Microstructure and trapped field of Al-doped GdBCO-Ag bulk superconductors

D. Volochova; P. Diko; S. Piovarci; M. Kalmanova; K. Iida; B. Holzapfel; A. E. Carrillo; B. Bozzo; X. Granados

doi:10.1088/0953-2048/25/2/025023

Microstructure and trapped field of Al-doped GdBCO-Ag bulk superconductors

D. Volochova, P. Diko, S. Piovarci, M. Kalmanova, K. Iida, B. Holzapfel, A. E. Carrillo, B. Bozzo, X. Granados

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

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Abstract

The effect of Gd 2Ba 6Al 4O 15 powder addition on microstructure, field trapping capability and critical transition temperature, T c, of GdBCOAg superconductors grown in air is reported. Single-grain GdBCO-Ag bulk superconductors with different amounts of Gd 2Ba 6Al 4O 15powder were fabricated by the top seeded melt growth process. Addition of 0.3wt% Gd 2Ba 6Al 4O 15 powder increased the maximum trapped field value, B Zmax. Microstructure analysis confirmed that, up to 1.0wt% addition of this powder, Al-based phase is not formed and Al is supposed to substitute Cu in the GdBa 2Cu 3O 7-δ matrix. Addition of 2.0wt% Gd 2Ba 6Al 4O 15 powder leads to formation of Pt,Al-based phase, which indicates that the solubility limit of Al in the studied system was exceeded. The critical transition temperature, T c, decreases monotonically with increasing Gd 2Ba 6Al 4O 15 powder addition. © 2012 IOP Publishing Ltd.

Original language	English
Article number	025023
Journal	Superconductor Science and Technology
Volume	25
Issue number	2
DOIs	https://doi.org/10.1088/0953-2048/25/2/025023
Publication status	Published - 1 Feb 2012

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title = "Microstructure and trapped field of Al-doped GdBCO-Ag bulk superconductors",

abstract = "The effect of Gd 2Ba 6Al 4O 15 powder addition on microstructure, field trapping capability and critical transition temperature, T c, of GdBCOAg superconductors grown in air is reported. Single-grain GdBCO-Ag bulk superconductors with different amounts of Gd 2Ba 6Al 4O 15powder were fabricated by the top seeded melt growth process. Addition of 0.3wt% Gd 2Ba 6Al 4O 15 powder increased the maximum trapped field value, B Zmax. Microstructure analysis confirmed that, up to 1.0wt% addition of this powder, Al-based phase is not formed and Al is supposed to substitute Cu in the GdBa 2Cu 3O 7-δ matrix. Addition of 2.0wt% Gd 2Ba 6Al 4O 15 powder leads to formation of Pt,Al-based phase, which indicates that the solubility limit of Al in the studied system was exceeded. The critical transition temperature, T c, decreases monotonically with increasing Gd 2Ba 6Al 4O 15 powder addition. {\textcopyright} 2012 IOP Publishing Ltd.",

author = "D. Volochova and P. Diko and S. Piovarci and M. Kalmanova and K. Iida and B. Holzapfel and Carrillo, {A. E.} and B. Bozzo and X. Granados",

year = "2012",

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doi = "10.1088/0953-2048/25/2/025023",

language = "English",

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T1 - Microstructure and trapped field of Al-doped GdBCO-Ag bulk superconductors

AU - Volochova, D.

AU - Diko, P.

AU - Piovarci, S.

AU - Kalmanova, M.

AU - Iida, K.

AU - Holzapfel, B.

AU - Carrillo, A. E.

AU - Bozzo, B.

AU - Granados, X.

PY - 2012/2/1

Y1 - 2012/2/1

N2 - The effect of Gd 2Ba 6Al 4O 15 powder addition on microstructure, field trapping capability and critical transition temperature, T c, of GdBCOAg superconductors grown in air is reported. Single-grain GdBCO-Ag bulk superconductors with different amounts of Gd 2Ba 6Al 4O 15powder were fabricated by the top seeded melt growth process. Addition of 0.3wt% Gd 2Ba 6Al 4O 15 powder increased the maximum trapped field value, B Zmax. Microstructure analysis confirmed that, up to 1.0wt% addition of this powder, Al-based phase is not formed and Al is supposed to substitute Cu in the GdBa 2Cu 3O 7-δ matrix. Addition of 2.0wt% Gd 2Ba 6Al 4O 15 powder leads to formation of Pt,Al-based phase, which indicates that the solubility limit of Al in the studied system was exceeded. The critical transition temperature, T c, decreases monotonically with increasing Gd 2Ba 6Al 4O 15 powder addition. © 2012 IOP Publishing Ltd.

AB - The effect of Gd 2Ba 6Al 4O 15 powder addition on microstructure, field trapping capability and critical transition temperature, T c, of GdBCOAg superconductors grown in air is reported. Single-grain GdBCO-Ag bulk superconductors with different amounts of Gd 2Ba 6Al 4O 15powder were fabricated by the top seeded melt growth process. Addition of 0.3wt% Gd 2Ba 6Al 4O 15 powder increased the maximum trapped field value, B Zmax. Microstructure analysis confirmed that, up to 1.0wt% addition of this powder, Al-based phase is not formed and Al is supposed to substitute Cu in the GdBa 2Cu 3O 7-δ matrix. Addition of 2.0wt% Gd 2Ba 6Al 4O 15 powder leads to formation of Pt,Al-based phase, which indicates that the solubility limit of Al in the studied system was exceeded. The critical transition temperature, T c, decreases monotonically with increasing Gd 2Ba 6Al 4O 15 powder addition. © 2012 IOP Publishing Ltd.

U2 - 10.1088/0953-2048/25/2/025023

DO - 10.1088/0953-2048/25/2/025023

M3 - Article

VL - 25

JO - Superconductor Science and Technology

JF - Superconductor Science and Technology

SN - 0953-2048

IS - 2

M1 - 025023

ER -

Microstructure and trapped field of Al-doped GdBCO-Ag bulk superconductors

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