Preparation and superconductivity of potassium-doped fullerene nanowhiskers

Hiroyuki Takeya; Ryoei Kato; Takatsugu Wakahara; Kun'Ichi Miyazawa; Takahide Yamaguchi; Toshinori Ozaki; Hiroyuki Okazaki; Yoshihiko Takano

doi:10.1016/j.materresbull.2012.10.033

Preparation and superconductivity of potassium-doped fullerene nanowhiskers

Hiroyuki Takeya, Ryoei Kato, Takatsugu Wakahara, Kun'Ichi Miyazawa, Takahide Yamaguchi, Toshinori Ozaki, Hiroyuki Okazaki, Yoshihiko Takano

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

23 Citations (Scopus)

Abstract

Superconductivity at 17 K was observed in a potassium (K)-doped fullerene nanowhisker (K-C60NW). The superconducting volume fraction of a full shielding volume was as high as 80% in the nominal composition of K3.3C60NW, while that of K-doped fullerene powder was less than 1% under the same heating condition at 200 °C. We report the superconducting behaviors of our newly synthesized K3.3C60NWs, such as the applied field dependence of magnetization and the critical current density of 3 × 10⁵ A/cm² at 5 K under 50 kOe, in comparison to those of K-doped fullerene powders.

Original language	English
Pages (from-to)	343-345
Number of pages	3
Journal	Materials Research Bulletin
Volume	48
Issue number	2
DOIs	https://doi.org/10.1016/j.materresbull.2012.10.033
Publication status	Published - 2013 Feb

Keywords

A. Fullerenes
A. Superconductors
D. Defects

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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10.1016/j.materresbull.2012.10.033

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title = "Preparation and superconductivity of potassium-doped fullerene nanowhiskers",

abstract = "Superconductivity at 17 K was observed in a potassium (K)-doped fullerene nanowhisker (K-C60NW). The superconducting volume fraction of a full shielding volume was as high as 80% in the nominal composition of K3.3C60NW, while that of K-doped fullerene powder was less than 1% under the same heating condition at 200 °C. We report the superconducting behaviors of our newly synthesized K3.3C60NWs, such as the applied field dependence of magnetization and the critical current density of 3 × 105 A/cm2 at 5 K under 50 kOe, in comparison to those of K-doped fullerene powders.",

keywords = "A. Fullerenes, A. Superconductors, D. Defects",

author = "Hiroyuki Takeya and Ryoei Kato and Takatsugu Wakahara and Kun'Ichi Miyazawa and Takahide Yamaguchi and Toshinori Ozaki and Hiroyuki Okazaki and Yoshihiko Takano",

note = "Funding Information: The authors are grateful to the Advanced Low Carbon Technology R&D Program (ALCA) of the Japan Science and Technology Agency for partial financial support. Partial support received from the Japan Society for the Promotion of Science is also acknowledged.",

year = "2013",

month = feb,

doi = "10.1016/j.materresbull.2012.10.033",

language = "English",

volume = "48",

pages = "343--345",

journal = "Materials Research Bulletin",

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T1 - Preparation and superconductivity of potassium-doped fullerene nanowhiskers

AU - Takeya, Hiroyuki

AU - Kato, Ryoei

AU - Wakahara, Takatsugu

AU - Miyazawa, Kun'Ichi

AU - Yamaguchi, Takahide

AU - Ozaki, Toshinori

AU - Okazaki, Hiroyuki

AU - Takano, Yoshihiko

N1 - Funding Information: The authors are grateful to the Advanced Low Carbon Technology R&D Program (ALCA) of the Japan Science and Technology Agency for partial financial support. Partial support received from the Japan Society for the Promotion of Science is also acknowledged.

PY - 2013/2

Y1 - 2013/2

N2 - Superconductivity at 17 K was observed in a potassium (K)-doped fullerene nanowhisker (K-C60NW). The superconducting volume fraction of a full shielding volume was as high as 80% in the nominal composition of K3.3C60NW, while that of K-doped fullerene powder was less than 1% under the same heating condition at 200 °C. We report the superconducting behaviors of our newly synthesized K3.3C60NWs, such as the applied field dependence of magnetization and the critical current density of 3 × 105 A/cm2 at 5 K under 50 kOe, in comparison to those of K-doped fullerene powders.

AB - Superconductivity at 17 K was observed in a potassium (K)-doped fullerene nanowhisker (K-C60NW). The superconducting volume fraction of a full shielding volume was as high as 80% in the nominal composition of K3.3C60NW, while that of K-doped fullerene powder was less than 1% under the same heating condition at 200 °C. We report the superconducting behaviors of our newly synthesized K3.3C60NWs, such as the applied field dependence of magnetization and the critical current density of 3 × 105 A/cm2 at 5 K under 50 kOe, in comparison to those of K-doped fullerene powders.

KW - A. Fullerenes

KW - A. Superconductors

KW - D. Defects

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U2 - 10.1016/j.materresbull.2012.10.033

DO - 10.1016/j.materresbull.2012.10.033

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SN - 0025-5408

VL - 48

SP - 343

EP - 345

JO - Materials Research Bulletin

JF - Materials Research Bulletin

IS - 2

ER -

Preparation and superconductivity of potassium-doped fullerene nanowhiskers

Abstract

Keywords

ASJC Scopus subject areas

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