Strong enhancement of flux pinning in YBa2Cu3O 7-δ multilayers with columnar defects comprised of self-assembled BaZrO3 nanodots

S. Kang; K. J. Leonard; P. M. Martin; J. Li; A. Goyal

doi:10.1088/0953-2048/20/1/003

Strong enhancement of flux pinning in YBa₂Cu₃O _7-δ multilayers with columnar defects comprised of self-assembled BaZrO₃ nanodots

S. Kang^*
, K. J. Leonard
, P. M. Martin
, J. Li
, A. Goyal

^*Corresponding author for this work

Department of Physics

Oak Ridge National Laboratory

Research output: Contribution to journal › Journal article › peer-review

42 Scopus citations

Abstract

Multilayer structures comprising YBa₂Cu₃O _7-δ (YBCO) films with columns of self-assembled BaZrO ₃ (BZO) nanodots with interlayers of CeO₂ or pure YBa ₂Cu₃O_7-δ were grown on rolling-assisted biaxially textured substrates (RABiTSs) using pulsed laser deposition. A significant enhancement of the critical current density (J_c) was observed for the multilayers compared with a single layer of YBCO + BZO. J _c varies as J_c∼H^-α with α 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.

Original language	English
Article number	003
Pages (from-to)	11-15
Number of pages	5
Journal	Superconductor Science and Technology
Volume	20
Issue number	1
DOIs	https://doi.org/10.1088/0953-2048/20/1/003
State	Published - 2007.01.1

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title = "Strong enhancement of flux pinning in YBa2Cu3O 7-δ multilayers with columnar defects comprised of self-assembled BaZrO3 nanodots",

abstract = "Multilayer structures comprising YBa2Cu3O 7-δ (YBCO) films with columns of self-assembled BaZrO 3 (BZO) nanodots with interlayers of CeO2 or pure YBa 2Cu3O7-δ were grown on rolling-assisted biaxially textured substrates (RABiTSs) using pulsed laser deposition. A significant enhancement of the critical current density (Jc) was observed for the multilayers compared with a single layer of YBCO + BZO. J c varies as Jc∼H-α with α 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.",

author = "S. Kang and Leonard, \{K. J.\} and Martin, \{P. M.\} and J. Li and A. Goyal",

year = "2007",

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doi = "10.1088/0953-2048/20/1/003",

language = "English",

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journal = "Superconductor Science and Technology",

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TY - JOUR

T1 - Strong enhancement of flux pinning in YBa2Cu3O 7-δ multilayers with columnar defects comprised of self-assembled BaZrO3 nanodots

AU - Kang, S.

AU - Leonard, K. J.

AU - Martin, P. M.

AU - Li, J.

AU - Goyal, A.

PY - 2007/1/1

Y1 - 2007/1/1

N2 - Multilayer structures comprising YBa2Cu3O 7-δ (YBCO) films with columns of self-assembled BaZrO 3 (BZO) nanodots with interlayers of CeO2 or pure YBa 2Cu3O7-δ were grown on rolling-assisted biaxially textured substrates (RABiTSs) using pulsed laser deposition. A significant enhancement of the critical current density (Jc) was observed for the multilayers compared with a single layer of YBCO + BZO. J c varies as Jc∼H-α with α 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.

AB - Multilayer structures comprising YBa2Cu3O 7-δ (YBCO) films with columns of self-assembled BaZrO 3 (BZO) nanodots with interlayers of CeO2 or pure YBa 2Cu3O7-δ were grown on rolling-assisted biaxially textured substrates (RABiTSs) using pulsed laser deposition. A significant enhancement of the critical current density (Jc) was observed for the multilayers compared with a single layer of YBCO + BZO. J c varies as Jc∼H-α with α 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.

UR - https://www.scopus.com/pages/publications/33947696252

U2 - 10.1088/0953-2048/20/1/003

DO - 10.1088/0953-2048/20/1/003

M3 - Journal article

AN - SCOPUS:33947696252

SN - 0953-2048

VL - 20

SP - 11

EP - 15

JO - Superconductor Science and Technology

JF - Superconductor Science and Technology

IS - 1

M1 - 003

ER -

Strong enhancement of flux pinning in YBa₂Cu₃O _7-δ multilayers with columnar defects comprised of self-assembled BaZrO₃ nanodots

Abstract

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