Effect of Eu2BaCuO5 addition on the matrix composition and flux pinning in (Nd0.33Eu0.33Gd0.33)Ba2Cu3Oy superconductors

M. Muralidhar; M. Murakami

doi:10.1088/0953-2048/13/12/304

Effect of Eu₂BaCuO₅ addition on the matrix composition and flux pinning in (Nd_0.33Eu_0.33Gd_0.33)Ba₂Cu₃O_y superconductors

M. Muralidhar, M. Murakami

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

6 Citations (Scopus)

Abstract

We have investigated the microstructure and flux-pinning properties of the (Nd_0.33Eu_0.33Gd_0.33)Ba₂Cu₃O_y (NEG-123) bulk superconductors with the addition of different amounts of Eu₂BaCuO₅ (Eu-211) secondary phase particles using SEM, EPMA and magnetic measurements. The SEM study showed that the submicrometre secondary-phase particles were finely distributed in the NEG-123 matrix. Chemical analyses revealed that the matrix composition changed with the quantity of Eu-211 particles. The scaling study of the volume pinning forces showed that the peak position lies around h≈0.52, which indicates enhanced ΔT_c-type pinning. For the NEG-123 sample with 20 mol% Eu-211 additions, a large critical current density (J_c) of 50 000 A cm^-2 was achieved at 77 K and 2.7 T for the H∥c axis.

Original language	English
Pages (from-to)	1587-1594
Number of pages	8
Journal	Superconductor Science and Technology
Volume	13
Issue number	12
DOIs	https://doi.org/10.1088/0953-2048/13/12/304
Publication status	Published - 2000 Dec 1
Externally published	Yes

ASJC Scopus subject areas

Ceramics and Composites
Condensed Matter Physics
Metals and Alloys
Electrical and Electronic Engineering
Materials Chemistry

Access to Document

10.1088/0953-2048/13/12/304

Cite this

@article{6f488c2aba784944b25f4fd9f84eef9b,

title = "Effect of Eu2BaCuO5 addition on the matrix composition and flux pinning in (Nd0.33Eu0.33Gd0.33)Ba2Cu3Oy superconductors",

abstract = "We have investigated the microstructure and flux-pinning properties of the (Nd0.33Eu0.33Gd0.33)Ba2Cu3Oy (NEG-123) bulk superconductors with the addition of different amounts of Eu2BaCuO5 (Eu-211) secondary phase particles using SEM, EPMA and magnetic measurements. The SEM study showed that the submicrometre secondary-phase particles were finely distributed in the NEG-123 matrix. Chemical analyses revealed that the matrix composition changed with the quantity of Eu-211 particles. The scaling study of the volume pinning forces showed that the peak position lies around h≈0.52, which indicates enhanced ΔTc-type pinning. For the NEG-123 sample with 20 mol% Eu-211 additions, a large critical current density (Jc) of 50 000 A cm-2 was achieved at 77 K and 2.7 T for the H∥c axis.",

author = "M. Muralidhar and M. Murakami",

year = "2000",

month = dec,

day = "1",

doi = "10.1088/0953-2048/13/12/304",

language = "English",

volume = "13",

pages = "1587--1594",

journal = "Superconductor Science and Technology",

issn = "0953-2048",

publisher = "IOP Publishing Ltd.",

number = "12",

}

TY - JOUR

T1 - Effect of Eu2BaCuO5 addition on the matrix composition and flux pinning in (Nd0.33Eu0.33Gd0.33)Ba2Cu3Oy superconductors

AU - Muralidhar, M.

AU - Murakami, M.

PY - 2000/12/1

Y1 - 2000/12/1

N2 - We have investigated the microstructure and flux-pinning properties of the (Nd0.33Eu0.33Gd0.33)Ba2Cu3Oy (NEG-123) bulk superconductors with the addition of different amounts of Eu2BaCuO5 (Eu-211) secondary phase particles using SEM, EPMA and magnetic measurements. The SEM study showed that the submicrometre secondary-phase particles were finely distributed in the NEG-123 matrix. Chemical analyses revealed that the matrix composition changed with the quantity of Eu-211 particles. The scaling study of the volume pinning forces showed that the peak position lies around h≈0.52, which indicates enhanced ΔTc-type pinning. For the NEG-123 sample with 20 mol% Eu-211 additions, a large critical current density (Jc) of 50 000 A cm-2 was achieved at 77 K and 2.7 T for the H∥c axis.

AB - We have investigated the microstructure and flux-pinning properties of the (Nd0.33Eu0.33Gd0.33)Ba2Cu3Oy (NEG-123) bulk superconductors with the addition of different amounts of Eu2BaCuO5 (Eu-211) secondary phase particles using SEM, EPMA and magnetic measurements. The SEM study showed that the submicrometre secondary-phase particles were finely distributed in the NEG-123 matrix. Chemical analyses revealed that the matrix composition changed with the quantity of Eu-211 particles. The scaling study of the volume pinning forces showed that the peak position lies around h≈0.52, which indicates enhanced ΔTc-type pinning. For the NEG-123 sample with 20 mol% Eu-211 additions, a large critical current density (Jc) of 50 000 A cm-2 was achieved at 77 K and 2.7 T for the H∥c axis.

UR - http://www.scopus.com/inward/record.url?scp=0034514613&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0034514613&partnerID=8YFLogxK

U2 - 10.1088/0953-2048/13/12/304

DO - 10.1088/0953-2048/13/12/304

M3 - Article

AN - SCOPUS:0034514613

SN - 0953-2048

VL - 13

SP - 1587

EP - 1594

JO - Superconductor Science and Technology

JF - Superconductor Science and Technology

IS - 12

ER -

Effect of Eu₂BaCuO₅ addition on the matrix composition and flux pinning in (Nd_0.33Eu_0.33Gd_0.33)Ba₂Cu₃O_y superconductors

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this