Li doping into the Pb substituted Bi-2212 phase by electrochemical method

Hirofumi Joko; Masashi Fujiwara; Makoto Nakanishi; Tatsuo Fujii; Jun Takada; Yoshihiro Kusano; Yasuo Takeda; Yasunori Ikeda; Mikio Takano; Yoshichika Bando

doi:10.2497/jjspm.44.792

Li doping into the Pb substituted Bi-2212 phase by electrochemical method

Hirofumi Joko, Masashi Fujiwara, Makoto Nakanishi, Tatsuo Fujii, Jun Takada, Yoshihiro Kusano, Yasuo Takeda, Yasunori Ikeda, Mikio Takano, Yoshichika Bando

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

Abstract

Effects of electrochemical Li-doping to the Pb-substituted Bi-2212 phase on its structural and superconducting properties were studied. Bi_1.8Pb_0.2Sr_1.5Ca_1.5Cu ₂O_z was lithiated through an electrochemical method at constant applied potential at room temperature. In the electrochemically Li-doping samples, the original crystal symmetry, tetragonal structure, was maintained and any secondary phase was not formed. The amount of doped Li for Bi_1.8Pb_0.2Sr_1.5Ca_1.5Cu ₂O_z was much lager than that for Bi₂Sr_1.5Ca_1.5Cu₂O_z at the same reaction periods. Analysed maximum Li content y for Li_yBi_1.8Pb_0.2Sr_1.5Ca _1.5Cu₂O_z was found to be 0.53, which was remarkably high in comparison with y=0.37 for Li_yBi₂Sr_1.5Ca_1.5Cu₂O _z. The lattice parameters (a,c) of Li_yBi_1.8Pb_0.2Sr_1.5Ca _1.5Cu₂O_z increased continuously in a similar trend to that of Li_yBi₂Sr_1.5Ca_1.5Cu₂O _z. Tc remains almost constant around 85K as the Li content y increased.

Original language	English
Pages (from-to)	792-796
Number of pages	5
Journal	Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
Volume	44
Issue number	8
DOIs	https://doi.org/10.2497/jjspm.44.792
Publication status	Published - Aug 1997

Keywords

Electrochemical reaction
Lattice parameter
Li-doping
Pb-substituted 2212 phase
Tc

ASJC Scopus subject areas

Mechanical Engineering
Industrial and Manufacturing Engineering
Metals and Alloys
Materials Chemistry

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10.2497/jjspm.44.792

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title = "Li doping into the Pb substituted Bi-2212 phase by electrochemical method",

abstract = "Effects of electrochemical Li-doping to the Pb-substituted Bi-2212 phase on its structural and superconducting properties were studied. Bi1.8Pb0.2Sr1.5Ca1.5Cu 2Oz was lithiated through an electrochemical method at constant applied potential at room temperature. In the electrochemically Li-doping samples, the original crystal symmetry, tetragonal structure, was maintained and any secondary phase was not formed. The amount of doped Li for Bi1.8Pb0.2Sr1.5Ca1.5Cu 2Oz was much lager than that for Bi2Sr1.5Ca1.5Cu2Oz at the same reaction periods. Analysed maximum Li content y for LiyBi1.8Pb0.2Sr1.5Ca 1.5Cu2Oz was found to be 0.53, which was remarkably high in comparison with y=0.37 for LiyBi2Sr1.5Ca1.5Cu2O z. The lattice parameters (a,c) of LiyBi1.8Pb0.2Sr1.5Ca 1.5Cu2Oz increased continuously in a similar trend to that of LiyBi2Sr1.5Ca1.5Cu2O z. Tc remains almost constant around 85K as the Li content y increased.",

keywords = "Electrochemical reaction, Lattice parameter, Li-doping, Pb-substituted 2212 phase, Tc",

author = "Hirofumi Joko and Masashi Fujiwara and Makoto Nakanishi and Tatsuo Fujii and Jun Takada and Yoshihiro Kusano and Yasuo Takeda and Yasunori Ikeda and Mikio Takano and Yoshichika Bando",

year = "1997",

month = aug,

doi = "10.2497/jjspm.44.792",

language = "English",

volume = "44",

pages = "792--796",

journal = "Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy",

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publisher = "Funtai Funamtsu Yakin Kyokai/Japan Soc. of Powder Metallurgy",

number = "8",

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TY - JOUR

T1 - Li doping into the Pb substituted Bi-2212 phase by electrochemical method

AU - Joko, Hirofumi

AU - Fujiwara, Masashi

AU - Nakanishi, Makoto

AU - Fujii, Tatsuo

AU - Takada, Jun

AU - Kusano, Yoshihiro

AU - Takeda, Yasuo

AU - Ikeda, Yasunori

AU - Takano, Mikio

AU - Bando, Yoshichika

PY - 1997/8

Y1 - 1997/8

N2 - Effects of electrochemical Li-doping to the Pb-substituted Bi-2212 phase on its structural and superconducting properties were studied. Bi1.8Pb0.2Sr1.5Ca1.5Cu 2Oz was lithiated through an electrochemical method at constant applied potential at room temperature. In the electrochemically Li-doping samples, the original crystal symmetry, tetragonal structure, was maintained and any secondary phase was not formed. The amount of doped Li for Bi1.8Pb0.2Sr1.5Ca1.5Cu 2Oz was much lager than that for Bi2Sr1.5Ca1.5Cu2Oz at the same reaction periods. Analysed maximum Li content y for LiyBi1.8Pb0.2Sr1.5Ca 1.5Cu2Oz was found to be 0.53, which was remarkably high in comparison with y=0.37 for LiyBi2Sr1.5Ca1.5Cu2O z. The lattice parameters (a,c) of LiyBi1.8Pb0.2Sr1.5Ca 1.5Cu2Oz increased continuously in a similar trend to that of LiyBi2Sr1.5Ca1.5Cu2O z. Tc remains almost constant around 85K as the Li content y increased.

AB - Effects of electrochemical Li-doping to the Pb-substituted Bi-2212 phase on its structural and superconducting properties were studied. Bi1.8Pb0.2Sr1.5Ca1.5Cu 2Oz was lithiated through an electrochemical method at constant applied potential at room temperature. In the electrochemically Li-doping samples, the original crystal symmetry, tetragonal structure, was maintained and any secondary phase was not formed. The amount of doped Li for Bi1.8Pb0.2Sr1.5Ca1.5Cu 2Oz was much lager than that for Bi2Sr1.5Ca1.5Cu2Oz at the same reaction periods. Analysed maximum Li content y for LiyBi1.8Pb0.2Sr1.5Ca 1.5Cu2Oz was found to be 0.53, which was remarkably high in comparison with y=0.37 for LiyBi2Sr1.5Ca1.5Cu2O z. The lattice parameters (a,c) of LiyBi1.8Pb0.2Sr1.5Ca 1.5Cu2Oz increased continuously in a similar trend to that of LiyBi2Sr1.5Ca1.5Cu2O z. Tc remains almost constant around 85K as the Li content y increased.

KW - Electrochemical reaction

KW - Lattice parameter

KW - Li-doping

KW - Pb-substituted 2212 phase

KW - Tc

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ER -

Li doping into the Pb substituted Bi-2212 phase by electrochemical method

Abstract

Keywords

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