Formation of self-assembled, double-perovskite, Ba2YNbO 6 nanocolumns and their contribution to flux-pinning and J c in Nb-doped YBa2Cu3O7-δ films

Sung Hun Wee; Amit Goyal; Yuri L. Zuev; Claudia Cantoni; V. Selvamanickam; Eliot D. Specht

doi:10.1143/APEX.3.023101

Formation of self-assembled, double-perovskite, Ba₂YNbO ₆ nanocolumns and their contribution to flux-pinning and J _c in Nb-doped YBa₂Cu₃O_7-δ films

Sung Hun Wee
, Amit Goyal
, Yuri L. Zuev
, Claudia Cantoni
, V. Selvamanickam
, Eliot D. Specht

Department of Chemical and Biological Engineering

Oak Ridge National Laboratory
University of Tennessee
University of Tennessee
University of Houston

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

67 Scopus citations

Abstract

Ba₂RENbO₆ (RE = rare earth elements including Y) compounds are considered new additives for superior flux-pinning in YBa ₂Cu₃O_7-δ (YBCO) films due to their excellent chemical inertness to and large lattice mismatches with YBCO. Simultaneous laser ablation of a YBCO target and a Nb metal foil attached to the surface of the target resulted in epitaxial growth of YBCO films having columnar defects comprised of self-aligned Ba₂YNbO₆ (BYNO) nanorods parallel to the c-axis of the film. Compared to pure YBCO, YBCO+BYNO films exhibited no T_c reduction as well as superior J_c performance with higher self- and in-field J_c by a factor of 1.5-7 and also exhibited a strong J_c peak for H ∥ c indicative of strong c-axis correlated flux-pinning.

Original language	English
Article number	023101
Journal	Applied Physics Express
Volume	3
Issue number	2
DOIs	https://doi.org/10.1143/APEX.3.023101
State	Published - Feb 2010

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title = "Formation of self-assembled, double-perovskite, Ba2YNbO 6 nanocolumns and their contribution to flux-pinning and J c in Nb-doped YBa2Cu3O7-δ films",

abstract = "Ba2RENbO6 (RE = rare earth elements including Y) compounds are considered new additives for superior flux-pinning in YBa 2Cu3O7-δ (YBCO) films due to their excellent chemical inertness to and large lattice mismatches with YBCO. Simultaneous laser ablation of a YBCO target and a Nb metal foil attached to the surface of the target resulted in epitaxial growth of YBCO films having columnar defects comprised of self-aligned Ba2YNbO6 (BYNO) nanorods parallel to the c-axis of the film. Compared to pure YBCO, YBCO+BYNO films exhibited no Tc reduction as well as superior Jc performance with higher self- and in-field Jc by a factor of 1.5-7 and also exhibited a strong Jc peak for H ∥ c indicative of strong c-axis correlated flux-pinning.",

author = "Wee, \{Sung Hun\} and Amit Goyal and Zuev, \{Yuri L.\} and Claudia Cantoni and V. Selvamanickam and Specht, \{Eliot D.\}",

year = "2010",

month = feb,

doi = "10.1143/APEX.3.023101",

language = "English",

volume = "3",

journal = "Applied Physics Express",

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T1 - Formation of self-assembled, double-perovskite, Ba2YNbO 6 nanocolumns and their contribution to flux-pinning and J c in Nb-doped YBa2Cu3O7-δ films

AU - Wee, Sung Hun

AU - Goyal, Amit

AU - Zuev, Yuri L.

AU - Cantoni, Claudia

AU - Selvamanickam, V.

AU - Specht, Eliot D.

PY - 2010/2

Y1 - 2010/2

N2 - Ba2RENbO6 (RE = rare earth elements including Y) compounds are considered new additives for superior flux-pinning in YBa 2Cu3O7-δ (YBCO) films due to their excellent chemical inertness to and large lattice mismatches with YBCO. Simultaneous laser ablation of a YBCO target and a Nb metal foil attached to the surface of the target resulted in epitaxial growth of YBCO films having columnar defects comprised of self-aligned Ba2YNbO6 (BYNO) nanorods parallel to the c-axis of the film. Compared to pure YBCO, YBCO+BYNO films exhibited no Tc reduction as well as superior Jc performance with higher self- and in-field Jc by a factor of 1.5-7 and also exhibited a strong Jc peak for H ∥ c indicative of strong c-axis correlated flux-pinning.

AB - Ba2RENbO6 (RE = rare earth elements including Y) compounds are considered new additives for superior flux-pinning in YBa 2Cu3O7-δ (YBCO) films due to their excellent chemical inertness to and large lattice mismatches with YBCO. Simultaneous laser ablation of a YBCO target and a Nb metal foil attached to the surface of the target resulted in epitaxial growth of YBCO films having columnar defects comprised of self-aligned Ba2YNbO6 (BYNO) nanorods parallel to the c-axis of the film. Compared to pure YBCO, YBCO+BYNO films exhibited no Tc reduction as well as superior Jc performance with higher self- and in-field Jc by a factor of 1.5-7 and also exhibited a strong Jc peak for H ∥ c indicative of strong c-axis correlated flux-pinning.

UR - https://www.scopus.com/pages/publications/76949101714

U2 - 10.1143/APEX.3.023101

DO - 10.1143/APEX.3.023101

M3 - Article

AN - SCOPUS:76949101714

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ER -

Formation of self-assembled, double-perovskite, Ba₂YNbO ₆ nanocolumns and their contribution to flux-pinning and J _c in Nb-doped YBa₂Cu₃O_7-δ films

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