Initial composition dependence of the critical current density in filamentary NSG123 superconductors

Y. Ikebe; E. Ban; Y. Matsuoka; G. Nishijima; Kazuo Watanabe

doi:10.1016/j.physc.2008.05.077

Initial composition dependence of the critical current density in filamentary NSG123 superconductors

Y. Ikebe, E. Ban, Y. Matsuoka, G. Nishijima, Kazuo Watanabe

High Field Laboratory for Superconducting Materials

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

Abstract

The effect of the starting composition on the superconducting properties for ternary system (Nd, Sm, Gd)-Ba-Cu-O filaments was systematically investigated. The filaments with the composition of (Nd_0.33,Sm_0.33,Gd_0.33)_1.18Ba _2.12Cu_3.09O_y (sample A), (Nd_0.50,Sm_0.25,Gd_0.25)_1.18Ba _2.12Cu_3.09O_y (sample B), (Nd_0.25,Sm_0.50,Gd_0.25)_1.18Ba _2.12Cu_3.09O_y (sample C) and (Nd_0.25,Sm_0.25,Gd_0.50)_1.18Ba _2.12Cu_3.09O_y (sample D) were prepared by a solution spinning method. All samples partially melted at temperature range of 1030-1080 °C in flowing 0.1% O₂ + Ar exhibited J_c value higher than 10⁴ A/cm² at 77.3 K and self-field. Among these samples, the best transport J_c value of 7.2 × 10⁴ A/cm² was attained in sample B with Nd-rich composition. The field dependence of transport J_c value was also examined at various temperatures between 77.3 K and 90 K in applied magnetic fields up to 17 T. In the case of samples A, the J_c value gradually decreased with increasing the applied magnetic field, and the J_c value of 2.4 × 10³ A/cm² at 77.3 K was maintained up to high magnetic fields of 17 T. On the contrary, the J_c value of sample B decreased with increasing the applied magnetic field and the superconductivity disappeared at about 15 T. It was found that the three element ratio in NSG123 contributed to flux pinning in a different manner and affected in J_c behavior in magnetic field.

Original language	English
Pages (from-to)	1583-1586
Number of pages	4
Journal	Physica C: Superconductivity and its applications
Volume	468
Issue number	15-20
DOIs	https://doi.org/10.1016/j.physc.2008.05.077
Publication status	Published - 2008 Sept 15

Keywords

Critical current density
Filamentary NSG123 superconductor
Magnetic field behavior

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Energy Engineering and Power Technology
Electrical and Electronic Engineering

Access to Document

10.1016/j.physc.2008.05.077

Cite this

@article{782227c83ae447baaf430e4cf8bcb34f,

title = "Initial composition dependence of the critical current density in filamentary NSG123 superconductors",

abstract = "The effect of the starting composition on the superconducting properties for ternary system (Nd, Sm, Gd)-Ba-Cu-O filaments was systematically investigated. The filaments with the composition of (Nd0.33,Sm0.33,Gd0.33)1.18Ba 2.12Cu3.09Oy (sample A), (Nd0.50,Sm0.25,Gd0.25)1.18Ba 2.12Cu3.09Oy (sample B), (Nd0.25,Sm0.50,Gd0.25)1.18Ba 2.12Cu3.09Oy (sample C) and (Nd0.25,Sm0.25,Gd0.50)1.18Ba 2.12Cu3.09Oy (sample D) were prepared by a solution spinning method. All samples partially melted at temperature range of 1030-1080 °C in flowing 0.1% O2 + Ar exhibited Jc value higher than 104 A/cm2 at 77.3 K and self-field. Among these samples, the best transport Jc value of 7.2 × 104 A/cm2 was attained in sample B with Nd-rich composition. The field dependence of transport Jc value was also examined at various temperatures between 77.3 K and 90 K in applied magnetic fields up to 17 T. In the case of samples A, the Jc value gradually decreased with increasing the applied magnetic field, and the Jc value of 2.4 × 103 A/cm2 at 77.3 K was maintained up to high magnetic fields of 17 T. On the contrary, the Jc value of sample B decreased with increasing the applied magnetic field and the superconductivity disappeared at about 15 T. It was found that the three element ratio in NSG123 contributed to flux pinning in a different manner and affected in Jc behavior in magnetic field.",

keywords = "Critical current density, Filamentary NSG123 superconductor, Magnetic field behavior",

author = "Y. Ikebe and E. Ban and Y. Matsuoka and G. Nishijima and Kazuo Watanabe",

year = "2008",

month = sep,

day = "15",

doi = "10.1016/j.physc.2008.05.077",

language = "English",

volume = "468",

pages = "1583--1586",

journal = "Physica C: Superconductivity and its Applications",

issn = "0921-4534",

publisher = "Elsevier",

number = "15-20",

}

TY - JOUR

T1 - Initial composition dependence of the critical current density in filamentary NSG123 superconductors

AU - Ikebe, Y.

