Pinning properties in melt-processed YbBa2Cu3O7-δ with finely dispersed Yb2BaCuO5 inclusions

Tadashi Mochida; Naomichi Sakai; Sang Im Yoo; Masato Murakami

doi:10.1016/S0921-4534(01)00914-5

Pinning properties in melt-processed YbBa₂Cu₃O_7-δ with finely dispersed Yb₂BaCuO₅ inclusions

Tadashi Mochida, Naomichi Sakai, Sang Im Yoo, Masato Murakami

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

8 Citations (Scopus)

Abstract

We have studied the pinning characteristics of melt-processed Yb-Ba-Cu-O, in which Yb₂BaCuO₅ (Yb211) particles are dispersed in the YbBa₂Cu₃O₇ (Yb123) matrix. The sample showed a sharp superconducting transition (T_c) with an onset value of 88.5 K. In spite of its low T_c in the RE123 families (RE=rare earth elements), the sample showed a large shielding current density of 5.5 × 10⁸ A/m² at 77 K and 0 T, which is comparable to those of melt-processed Y-Ba-Cu-O and OCMG-processed Nd-Ba-Cu-O. Analyses reveal that the dominant pinning center of melt-processed Yb-Ba-Cu-O bulk superconductors is Yb211 inclusions.

Original language	English
Pages (from-to)	229-237
Number of pages	9
Journal	Physica C: Superconductivity and its applications
Volume	366
Issue number	4
DOIs	https://doi.org/10.1016/S0921-4534(01)00914-5
Publication status	Published - 2002 Feb 1
Externally published	Yes

Keywords

Irreversibility field
Melt-process
Nonsuperconducting inclusion
Pinning property
Yb-Ba-Cu-O

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/S0921-4534(01)00914-5

Cite this

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title = "Pinning properties in melt-processed YbBa2Cu3O7-δ with finely dispersed Yb2BaCuO5 inclusions",

abstract = "We have studied the pinning characteristics of melt-processed Yb-Ba-Cu-O, in which Yb2BaCuO5 (Yb211) particles are dispersed in the YbBa2Cu3O7 (Yb123) matrix. The sample showed a sharp superconducting transition (Tc) with an onset value of 88.5 K. In spite of its low Tc in the RE123 families (RE=rare earth elements), the sample showed a large shielding current density of 5.5 × 108 A/m2 at 77 K and 0 T, which is comparable to those of melt-processed Y-Ba-Cu-O and OCMG-processed Nd-Ba-Cu-O. Analyses reveal that the dominant pinning center of melt-processed Yb-Ba-Cu-O bulk superconductors is Yb211 inclusions.",

keywords = "Irreversibility field, Melt-process, Nonsuperconducting inclusion, Pinning property, Yb-Ba-Cu-O",

author = "Tadashi Mochida and Naomichi Sakai and Yoo, {Sang Im} and Masato Murakami",

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TY - JOUR

T1 - Pinning properties in melt-processed YbBa2Cu3O7-δ with finely dispersed Yb2BaCuO5 inclusions

AU - Mochida, Tadashi

AU - Sakai, Naomichi

AU - Yoo, Sang Im

AU - Murakami, Masato

PY - 2002/2/1

Y1 - 2002/2/1

N2 - We have studied the pinning characteristics of melt-processed Yb-Ba-Cu-O, in which Yb2BaCuO5 (Yb211) particles are dispersed in the YbBa2Cu3O7 (Yb123) matrix. The sample showed a sharp superconducting transition (Tc) with an onset value of 88.5 K. In spite of its low Tc in the RE123 families (RE=rare earth elements), the sample showed a large shielding current density of 5.5 × 108 A/m2 at 77 K and 0 T, which is comparable to those of melt-processed Y-Ba-Cu-O and OCMG-processed Nd-Ba-Cu-O. Analyses reveal that the dominant pinning center of melt-processed Yb-Ba-Cu-O bulk superconductors is Yb211 inclusions.

AB - We have studied the pinning characteristics of melt-processed Yb-Ba-Cu-O, in which Yb2BaCuO5 (Yb211) particles are dispersed in the YbBa2Cu3O7 (Yb123) matrix. The sample showed a sharp superconducting transition (Tc) with an onset value of 88.5 K. In spite of its low Tc in the RE123 families (RE=rare earth elements), the sample showed a large shielding current density of 5.5 × 108 A/m2 at 77 K and 0 T, which is comparable to those of melt-processed Y-Ba-Cu-O and OCMG-processed Nd-Ba-Cu-O. Analyses reveal that the dominant pinning center of melt-processed Yb-Ba-Cu-O bulk superconductors is Yb211 inclusions.

KW - Irreversibility field

KW - Melt-process

KW - Nonsuperconducting inclusion

KW - Pinning property

KW - Yb-Ba-Cu-O

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