Properties of YBCO on LaMnO3-capped IBAD MgO-templates without homo-epitaxial MgO layer

Ö Polat; Tolga Aytug; Mariappan Paranthaman; Kyunghoon Kim; Yifei Zhang; Claudia Cantoni; Yuri L. Zuev; Amit Goyal; James R. Thompson; David K. Christen; Xuming Xiong; Venkat Selvamanickam

doi:10.1109/TASC.2009.2018815

Properties of YBCO on LaMnO₃-capped IBAD MgO-templates without homo-epitaxial MgO layer

Ö Polat, Tolga Aytug, Mariappan Paranthaman, Kyunghoon Kim, Yifei Zhang, Claudia Cantoni, Yuri L. Zuev, Amit Goyal, James R. Thompson, David K. Christen, Xuming Xiong, Venkat Selvamanickam

Nanomaterials Chemistry Group

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

5 Scopus citations

Abstract

Previously, it has been well established that in an IBAD architecture for coated conductors, (1) LaMnO₃ (LMO) buffer layers are structurally and chemically compatible with an underlying homo-epitaxial MgO layer and (2) high current density YBCO films can be grown on these LMO templates. In the present work, the homo-epi MgO layer has been successfully eliminated and a LMO cap layer was grown directly on the IBAD-MgO template. The performance of the LMO/IBAD-MgO samples has been qualified by depositing 1 μm-thick YBCO coatings by pulsed laser deposition. Electrical transport measurements of YBCO films on the standard (with homo-epi MgO) and simplified (without homo-epi MgO) IBAD architectures were carried out. The angular dependence of critical current density (J_c) is similar for both IBAD architectures. XRD measurements indicate good, c-axis aligned YBCO films. Transmission electron microscopy (TEM) images reveal that microstructures of YBCO/LMO/IBAD-MgO and YBCO/LMO/homo-epi MgO/IBAD-MgO templates are similar. These results demonstrate the strong potential of using LMO as a single cap layer directly on IBAD-MgO for the development of a simplified IBAD architecture.

Original language	English
Article number	5153190
Pages (from-to)	3315-3318
Number of pages	4
Journal	IEEE Transactions on Applied Superconductivity
Volume	19
Issue number	3
DOIs	https://doi.org/10.1109/TASC.2009.2018815
State	Published - Jun 2009

Keywords

Buffers
Critical current density
IBAD-MgO
LMO
PLD-YBCO

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Polat, Ö., Aytug, T., Paranthaman, M., Kim, K., Zhang, Y., Cantoni, C., Zuev, Y. L., Goyal, A., Thompson, J. R., Christen, D. K., Xiong, X., & Selvamanickam, V. (2009). Properties of YBCO on LaMnO₃-capped IBAD MgO-templates without homo-epitaxial MgO layer. IEEE Transactions on Applied Superconductivity, 19(3), 3315-3318. Article 5153190. https://doi.org/10.1109/TASC.2009.2018815

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abstract = "Previously, it has been well established that in an IBAD architecture for coated conductors, (1) LaMnO3 (LMO) buffer layers are structurally and chemically compatible with an underlying homo-epitaxial MgO layer and (2) high current density YBCO films can be grown on these LMO templates. In the present work, the homo-epi MgO layer has been successfully eliminated and a LMO cap layer was grown directly on the IBAD-MgO template. The performance of the LMO/IBAD-MgO samples has been qualified by depositing 1 μm-thick YBCO coatings by pulsed laser deposition. Electrical transport measurements of YBCO films on the standard (with homo-epi MgO) and simplified (without homo-epi MgO) IBAD architectures were carried out. The angular dependence of critical current density (Jc) is similar for both IBAD architectures. XRD measurements indicate good, c-axis aligned YBCO films. Transmission electron microscopy (TEM) images reveal that microstructures of YBCO/LMO/IBAD-MgO and YBCO/LMO/homo-epi MgO/IBAD-MgO templates are similar. These results demonstrate the strong potential of using LMO as a single cap layer directly on IBAD-MgO for the development of a simplified IBAD architecture.",

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AU - Kim, Kyunghoon

AU - Zhang, Yifei

AU - Cantoni, Claudia

AU - Zuev, Yuri L.

AU - Goyal, Amit

AU - Thompson, James R.

AU - Christen, David K.

AU - Xiong, Xuming

AU - Selvamanickam, Venkat

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AB - Previously, it has been well established that in an IBAD architecture for coated conductors, (1) LaMnO3 (LMO) buffer layers are structurally and chemically compatible with an underlying homo-epitaxial MgO layer and (2) high current density YBCO films can be grown on these LMO templates. In the present work, the homo-epi MgO layer has been successfully eliminated and a LMO cap layer was grown directly on the IBAD-MgO template. The performance of the LMO/IBAD-MgO samples has been qualified by depositing 1 μm-thick YBCO coatings by pulsed laser deposition. Electrical transport measurements of YBCO films on the standard (with homo-epi MgO) and simplified (without homo-epi MgO) IBAD architectures were carried out. The angular dependence of critical current density (Jc) is similar for both IBAD architectures. XRD measurements indicate good, c-axis aligned YBCO films. Transmission electron microscopy (TEM) images reveal that microstructures of YBCO/LMO/IBAD-MgO and YBCO/LMO/homo-epi MgO/IBAD-MgO templates are similar. These results demonstrate the strong potential of using LMO as a single cap layer directly on IBAD-MgO for the development of a simplified IBAD architecture.

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Properties of YBCO on LaMnO₃-capped IBAD MgO-templates without homo-epitaxial MgO layer

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Keywords

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