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Title: Strong Enhancement of Flux Pinning in YBa 2Cu 3O 7-δ Multilayers with Columnar Defects Comprised of Self-Assembled BaZrO 3

Abstract

Multilayer structures comprising YBa{sub 2}Cu{sub 3}O{sub 7-{delta}} (YBCO) films with columns of self-assembled BaZrO{sub 3} (BZO) nanodots with interlayers of CeO{sub 2} or pure YBa{sub 2}Cu{sub 3}O{sub 7-{delta}} were grown on rolling-assisted biaxially textured substrates (RABiTSs) using pulsed laser deposition. A significant enhancement of the critical current density (J{sub c}) was observed for the multilayers compared with a single layer of YBCO + BZO. J{sub c} varies as J{sub c}{approx}H{sup -{alpha}} with a of 0.27 for single layer of YBCO + BZO and 0.34 for both multilayered films. Enhancement of pinning in the multilayers is attributed to the presence of columnar defects comprised of self-assembled nanodots of BZO as well as planar CuO-type stacking defects arising as a result of interfacial reactions in the multilayers.

Authors:
 [1];  [1];  [1];  [1];  [1]
  1. ORNL
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
OE USDOE - Office of Electric Transmission and Distribution
OSTI Identifier:
931336
DOE Contract Number:  
DE-AC05-00OR22725
Resource Type:
Journal Article
Resource Relation:
Journal Name: Superconductor Science & Technology; Journal Volume: 20
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 77 NANOSCIENCE AND NANOTECHNOLOGY; CRITICAL CURRENT; CRYSTAL DEFECTS; MAGNETIC FLUX; YTTRIUM OXIDES; BARIUM OXIDES; COPPER OXIDES; FILMS; QUANTUM DOTS; ZIRCONIUM OXIDES; CERIUM OXIDES; CURRENT DENSITY

Citation Formats

Kang, Sukill, Leonard, Keith J, Martin, Patrick M, Li, Jing, and Goyal, Amit. Strong Enhancement of Flux Pinning in YBa2Cu3O7-δ Multilayers with Columnar Defects Comprised of Self-Assembled BaZrO3. United States: N. p., 2007. Web. doi:10.1088/0953-2048/20/1/003.
Kang, Sukill, Leonard, Keith J, Martin, Patrick M, Li, Jing, & Goyal, Amit. Strong Enhancement of Flux Pinning in YBa2Cu3O7-δ Multilayers with Columnar Defects Comprised of Self-Assembled BaZrO3. United States. doi:10.1088/0953-2048/20/1/003.
Kang, Sukill, Leonard, Keith J, Martin, Patrick M, Li, Jing, and Goyal, Amit. Mon . "Strong Enhancement of Flux Pinning in YBa2Cu3O7-δ Multilayers with Columnar Defects Comprised of Self-Assembled BaZrO3". United States. doi:10.1088/0953-2048/20/1/003.
@article{osti_931336,
title = {Strong Enhancement of Flux Pinning in YBa2Cu3O7-δ Multilayers with Columnar Defects Comprised of Self-Assembled BaZrO3},
author = {Kang, Sukill and Leonard, Keith J and Martin, Patrick M and Li, Jing and Goyal, Amit},
abstractNote = {Multilayer structures comprising YBa{sub 2}Cu{sub 3}O{sub 7-{delta}} (YBCO) films with columns of self-assembled BaZrO{sub 3} (BZO) nanodots with interlayers of CeO{sub 2} or pure YBa{sub 2}Cu{sub 3}O{sub 7-{delta}} were grown on rolling-assisted biaxially textured substrates (RABiTSs) using pulsed laser deposition. A significant enhancement of the critical current density (J{sub c}) was observed for the multilayers compared with a single layer of YBCO + BZO. J{sub c} varies as J{sub c}{approx}H{sup -{alpha}} with a of 0.27 for single layer of YBCO + BZO and 0.34 for both multilayered films. Enhancement of pinning in the multilayers is attributed to the presence of columnar defects comprised of self-assembled nanodots of BZO as well as planar CuO-type stacking defects arising as a result of interfacial reactions in the multilayers.},
doi = {10.1088/0953-2048/20/1/003},
journal = {Superconductor Science & Technology},
number = ,
volume = 20,
place = {United States},
year = {Mon Jan 01 00:00:00 EST 2007},
month = {Mon Jan 01 00:00:00 EST 2007}
}