Effects of addition of oxide particles on formation and superconducting properties of the Bi-2212 phase

Masahiro Nagae; Jun Takada; Yoshihiro Kusano

doi:10.2497/jjspm.43.183

Effects of addition of oxide particles on formation and superconducting properties of the Bi-2212 phase

Masahiro Nagae, Jun Takada, Yoshihiro Kusano

Faculty of Engineering

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

Abstract

Bi-2212/Ag tape samples with finely dispersed oxide(α-Al₂O₃ or MgO) particles were prepared by the partial melt-solidification technique. The formation and superconducting properties of the tape samples have been studied in relation to microstructure. In case of α-Al₂O₃ particles addition, as the oxide additive content increased, the Ic value at 77K and OT decreased remarkably because of reaction between α-Al₂O₃ and 2212 phase. On the other hand, MgO particles were uniformly dispersed in the Bi-2212 matrix without any reaction between 2212 phase and MgO, so that Ic almost unchanged. Isothermal magnetic hysteresis loop of MgO added samples was larger than that of non-added samples. These results suggested that MgO particle addition was effective for improvement in the flux pinning properties of the Bi-2212 phase.

Original language	English
Pages (from-to)	183-186
Number of pages	4
Journal	Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
Volume	43
Issue number	2
DOIs	https://doi.org/10.2497/jjspm.43.183
Publication status	Published - Feb 1996

Keywords

Bi-2212/Ag tape
Hysteresis loop
MgO particle addition
Partial melt-solidification technique
Particle size effect

ASJC Scopus subject areas

Mechanical Engineering
Industrial and Manufacturing Engineering
Metals and Alloys
Materials Chemistry

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10.2497/jjspm.43.183

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title = "Effects of addition of oxide particles on formation and superconducting properties of the Bi-2212 phase",

abstract = "Bi-2212/Ag tape samples with finely dispersed oxide(α-Al2O3 or MgO) particles were prepared by the partial melt-solidification technique. The formation and superconducting properties of the tape samples have been studied in relation to microstructure. In case of α-Al2O3 particles addition, as the oxide additive content increased, the Ic value at 77K and OT decreased remarkably because of reaction between α-Al2O3 and 2212 phase. On the other hand, MgO particles were uniformly dispersed in the Bi-2212 matrix without any reaction between 2212 phase and MgO, so that Ic almost unchanged. Isothermal magnetic hysteresis loop of MgO added samples was larger than that of non-added samples. These results suggested that MgO particle addition was effective for improvement in the flux pinning properties of the Bi-2212 phase.",

keywords = "Bi-2212/Ag tape, Hysteresis loop, MgO particle addition, Partial melt-solidification technique, Particle size effect",

author = "Masahiro Nagae and Jun Takada and Yoshihiro Kusano",

year = "1996",

month = feb,

doi = "10.2497/jjspm.43.183",

language = "English",

volume = "43",

pages = "183--186",

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

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T1 - Effects of addition of oxide particles on formation and superconducting properties of the Bi-2212 phase

AU - Nagae, Masahiro

AU - Takada, Jun

AU - Kusano, Yoshihiro

PY - 1996/2

Y1 - 1996/2

N2 - Bi-2212/Ag tape samples with finely dispersed oxide(α-Al2O3 or MgO) particles were prepared by the partial melt-solidification technique. The formation and superconducting properties of the tape samples have been studied in relation to microstructure. In case of α-Al2O3 particles addition, as the oxide additive content increased, the Ic value at 77K and OT decreased remarkably because of reaction between α-Al2O3 and 2212 phase. On the other hand, MgO particles were uniformly dispersed in the Bi-2212 matrix without any reaction between 2212 phase and MgO, so that Ic almost unchanged. Isothermal magnetic hysteresis loop of MgO added samples was larger than that of non-added samples. These results suggested that MgO particle addition was effective for improvement in the flux pinning properties of the Bi-2212 phase.

AB - Bi-2212/Ag tape samples with finely dispersed oxide(α-Al2O3 or MgO) particles were prepared by the partial melt-solidification technique. The formation and superconducting properties of the tape samples have been studied in relation to microstructure. In case of α-Al2O3 particles addition, as the oxide additive content increased, the Ic value at 77K and OT decreased remarkably because of reaction between α-Al2O3 and 2212 phase. On the other hand, MgO particles were uniformly dispersed in the Bi-2212 matrix without any reaction between 2212 phase and MgO, so that Ic almost unchanged. Isothermal magnetic hysteresis loop of MgO added samples was larger than that of non-added samples. These results suggested that MgO particle addition was effective for improvement in the flux pinning properties of the Bi-2212 phase.

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Effects of addition of oxide particles on formation and superconducting properties of the Bi-2212 phase

Abstract

Keywords

ASJC Scopus subject areas

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