Fabrication of high-Jc NdBa2Cu3O 7-δ and BaZrO3-doped NdBa2Cu 3O7-δ films on RABiTS

S. H. Wee; A. Goyal; P. M. Martin; J. Li; M. Paranthaman; L. Heatherly

doi:10.1109/TASC.2007.899372

Fabrication of high-J_c NdBa₂Cu₃O _7-δ and BaZrO₃-doped NdBa₂Cu ₃O_7-δ films on RABiTS

S. H. Wee
, A. Goyal
, P. M. Martin
, J. Li
, M. Paranthaman
, L. Heatherly

Department of Chemical and Biological Engineering

Oak Ridge National Laboratory

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

1 Scopus citations

Abstract

Critical current densities (J_c) over 2 MA/cm² have been obtained for epitaxial NdBa₂Cu_7-δ (NdBCO) films deposited via pulsed laser deposition on RABiTS having the configuration of Ni - 3at.%W /Y₂O₃/YSZ/CeO₂. Compared to YBa ₂Cu₃O_7-δ (YBCO) films on RABiTS, enhanced J_c in applied magnetic fields is observed for the NdBCO films. Further improvement in in-field J_c is achieved by incorporation of self-assembled BaZrO₃ (BZO) nanodots within the NdBCO film. At intermediate fields J_c varies as J_c ∼ H^-a, with α values for un-doped and BZO-doped films being ~0.43 and ~0.37 respectively, significantly lower than α ~ 0.52 for pure YBCO films. Combined effects of better pinning in NdBCO films over YBCO films as well as creation of columnar defects via incorporation of self-assembled BZO nanodots, result in significant improvement over pure YBCO films on RABiTS.

Original language	English
Pages (from-to)	3672-3674
Number of pages	3
Journal	IEEE Transactions on Applied Superconductivity
Volume	17
Issue number	2
DOIs	https://doi.org/10.1109/TASC.2007.899372
State	Published - Jun 2007

Keywords

BaZrO nanodots
critical current density
Fluxpinning
NdBa CuO films
RABiTS

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@article{141417b3385a4e63bd8f32326f5e895a,

title = "Fabrication of high-Jc NdBa2Cu3O 7-δ and BaZrO3-doped NdBa2Cu 3O7-δ films on RABiTS",

abstract = "Critical current densities (Jc) over 2 MA/cm2 have been obtained for epitaxial NdBa2Cu7-δ (NdBCO) films deposited via pulsed laser deposition on RABiTS having the configuration of Ni - 3at.\%W /Y2O3/YSZ/CeO2. Compared to YBa 2Cu3O7-δ (YBCO) films on RABiTS, enhanced Jc in applied magnetic fields is observed for the NdBCO films. Further improvement in in-field Jc is achieved by incorporation of self-assembled BaZrO3 (BZO) nanodots within the NdBCO film. At intermediate fields Jc varies as Jc ∼ H-a, with α values for un-doped and BZO-doped films being \textasciitilde{}0.43 and \textasciitilde{}0.37 respectively, significantly lower than α \textasciitilde{} 0.52 for pure YBCO films. Combined effects of better pinning in NdBCO films over YBCO films as well as creation of columnar defects via incorporation of self-assembled BZO nanodots, result in significant improvement over pure YBCO films on RABiTS.",

keywords = "BaZrO nanodots, critical current density, Fluxpinning, NdBa CuO films, RABiTS",

author = "Wee, \{S. H.\} and A. Goyal and Martin, \{P. M.\} and J. Li and M. Paranthaman and L. Heatherly",

year = "2007",

month = jun,

doi = "10.1109/TASC.2007.899372",

language = "English",

volume = "17",

pages = "3672--3674",

journal = "IEEE Transactions on Applied Superconductivity",

issn = "1051-8223",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

number = "2",

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T1 - Fabrication of high-Jc NdBa2Cu3O 7-δ and BaZrO3-doped NdBa2Cu 3O7-δ films on RABiTS

AU - Wee, S. H.

AU - Goyal, A.

AU - Martin, P. M.

AU - Li, J.

AU - Paranthaman, M.

AU - Heatherly, L.

PY - 2007/6

Y1 - 2007/6

N2 - Critical current densities (Jc) over 2 MA/cm2 have been obtained for epitaxial NdBa2Cu7-δ (NdBCO) films deposited via pulsed laser deposition on RABiTS having the configuration of Ni - 3at.%W /Y2O3/YSZ/CeO2. Compared to YBa 2Cu3O7-δ (YBCO) films on RABiTS, enhanced Jc in applied magnetic fields is observed for the NdBCO films. Further improvement in in-field Jc is achieved by incorporation of self-assembled BaZrO3 (BZO) nanodots within the NdBCO film. At intermediate fields Jc varies as Jc ∼ H-a, with α values for un-doped and BZO-doped films being ~0.43 and ~0.37 respectively, significantly lower than α ~ 0.52 for pure YBCO films. Combined effects of better pinning in NdBCO films over YBCO films as well as creation of columnar defects via incorporation of self-assembled BZO nanodots, result in significant improvement over pure YBCO films on RABiTS.

AB - Critical current densities (Jc) over 2 MA/cm2 have been obtained for epitaxial NdBa2Cu7-δ (NdBCO) films deposited via pulsed laser deposition on RABiTS having the configuration of Ni - 3at.%W /Y2O3/YSZ/CeO2. Compared to YBa 2Cu3O7-δ (YBCO) films on RABiTS, enhanced Jc in applied magnetic fields is observed for the NdBCO films. Further improvement in in-field Jc is achieved by incorporation of self-assembled BaZrO3 (BZO) nanodots within the NdBCO film. At intermediate fields Jc varies as Jc ∼ H-a, with α values for un-doped and BZO-doped films being ~0.43 and ~0.37 respectively, significantly lower than α ~ 0.52 for pure YBCO films. Combined effects of better pinning in NdBCO films over YBCO films as well as creation of columnar defects via incorporation of self-assembled BZO nanodots, result in significant improvement over pure YBCO films on RABiTS.

KW - BaZrO nanodots

KW - critical current density

KW - Fluxpinning

KW - NdBa CuO films

KW - RABiTS

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DO - 10.1109/TASC.2007.899372

M3 - Article

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SN - 1051-8223

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SP - 3672

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JO - IEEE Transactions on Applied Superconductivity

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ER -

Fabrication of high-J_c NdBa₂Cu₃O _7-δ and BaZrO₃-doped NdBa₂Cu ₃O_7-δ films on RABiTS

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