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Title: Introduction of Artificial Pinning Center into PLD-YBCO Coated Conductor on IBAD and Self-Epitaxial CeO2 Buffered Metal Substrate

Abstract

In order to fabricate YBa2Cu3O7-x (YBCO) coated conductors with high critical current density Jc in magnetic fields, we fabricated YBCO coated conductors with artificial pinning centers by the pulsed laser deposition (PLD) method on a self epitaxial PLD-CeO2 layer and ion-beam assisted deposition (IBAD)-Gd2Zr2O7 (GZO) buffered Hastelloy tape. Artificial pinning centers were introduced by the PLD deposition using the yttria-stabilized zirconia (YSZ) oxide target (nano-dot method) and YBCO target including YSZ particles (mixed target method). In the experiments using YSZ oxide target, YSZ nano-dots were observed. They were approximately 15 nm in height and 10 nm to 70 nm in diameter. We found that the density of nano-dots was controlled by the number of laser pulses. These samples exhibited higher Jc than YBCO films in magnetic fields. Furthermore, a similar improvement of Jc was observed in the experiments using YBCO target including YSZ particles. TEM observation revealed that columnar nano-structure made of BaZrO3 was formed during YBCO deposition and it was effective for pinning. We call this new epitaxial nano-structure 'bamboo structure' from its anisotropic growth and morphology.

Authors:
; ; ; ; ; ;  [1]; ;  [2];  [3]
  1. Superconductivity Research Laboratory, ISTEC, 2-4-1 Mutsuno, Atsuta-ku, Nagoya, 456-8587 (Japan)
  2. Materials R and D Laboratory, Japan Fine Ceramics Center, 2-4-1 Mutsuno, Atsuta-ku, Nagoya 456-8587 (Japan)
  3. Superconductivity Research Laboratory, ISTEC, 1-10-13 Shinonome, Koto-ku, Tokyo 135-0062 (Japan)
Publication Date:
OSTI Identifier:
20800187
Resource Type:
Journal Article
Journal Name:
AIP Conference Proceedings
Additional Journal Information:
Journal Volume: 824; Journal Issue: 1; Conference: Cryogenic engineering conference, Keystone, CO (United States), 29 Aug - 2 Sep 2005; Other Information: DOI: 10.1063/1.2192416; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0094-243X
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ANISOTROPY; BARIUM COMPOUNDS; CRITICAL CURRENT; CUPRATES; CURRENT DENSITY; DENSITY; ENERGY BEAM DEPOSITION; EPITAXY; HIGH-TC SUPERCONDUCTORS; ION BEAMS; LASER RADIATION; LAYERS; MAGNETIC FIELDS; MAGNETIC FLUX; MORPHOLOGY; PARTICLES; PULSED IRRADIATION; PULSES; SUBSTRATES; SUPERCONDUCTING FILMS; SUPERCONDUCTIVITY; TRANSMISSION ELECTRON MICROSCOPY; YTTRIUM OXIDES; ZIRCONIUM OXIDES

Citation Formats

Kobayashi, H, Yamada, Y, Ishida, S, Takahashi, K, Konishi, M, Ibi, A, Miyata, S, Kato, T, Hirayama, T, and Shiohara, Y. Introduction of Artificial Pinning Center into PLD-YBCO Coated Conductor on IBAD and Self-Epitaxial CeO2 Buffered Metal Substrate. United States: N. p., 2006. Web. doi:10.1063/1.2192416.
Kobayashi, H, Yamada, Y, Ishida, S, Takahashi, K, Konishi, M, Ibi, A, Miyata, S, Kato, T, Hirayama, T, & Shiohara, Y. Introduction of Artificial Pinning Center into PLD-YBCO Coated Conductor on IBAD and Self-Epitaxial CeO2 Buffered Metal Substrate. United States. doi:10.1063/1.2192416.
Kobayashi, H, Yamada, Y, Ishida, S, Takahashi, K, Konishi, M, Ibi, A, Miyata, S, Kato, T, Hirayama, T, and Shiohara, Y. Fri . "Introduction of Artificial Pinning Center into PLD-YBCO Coated Conductor on IBAD and Self-Epitaxial CeO2 Buffered Metal Substrate". United States. doi:10.1063/1.2192416.
@article{osti_20800187,
title = {Introduction of Artificial Pinning Center into PLD-YBCO Coated Conductor on IBAD and Self-Epitaxial CeO2 Buffered Metal Substrate},
author = {Kobayashi, H and Yamada, Y and Ishida, S and Takahashi, K and Konishi, M and Ibi, A and Miyata, S and Kato, T and Hirayama, T and Shiohara, Y},
abstractNote = {In order to fabricate YBa2Cu3O7-x (YBCO) coated conductors with high critical current density Jc in magnetic fields, we fabricated YBCO coated conductors with artificial pinning centers by the pulsed laser deposition (PLD) method on a self epitaxial PLD-CeO2 layer and ion-beam assisted deposition (IBAD)-Gd2Zr2O7 (GZO) buffered Hastelloy tape. Artificial pinning centers were introduced by the PLD deposition using the yttria-stabilized zirconia (YSZ) oxide target (nano-dot method) and YBCO target including YSZ particles (mixed target method). In the experiments using YSZ oxide target, YSZ nano-dots were observed. They were approximately 15 nm in height and 10 nm to 70 nm in diameter. We found that the density of nano-dots was controlled by the number of laser pulses. These samples exhibited higher Jc than YBCO films in magnetic fields. Furthermore, a similar improvement of Jc was observed in the experiments using YBCO target including YSZ particles. TEM observation revealed that columnar nano-structure made of BaZrO3 was formed during YBCO deposition and it was effective for pinning. We call this new epitaxial nano-structure 'bamboo structure' from its anisotropic growth and morphology.},
doi = {10.1063/1.2192416},
journal = {AIP Conference Proceedings},
issn = {0094-243X},
number = 1,
volume = 824,
place = {United States},
year = {2006},
month = {3}
}