Introduction of flux pinning center in sintered Bi-2223 superconductors by 290 MeV/n 40Ar irradiation

Takeyuki Kikuchi; Makoto Nakanishi; Masahiro Nagae; Yoshihiro Kusano; Tatsuo Fujii; Jun Takada; Nakahiro Yasuda; Takeshi Murakami

doi:10.2497/jjspm.46.994

Introduction of flux pinning center in sintered Bi-2223 superconductors by 290 MeV/n ⁴⁰Ar irradiation

Takeyuki Kikuchi, Makoto Nakanishi, Masahiro Nagae, Yoshihiro Kusano, Tatsuo Fujii, Jun Takada, Nakahiro Yasuda, Takeshi Murakami

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

Abstract

Bi-2223 bulk superconductors were irradiated with 290MeV/n ⁴⁰Ar¹⁸⁺ ions. ⁴⁰Ar¹⁸⁺ irradiation effects on flux pinning of Bi-2223, which were estimated as ΔM from magnetic hysteresis loops measured by SQUID and VSM, were discussed. Irradiated samples had enlarged magnetic hysteresis loops than unirradiated samples. Moreover, the increment of ΔM depended on depth from the irradiation surface. Microstructure of irradiated samples were observed by high-resolution transmission electron microscopy (HR-TEM). However, irradiation defects such as the columnar defects were not observed in these samples.

Original language	English
Pages (from-to)	994-998
Number of pages	5
Journal	Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
Volume	46
Issue number	9
DOIs	https://doi.org/10.2497/jjspm.46.994
Publication status	Published - Sept 1999

ASJC Scopus subject areas

Mechanical Engineering
Industrial and Manufacturing Engineering
Metals and Alloys
Materials Chemistry

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title = "Introduction of flux pinning center in sintered Bi-2223 superconductors by 290 MeV/n 40Ar irradiation",

abstract = "Bi-2223 bulk superconductors were irradiated with 290MeV/n 40Ar18+ ions. 40Ar18+ irradiation effects on flux pinning of Bi-2223, which were estimated as ΔM from magnetic hysteresis loops measured by SQUID and VSM, were discussed. Irradiated samples had enlarged magnetic hysteresis loops than unirradiated samples. Moreover, the increment of ΔM depended on depth from the irradiation surface. Microstructure of irradiated samples were observed by high-resolution transmission electron microscopy (HR-TEM). However, irradiation defects such as the columnar defects were not observed in these samples.",

author = "Takeyuki Kikuchi and Makoto Nakanishi and Masahiro Nagae and Yoshihiro Kusano and Tatsuo Fujii and Jun Takada and Nakahiro Yasuda and Takeshi Murakami",

year = "1999",

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doi = "10.2497/jjspm.46.994",

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T1 - Introduction of flux pinning center in sintered Bi-2223 superconductors by 290 MeV/n 40Ar irradiation

AU - Kikuchi, Takeyuki

AU - Nakanishi, Makoto

AU - Nagae, Masahiro

AU - Kusano, Yoshihiro

AU - Fujii, Tatsuo

AU - Takada, Jun

AU - Yasuda, Nakahiro

AU - Murakami, Takeshi

PY - 1999/9

Y1 - 1999/9

N2 - Bi-2223 bulk superconductors were irradiated with 290MeV/n 40Ar18+ ions. 40Ar18+ irradiation effects on flux pinning of Bi-2223, which were estimated as ΔM from magnetic hysteresis loops measured by SQUID and VSM, were discussed. Irradiated samples had enlarged magnetic hysteresis loops than unirradiated samples. Moreover, the increment of ΔM depended on depth from the irradiation surface. Microstructure of irradiated samples were observed by high-resolution transmission electron microscopy (HR-TEM). However, irradiation defects such as the columnar defects were not observed in these samples.

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Introduction of flux pinning center in sintered Bi-2223 superconductors by 290 MeV/n ⁴⁰Ar irradiation

Abstract

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