Flux-pinning characteristics as a function of density of columnar defects comprised of self-assembled nanodots and nanorods in epitaxial YBa2Cu3O7-δ films for coated conductor applications

S. Kang; A. Goyal; J. Li; P. Martin; A. Ijaduola; J. R. Thompson; M. Paranthaman

doi:10.1016/j.physc.2007.02.017

Flux-pinning characteristics as a function of density of columnar defects comprised of self-assembled nanodots and nanorods in epitaxial YBa₂Cu₃O_7-δ films for coated conductor applications

S. Kang, A. Goyal, J. Li, P. Martin, A. Ijaduola, J. R. Thompson, M. Paranthaman

Nanomaterials Chemistry Group

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

50 Scopus citations

Abstract

Pure YBa₂Cu₃O_7-δ (YBCO) and YBCO films with extended columnar defects comprised of self-assembled columns of nanodots and nanorods of BaZrO₃ (BZO), CaZrO₃ (CZO) and 8 mol.% Y₂O₃ stabilized ZrO₂ (YSZ) were prepared by pulsed laser deposition on RABiTS templates of configuration CeO₂/YSZ/Y₂O₃/Ni-W. Effects on increasing the size and density of columnar defects by varying the total volume fraction BZO, CZO or YSZ incorporations within the YBCO film are reported. BZO volume fraction was varied between 0% and 8%, CZO between 0% and 2% and YSZ 0-2%. The critical transition temperature (T_c) was found to linearly decrease with increase in vol.% of BZO, CZO and YSZ, with the steepest decline for CZO additions. Nevertheless, YBCO films with these columnar defects exhibit significantly reduced J_c dependence on applied field. At 77 K, best properties are obtained for 1-2 vol.% BZO incorporation in the form of columns of self-assembled nanodots and nanorods in fields of 0.1-1.5 T.

Original language	English
Pages (from-to)	41-46
Number of pages	6
Journal	Physica C: Superconductivity and its Applications
Volume	457
Issue number	1-2
DOIs	https://doi.org/10.1016/j.physc.2007.02.017
State	Published - Jun 15 2007

Funding

Research was sponsored by the US Department of Energy, Office of Electricity and Delivery Reliability-Superconductor program, under contract DE-AC05-00OR22725 with UT-Battelle, LLC managing contractor for Oak Ridge National Laboratory. S. Kang, and J. Li thank Oak Ridge Associated Universities for a post-doctoral fellowship.

Funders	Funder number
US Department of Energy	DE-AC05-00OR22725
Oak Ridge National Laboratory

Keywords

Critical current density
Flux-pinning
Nanoparticles

Access to Document

10.1016/j.physc.2007.02.017

Cite this

Kang, S., Goyal, A., Li, J., Martin, P., Ijaduola, A., Thompson, J. R., & Paranthaman, M. (2007). Flux-pinning characteristics as a function of density of columnar defects comprised of self-assembled nanodots and nanorods in epitaxial YBa₂Cu₃O_7-δ films for coated conductor applications. Physica C: Superconductivity and its Applications, 457(1-2), 41-46. https://doi.org/10.1016/j.physc.2007.02.017

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title = "Flux-pinning characteristics as a function of density of columnar defects comprised of self-assembled nanodots and nanorods in epitaxial YBa2Cu3O7-δ films for coated conductor applications",

abstract = "Pure YBa2Cu3O7-δ (YBCO) and YBCO films with extended columnar defects comprised of self-assembled columns of nanodots and nanorods of BaZrO3 (BZO), CaZrO3 (CZO) and 8 mol.% Y2O3 stabilized ZrO2 (YSZ) were prepared by pulsed laser deposition on RABiTS templates of configuration CeO2/YSZ/Y2O3/Ni-W. Effects on increasing the size and density of columnar defects by varying the total volume fraction BZO, CZO or YSZ incorporations within the YBCO film are reported. BZO volume fraction was varied between 0% and 8%, CZO between 0% and 2% and YSZ 0-2%. The critical transition temperature (Tc) was found to linearly decrease with increase in vol.% of BZO, CZO and YSZ, with the steepest decline for CZO additions. Nevertheless, YBCO films with these columnar defects exhibit significantly reduced Jc dependence on applied field. At 77 K, best properties are obtained for 1-2 vol.% BZO incorporation in the form of columns of self-assembled nanodots and nanorods in fields of 0.1-1.5 T.",

keywords = "Critical current density, Flux-pinning, Nanoparticles",

author = "S. Kang and A. Goyal and J. Li and P. Martin and A. Ijaduola and Thompson, {J. R.} and M. Paranthaman",

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Kang, S, Goyal, A, Li, J, Martin, P, Ijaduola, A, Thompson, JR & Paranthaman, M 2007, 'Flux-pinning characteristics as a function of density of columnar defects comprised of self-assembled nanodots and nanorods in epitaxial YBa₂Cu₃O_7-δ films for coated conductor applications', Physica C: Superconductivity and its Applications, vol. 457, no. 1-2, pp. 41-46. https://doi.org/10.1016/j.physc.2007.02.017

Flux-pinning characteristics as a function of density of columnar defects comprised of self-assembled nanodots and nanorods in epitaxial YBa₂Cu₃O_7-δ films for coated conductor applications. / Kang, S.; Goyal, A.; Li, J. et al.
In: Physica C: Superconductivity and its Applications, Vol. 457, No. 1-2, 15.06.2007, p. 41-46.

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

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