Synthesis of Ca-doped Y124 Superconductor by Polymerized Complex Method Followed by O2-HIP Technique and Discussion of Ca-site Selectivity in the Crystal Structure.

Masato Kakihana; Shigeru Nishio; Masatomo Yashima; Hiromasa Mazaki; Hiroshi Yasuoka; Masahiro Yoshimura; Pedro Berastegui

doi:10.2497/jjspm.41.361

Synthesis of Ca-doped Y124 Superconductor by Polymerized Complex Method Followed by O2-HIP Technique and Discussion of Ca-site Selectivity in the Crystal Structure.

Masato Kakihana
, Shigeru Nishio
, Masatomo Yashima
, Hiromasa Mazaki
, Hiroshi Yasuoka
, Masahiro Yoshimura
, Pedro Berastegui

Department of Materials Science and Engineering

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

Abstract

We report Ca-site selectivity in the crystal structure of Y124(YBazCu₄O₈) superconductor. We sucsessfiilly synthesized superconducting samples with nominal compositions of (Y1-xCax)Ba2Cu₆O₈ (series-A: x=0.0, 0.05, 0.1) and Y(Ba2-yCa_y)Cu₄O₈) (series-B: y=0.0, 0.05, 0.1) by polymerized complex method followed by O2-IIIP technique. Neutron powder diffraction measurement has shown excess impurities in propotion to Ca-content in series-B. An extension of A Tc(10-90%) was also observed in series-B by AC-magnetic susceptibility measurement It is suggested that the formation of these impurities in series-B originate from a discrepancy in idea] composion, that is, (Y₁-_xCa_x)Ba₂Cu₄O₈ (seires-A). We conclude that Ca-atom preferentially substitutes Y-atom in the 124 structure for these reasons.

Original language	English
Pages (from-to)	361-364
Number of pages	4
Journal	journal of the japan society of powder and powder metallurgy
Volume	41
Issue number	4
DOIs	https://doi.org/10.2497/jjspm.41.361
Publication status	Published - 1994 Feb 1

All Science Journal Classification (ASJC) codes

Mechanical Engineering
Industrial and Manufacturing Engineering
Metals and Alloys
Materials Chemistry

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Kakihana, M., Nishio, S., Yashima, M., Mazaki, H., Yasuoka, H., Yoshimura, M., & Berastegui, P. (1994). Synthesis of Ca-doped Y124 Superconductor by Polymerized Complex Method Followed by O2-HIP Technique and Discussion of Ca-site Selectivity in the Crystal Structure. journal of the japan society of powder and powder metallurgy, 41(4), 361-364. https://doi.org/10.2497/jjspm.41.361

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title = "Synthesis of Ca-doped Y124 Superconductor by Polymerized Complex Method Followed by O2-HIP Technique and Discussion of Ca-site Selectivity in the Crystal Structure.",

abstract = "We report Ca-site selectivity in the crystal structure of Y124(YBazCu4O8) superconductor. We sucsessfiilly synthesized superconducting samples with nominal compositions of (Y1-xCax)Ba2Cu6O8 (series-A: x=0.0, 0.05, 0.1) and Y(Ba2-yCay)Cu4O8) (series-B: y=0.0, 0.05, 0.1) by polymerized complex method followed by O2-IIIP technique. Neutron powder diffraction measurement has shown excess impurities in propotion to Ca-content in series-B. An extension of A Tc(10-90\%) was also observed in series-B by AC-magnetic susceptibility measurement It is suggested that the formation of these impurities in series-B originate from a discrepancy in idea] composion, that is, (Y1-xCax)Ba2Cu4O8 (seires-A). We conclude that Ca-atom preferentially substitutes Y-atom in the 124 structure for these reasons.",

author = "Masato Kakihana and Shigeru Nishio and Masatomo Yashima and Hiromasa Mazaki and Hiroshi Yasuoka and Masahiro Yoshimura and Pedro Berastegui",

year = "1994",

month = feb,

day = "1",

doi = "10.2497/jjspm.41.361",

language = "English",

volume = "41",

pages = "361--364",

journal = "journal of the japan society of powder and powder metallurgy",

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number = "4",

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Kakihana, M, Nishio, S, Yashima, M, Mazaki, H, Yasuoka, H, Yoshimura, M & Berastegui, P 1994, 'Synthesis of Ca-doped Y124 Superconductor by Polymerized Complex Method Followed by O2-HIP Technique and Discussion of Ca-site Selectivity in the Crystal Structure.', journal of the japan society of powder and powder metallurgy, vol. 41, no. 4, pp. 361-364. https://doi.org/10.2497/jjspm.41.361

Synthesis of Ca-doped Y124 Superconductor by Polymerized Complex Method Followed by O2-HIP Technique and Discussion of Ca-site Selectivity in the Crystal Structure. / Kakihana, Masato; Nishio, Shigeru; Yashima, Masatomo et al.
In: journal of the japan society of powder and powder metallurgy, Vol. 41, No. 4, 01.02.1994, p. 361-364.

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

TY - JOUR

T1 - Synthesis of Ca-doped Y124 Superconductor by Polymerized Complex Method Followed by O2-HIP Technique and Discussion of Ca-site Selectivity in the Crystal Structure.

AU - Kakihana, Masato

AU - Nishio, Shigeru

AU - Yashima, Masatomo

AU - Mazaki, Hiromasa

AU - Yasuoka, Hiroshi

AU - Yoshimura, Masahiro

AU - Berastegui, Pedro

PY - 1994/2/1

Y1 - 1994/2/1

N2 - We report Ca-site selectivity in the crystal structure of Y124(YBazCu4O8) superconductor. We sucsessfiilly synthesized superconducting samples with nominal compositions of (Y1-xCax)Ba2Cu6O8 (series-A: x=0.0, 0.05, 0.1) and Y(Ba2-yCay)Cu4O8) (series-B: y=0.0, 0.05, 0.1) by polymerized complex method followed by O2-IIIP technique. Neutron powder diffraction measurement has shown excess impurities in propotion to Ca-content in series-B. An extension of A Tc(10-90%) was also observed in series-B by AC-magnetic susceptibility measurement It is suggested that the formation of these impurities in series-B originate from a discrepancy in idea] composion, that is, (Y1-xCax)Ba2Cu4O8 (seires-A). We conclude that Ca-atom preferentially substitutes Y-atom in the 124 structure for these reasons.

AB - We report Ca-site selectivity in the crystal structure of Y124(YBazCu4O8) superconductor. We sucsessfiilly synthesized superconducting samples with nominal compositions of (Y1-xCax)Ba2Cu6O8 (series-A: x=0.0, 0.05, 0.1) and Y(Ba2-yCay)Cu4O8) (series-B: y=0.0, 0.05, 0.1) by polymerized complex method followed by O2-IIIP technique. Neutron powder diffraction measurement has shown excess impurities in propotion to Ca-content in series-B. An extension of A Tc(10-90%) was also observed in series-B by AC-magnetic susceptibility measurement It is suggested that the formation of these impurities in series-B originate from a discrepancy in idea] composion, that is, (Y1-xCax)Ba2Cu4O8 (seires-A). We conclude that Ca-atom preferentially substitutes Y-atom in the 124 structure for these reasons.

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JO - journal of the japan society of powder and powder metallurgy

JF - journal of the japan society of powder and powder metallurgy

IS - 4

ER -

Synthesis of Ca-doped Y124 Superconductor by Polymerized Complex Method Followed by O2-HIP Technique and Discussion of Ca-site Selectivity in the Crystal Structure.

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