Phase-separated, epitaxial, nanostructured LaMnO3+MgO composite cap layer films for propagation of pinning defects in YBa2Cu 3O7δ coated conductors

Sung Hun Wee; Junsoo Shin; Claudia Cantoni; Harry M. Meyer; Sy Cook; Yuri L. Zuev; Eliot Specht; Xuming Xiong; M. Parans Paranthaman; V. Selvamanikcam; Amit Goyal

doi:10.1143/APEX.2.063008

Phase-separated, epitaxial, nanostructured LaMnO₃+MgO composite cap layer films for propagation of pinning defects in YBa₂Cu ₃O₇δ coated conductors

Sung Hun Wee, Junsoo Shin, Claudia Cantoni, Harry M. Meyer, Sy Cook, Yuri L. Zuev, Eliot Specht, Xuming Xiong, M. Parans Paranthaman, V. Selvamanikcam, Amit Goyal

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

6 Scopus citations

Abstract

Nanostructural modulation in the cap layer used in coated conductors can be a potential source for nucleating microstructural defects into the superconducting layer for improving the flux-pinning. We report on the successful fabrication of phase separated, epitaxial, nanostructured films comprised of LaMnO₃ (LMO) and MgO via pulsed laser deposition (PLD) on biaxially-textured MgO metallic templates with a LMO buffer layer. Scanning Auger compositional mapping and transmission electron microscopy cross sectional images confirm the nanoscale, spatial modulation corresponding to the nanostructured phase separation in the film. YBa₂Cu₃O ₇-δ films (0.8 μm thick) grown using PLD on such phase separated, nanostructured cap layers show reduced field dependence of the critical current density with an α value of ̃0:38 (in J_c ̃ H_-α).

Original language	English
Article number	063008
Journal	Applied Physics Express
Volume	2
Issue number	6
DOIs	https://doi.org/10.1143/APEX.2.063008
State	Published - Jun 2009

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Wee, S. H., Shin, J., Cantoni, C., Meyer, H. M., Cook, S., Zuev, Y. L., Specht, E., Xiong, X., Paranthaman, M. P., Selvamanikcam, V., & Goyal, A. (2009). Phase-separated, epitaxial, nanostructured LaMnO₃+MgO composite cap layer films for propagation of pinning defects in YBa₂Cu ₃O₇δ coated conductors. Applied Physics Express, 2(6), Article 063008. https://doi.org/10.1143/APEX.2.063008

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title = "Phase-separated, epitaxial, nanostructured LaMnO3+MgO composite cap layer films for propagation of pinning defects in YBa2Cu 3O7δ coated conductors",

abstract = "Nanostructural modulation in the cap layer used in coated conductors can be a potential source for nucleating microstructural defects into the superconducting layer for improving the flux-pinning. We report on the successful fabrication of phase separated, epitaxial, nanostructured films comprised of LaMnO3 (LMO) and MgO via pulsed laser deposition (PLD) on biaxially-textured MgO metallic templates with a LMO buffer layer. Scanning Auger compositional mapping and transmission electron microscopy cross sectional images confirm the nanoscale, spatial modulation corresponding to the nanostructured phase separation in the film. YBa2Cu3O 7-δ films (0.8 μm thick) grown using PLD on such phase separated, nanostructured cap layers show reduced field dependence of the critical current density with an α value of{\~ }0:38 (in Jc{\~ } H-α).",

author = "Wee, {Sung Hun} and Junsoo Shin and Claudia Cantoni and Meyer, {Harry M.} and Sy Cook and Zuev, {Yuri L.} and Eliot Specht and Xuming Xiong and Paranthaman, {M. Parans} and V. Selvamanikcam and Amit Goyal",

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month = jun,

doi = "10.1143/APEX.2.063008",

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T1 - Phase-separated, epitaxial, nanostructured LaMnO3+MgO composite cap layer films for propagation of pinning defects in YBa2Cu 3O7δ coated conductors

AU - Wee, Sung Hun

AU - Shin, Junsoo

AU - Cantoni, Claudia

AU - Meyer, Harry M.

AU - Cook, Sy

AU - Zuev, Yuri L.

AU - Specht, Eliot

AU - Xiong, Xuming

AU - Paranthaman, M. Parans

AU - Selvamanikcam, V.

AU - Goyal, Amit

PY - 2009/6

Y1 - 2009/6

N2 - Nanostructural modulation in the cap layer used in coated conductors can be a potential source for nucleating microstructural defects into the superconducting layer for improving the flux-pinning. We report on the successful fabrication of phase separated, epitaxial, nanostructured films comprised of LaMnO3 (LMO) and MgO via pulsed laser deposition (PLD) on biaxially-textured MgO metallic templates with a LMO buffer layer. Scanning Auger compositional mapping and transmission electron microscopy cross sectional images confirm the nanoscale, spatial modulation corresponding to the nanostructured phase separation in the film. YBa2Cu3O 7-δ films (0.8 μm thick) grown using PLD on such phase separated, nanostructured cap layers show reduced field dependence of the critical current density with an α value of ̃0:38 (in Jc ̃ H-α).

AB - Nanostructural modulation in the cap layer used in coated conductors can be a potential source for nucleating microstructural defects into the superconducting layer for improving the flux-pinning. We report on the successful fabrication of phase separated, epitaxial, nanostructured films comprised of LaMnO3 (LMO) and MgO via pulsed laser deposition (PLD) on biaxially-textured MgO metallic templates with a LMO buffer layer. Scanning Auger compositional mapping and transmission electron microscopy cross sectional images confirm the nanoscale, spatial modulation corresponding to the nanostructured phase separation in the film. YBa2Cu3O 7-δ films (0.8 μm thick) grown using PLD on such phase separated, nanostructured cap layers show reduced field dependence of the critical current density with an α value of ̃0:38 (in Jc ̃ H-α).

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JO - Applied Physics Express

JF - Applied Physics Express

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ER -

Phase-separated, epitaxial, nanostructured LaMnO₃+MgO composite cap layer films for propagation of pinning defects in YBa₂Cu ₃O₇δ coated conductors

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