Superconducting property of Zr-Co and Zr-Co-Al alloys fabricated by rapid solidification

D. Okai; R. Nagai; G. Motoyama; T. Fukami; T. Yamasaki; Yoshihiko Yokoyama; H. M. Kimura; A. Inoue

doi:10.1016/j.physc.2010.05.032

Superconducting property of Zr-Co and Zr-Co-Al alloys fabricated by rapid solidification

D. Okai, R. Nagai, G. Motoyama, T. Fukami, T. Yamasaki, Yoshihiko Yokoyama, H. M. Kimura, A. Inoue

Institute for Materials Research (IMR)

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

8 Citations (Scopus)

Abstract

The superconducting property of Zr _{(1 x)} Co _x (x = 10-50 at.%) alloys and a Zr ₅₅ Co ₃₀ Al ₁₅ bulk metallic glass fabricated using techniques of rapid solidification was investigated. The Zr ₅₅ Co ₃₀ Al ₁₅ alloy crystallized by heat treatment in a vacuum atmosphere exhibited superconductivity of T _c,on = 2.4 K. This was attributable to the superconducting property of a crystalline Zr-Co alloy precipitated in the Zr ₅₅ Co ₃₀ Al ₁₅ alloy. The T _c,on of the crystalline Zr _{(1 x)} Co _x alloy was sensitive to the Co content. The increase of Co content for the Zr _{(1 x)} Co _x alloy led to the decrease of T _c,on . The Zr _{(1 x)} Co _x alloy exhibited superconductivity of a maximum T _c,on = 3.9 K for the Zr ₈₀ Co ₂₀ alloy with superconducting nanocrystal particles embedded in the amorphous matrix.

Original language	English
Pages (from-to)	1048-1051
Number of pages	4
Journal	Physica C: Superconductivity and its applications
Volume	470
Issue number	20
DOIs	https://doi.org/10.1016/j.physc.2010.05.032
Publication status	Published - 2010 Nov 1

Keywords

Metallic glass
Nanocrystal
Rapid solidification
Zr-Co based alloy

ASJC Scopus subject areas

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

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title = "Superconducting property of Zr-Co and Zr-Co-Al alloys fabricated by rapid solidification",

abstract = " The superconducting property of Zr (1 x) Co x (x = 10-50 at.%) alloys and a Zr 55 Co 30 Al 15 bulk metallic glass fabricated using techniques of rapid solidification was investigated. The Zr 55 Co 30 Al 15 alloy crystallized by heat treatment in a vacuum atmosphere exhibited superconductivity of T c,on = 2.4 K. This was attributable to the superconducting property of a crystalline Zr-Co alloy precipitated in the Zr 55 Co 30 Al 15 alloy. The T c,on of the crystalline Zr (1 x) Co x alloy was sensitive to the Co content. The increase of Co content for the Zr (1 x) Co x alloy led to the decrease of T c,on . The Zr (1 x) Co x alloy exhibited superconductivity of a maximum T c,on = 3.9 K for the Zr 80 Co 20 alloy with superconducting nanocrystal particles embedded in the amorphous matrix.",

keywords = "Metallic glass, Nanocrystal, Rapid solidification, Zr-Co based alloy",

author = "D. Okai and R. Nagai and G. Motoyama and T. Fukami and T. Yamasaki and Yoshihiko Yokoyama and Kimura, {H. M.} and A. Inoue",

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doi = "10.1016/j.physc.2010.05.032",

language = "English",

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T1 - Superconducting property of Zr-Co and Zr-Co-Al alloys fabricated by rapid solidification

AU - Okai, D.

AU - Nagai, R.

AU - Motoyama, G.

AU - Fukami, T.

AU - Yamasaki, T.

AU - Yokoyama, Yoshihiko

AU - Kimura, H. M.

AU - Inoue, A.

PY - 2010/11/1

Y1 - 2010/11/1

N2 - The superconducting property of Zr (1 x) Co x (x = 10-50 at.%) alloys and a Zr 55 Co 30 Al 15 bulk metallic glass fabricated using techniques of rapid solidification was investigated. The Zr 55 Co 30 Al 15 alloy crystallized by heat treatment in a vacuum atmosphere exhibited superconductivity of T c,on = 2.4 K. This was attributable to the superconducting property of a crystalline Zr-Co alloy precipitated in the Zr 55 Co 30 Al 15 alloy. The T c,on of the crystalline Zr (1 x) Co x alloy was sensitive to the Co content. The increase of Co content for the Zr (1 x) Co x alloy led to the decrease of T c,on . The Zr (1 x) Co x alloy exhibited superconductivity of a maximum T c,on = 3.9 K for the Zr 80 Co 20 alloy with superconducting nanocrystal particles embedded in the amorphous matrix.

AB - The superconducting property of Zr (1 x) Co x (x = 10-50 at.%) alloys and a Zr 55 Co 30 Al 15 bulk metallic glass fabricated using techniques of rapid solidification was investigated. The Zr 55 Co 30 Al 15 alloy crystallized by heat treatment in a vacuum atmosphere exhibited superconductivity of T c,on = 2.4 K. This was attributable to the superconducting property of a crystalline Zr-Co alloy precipitated in the Zr 55 Co 30 Al 15 alloy. The T c,on of the crystalline Zr (1 x) Co x alloy was sensitive to the Co content. The increase of Co content for the Zr (1 x) Co x alloy led to the decrease of T c,on . The Zr (1 x) Co x alloy exhibited superconductivity of a maximum T c,on = 3.9 K for the Zr 80 Co 20 alloy with superconducting nanocrystal particles embedded in the amorphous matrix.

KW - Metallic glass

KW - Nanocrystal

KW - Rapid solidification

KW - Zr-Co based alloy

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JO - Physica C: Superconductivity and its Applications

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SN - 0921-4534

IS - 20

ER -

Superconducting property of Zr-Co and Zr-Co-Al alloys fabricated by rapid solidification

Abstract

Keywords

ASJC Scopus subject areas

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