AU - Ban, E.

AU - Matsuoka, Y.

AU - Nishijima, G.

AU - Watanabe, Kazuo

PY - 2008/9/15

Y1 - 2008/9/15

N2 - The effect of the starting composition on the superconducting properties for ternary system (Nd, Sm, Gd)-Ba-Cu-O filaments was systematically investigated. The filaments with the composition of (Nd0.33,Sm0.33,Gd0.33)1.18Ba 2.12Cu3.09Oy (sample A), (Nd0.50,Sm0.25,Gd0.25)1.18Ba 2.12Cu3.09Oy (sample B), (Nd0.25,Sm0.50,Gd0.25)1.18Ba 2.12Cu3.09Oy (sample C) and (Nd0.25,Sm0.25,Gd0.50)1.18Ba 2.12Cu3.09Oy (sample D) were prepared by a solution spinning method. All samples partially melted at temperature range of 1030-1080 °C in flowing 0.1% O2 + Ar exhibited Jc value higher than 104 A/cm2 at 77.3 K and self-field. Among these samples, the best transport Jc value of 7.2 × 104 A/cm2 was attained in sample B with Nd-rich composition. The field dependence of transport Jc value was also examined at various temperatures between 77.3 K and 90 K in applied magnetic fields up to 17 T. In the case of samples A, the Jc value gradually decreased with increasing the applied magnetic field, and the Jc value of 2.4 × 103 A/cm2 at 77.3 K was maintained up to high magnetic fields of 17 T. On the contrary, the Jc value of sample B decreased with increasing the applied magnetic field and the superconductivity disappeared at about 15 T. It was found that the three element ratio in NSG123 contributed to flux pinning in a different manner and affected in Jc behavior in magnetic field.

AB - The effect of the starting composition on the superconducting properties for ternary system (Nd, Sm, Gd)-Ba-Cu-O filaments was systematically investigated. The filaments with the composition of (Nd0.33,Sm0.33,Gd0.33)1.18Ba 2.12Cu3.09Oy (sample A), (Nd0.50,Sm0.25,Gd0.25)1.18Ba 2.12Cu3.09Oy (sample B), (Nd0.25,Sm0.50,Gd0.25)1.18Ba 2.12Cu3.09Oy (sample C) and (Nd0.25,Sm0.25,Gd0.50)1.18Ba 2.12Cu3.09Oy (sample D) were prepared by a solution spinning method. All samples partially melted at temperature range of 1030-1080 °C in flowing 0.1% O2 + Ar exhibited Jc value higher than 104 A/cm2 at 77.3 K and self-field. Among these samples, the best transport Jc value of 7.2 × 104 A/cm2 was attained in sample B with Nd-rich composition. The field dependence of transport Jc value was also examined at various temperatures between 77.3 K and 90 K in applied magnetic fields up to 17 T. In the case of samples A, the Jc value gradually decreased with increasing the applied magnetic field, and the Jc value of 2.4 × 103 A/cm2 at 77.3 K was maintained up to high magnetic fields of 17 T. On the contrary, the Jc value of sample B decreased with increasing the applied magnetic field and the superconductivity disappeared at about 15 T. It was found that the three element ratio in NSG123 contributed to flux pinning in a different manner and affected in Jc behavior in magnetic field.

KW - Critical current density

KW - Filamentary NSG123 superconductor

KW - Magnetic field behavior

UR - http://www.scopus.com/inward/record.url?scp=50449110417&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=50449110417&partnerID=8YFLogxK

U2 - 10.1016/j.physc.2008.05.077

DO - 10.1016/j.physc.2008.05.077

M3 - Article

AN - SCOPUS:50449110417

SN - 0921-4534

VL - 468

SP - 1583

EP - 1586

JO - Physica C: Superconductivity and its Applications

JF - Physica C: Superconductivity and its Applications

IS - 15-20

ER -

Initial composition dependence of the critical current density in filamentary NSG123 superconductors

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this