yoichi Kamihara; Toshio Kamiya; Masahiro Hirano; Hideo Hosono

doi:10.1016/j.jssc.2008.04.033

Nickel-based layered superconductor, LaNiOAs

Takumi Watanabe, Hiroshi Yanagi, Yoichi Kamihara, Toshio Kamiya, Masahiro Hirano, Hideo Hosono

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

95 Citations (Scopus)

Abstract

Rietveld analysis of the powder X-ray diffraction of a new layered oxyarsenide, LaNiOAs, which was synthesized by solid-state reactions, revealed that LaNiOAs belongs to the tetragonal ZrCuSiAs-type structure (P4/nmm) and is composed of alternating stacks of La-O and Ni-As layers. The electrical and magnetic measurements demonstrated that LaNiOAs exhibits a superconducting transition at 2.4 K, and above this, LaNiOAs shows metallic conduction and Pauli paramagnetism. The diamagnetic susceptibility measured at 1.8 K corresponded to ∼20% of perfect diamagnetic susceptibility, substantiating that LaNiOAs is a bulk superconductor.

Original language	English
Pages (from-to)	2117-2120
Number of pages	4
Journal	Journal of Solid State Chemistry
Volume	181
Issue number	8
DOIs	https://doi.org/10.1016/j.jssc.2008.04.033
Publication status	Published - 2008 Aug
Externally published	Yes

Keywords

LaNiOAs
Layered compound
Superconductor

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Condensed Matter Physics
Physical and Theoretical Chemistry
Inorganic Chemistry
Materials Chemistry

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10.1016/j.jssc.2008.04.033

Cite this

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title = "Nickel-based layered superconductor, LaNiOAs",

abstract = "Rietveld analysis of the powder X-ray diffraction of a new layered oxyarsenide, LaNiOAs, which was synthesized by solid-state reactions, revealed that LaNiOAs belongs to the tetragonal ZrCuSiAs-type structure (P4/nmm) and is composed of alternating stacks of La-O and Ni-As layers. The electrical and magnetic measurements demonstrated that LaNiOAs exhibits a superconducting transition at 2.4 K, and above this, LaNiOAs shows metallic conduction and Pauli paramagnetism. The diamagnetic susceptibility measured at 1.8 K corresponded to ∼20% of perfect diamagnetic susceptibility, substantiating that LaNiOAs is a bulk superconductor.",

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T1 - Nickel-based layered superconductor, LaNiOAs

AU - Watanabe, Takumi

AU - Yanagi, Hiroshi

AU - Kamihara, Yoichi

AU - Kamiya, Toshio

AU - Hirano, Masahiro

AU - Hosono, Hideo

PY - 2008/8

Y1 - 2008/8

N2 - Rietveld analysis of the powder X-ray diffraction of a new layered oxyarsenide, LaNiOAs, which was synthesized by solid-state reactions, revealed that LaNiOAs belongs to the tetragonal ZrCuSiAs-type structure (P4/nmm) and is composed of alternating stacks of La-O and Ni-As layers. The electrical and magnetic measurements demonstrated that LaNiOAs exhibits a superconducting transition at 2.4 K, and above this, LaNiOAs shows metallic conduction and Pauli paramagnetism. The diamagnetic susceptibility measured at 1.8 K corresponded to ∼20% of perfect diamagnetic susceptibility, substantiating that LaNiOAs is a bulk superconductor.

AB - Rietveld analysis of the powder X-ray diffraction of a new layered oxyarsenide, LaNiOAs, which was synthesized by solid-state reactions, revealed that LaNiOAs belongs to the tetragonal ZrCuSiAs-type structure (P4/nmm) and is composed of alternating stacks of La-O and Ni-As layers. The electrical and magnetic measurements demonstrated that LaNiOAs exhibits a superconducting transition at 2.4 K, and above this, LaNiOAs shows metallic conduction and Pauli paramagnetism. The diamagnetic susceptibility measured at 1.8 K corresponded to ∼20% of perfect diamagnetic susceptibility, substantiating that LaNiOAs is a bulk superconductor.

KW - LaNiOAs

KW - Layered compound

KW - Superconductor

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Nickel-based layered superconductor, LaNiOAs

Abstract

Keywords

ASJC Scopus subject areas

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