Addition of alternate phase nanoparticle dispersions to enhance flux pinning of Y-Ba-Cu-O thin films

Timothy J. Haugan; Paul N. Barnes; Timothy A. Campbell; Julianna M. Evans; Joseph W. Kell; Lyle B. Brunke; John P. Murphy; Chakrapani Varanasi; Iman Maartense; Winnie Wong-Ng; Lawrence P. Cook

doi:10.1109/TASC.2005.849427

Addition of alternate phase nanoparticle dispersions to enhance flux pinning of Y-Ba-Cu-O thin films

Timothy J. Haugan, Paul N. Barnes, Timothy A. Campbell, Julianna M. Evans, Joseph W. Kell, Lyle B. Brunke, John P. Murphy, Chakrapani Varanasi, Iman Maartense, Winnie Wong-Ng, Lawrence P. Cook

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9 Scopus citations

Abstract

Nanoparticle dispersions of various phases were added to YBa ₂Cu₃O_7-d (YBCO or 123) thin films by multilayer pulsed laser deposition, to determine their effect on flux pinning. The different pinning materials examined include Y₂BaCuO₂ (Y211 or green-phase), La₂BaCuO₅ (La211 or brown-phase), Y₂O₃, CeO₂, and MgO, with lattice constant mismatches varying from 0.5% to 12% with respect to YBCO. Y211 and Y ₂O₃ provided significant pinning increases at temperatures of 65 K and 77 K, however other phases provided enhancements only at 65 K (for CeO₂ and La211) for limited range of applied field strengths. An interesting correlation between T_c transition widths and pinning strengths was observed. The additions produced markedly different nanoparticle and film microstructures, as well as superconducting properties.

Original language	English (US)
Pages (from-to)	3770-3773
Number of pages	4
Journal	IEEE Transactions on Applied Superconductivity
Volume	15
Issue number	2 PART III
DOIs	https://doi.org/10.1109/TASC.2005.849427
State	Published - Jun 2005
Externally published	Yes

Bibliographical note

Funding Information:
Manuscript received October 5, 2004. This work was supported in part by the U.S. Air Force Office of Scientific Research and the Air Force Research Laboratory.

Keywords

Flux pinning
High temperature superconductor
Nanoparticle
YBa CuO thin film

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Haugan, T. J., Barnes, P. N., Campbell, T. A., Evans, J. M., Kell, J. W., Brunke, L. B., Murphy, J. P., Varanasi, C., Maartense, I., Wong-Ng, W., & Cook, L. P. (2005). Addition of alternate phase nanoparticle dispersions to enhance flux pinning of Y-Ba-Cu-O thin films. IEEE Transactions on Applied Superconductivity, 15(2 PART III), 3770-3773. https://doi.org/10.1109/TASC.2005.849427

Haugan, TJ, Barnes, PN, Campbell, TA, Evans, JM, Kell, JW, Brunke, LB, Murphy, JP, Varanasi, C, Maartense, I, Wong-Ng, W & Cook, LP 2005, 'Addition of alternate phase nanoparticle dispersions to enhance flux pinning of Y-Ba-Cu-O thin films', IEEE Transactions on Applied Superconductivity, vol. 15, no. 2 PART III, pp. 3770-3773. https://doi.org/10.1109/TASC.2005.849427

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abstract = "Nanoparticle dispersions of various phases were added to YBa 2Cu3O7-d (YBCO or 123) thin films by multilayer pulsed laser deposition, to determine their effect on flux pinning. The different pinning materials examined include Y2BaCuO2 (Y211 or green-phase), La2BaCuO5 (La211 or brown-phase), Y2O3, CeO2, and MgO, with lattice constant mismatches varying from 0.5% to 12% with respect to YBCO. Y211 and Y 2O3 provided significant pinning increases at temperatures of 65 K and 77 K, however other phases provided enhancements only at 65 K (for CeO2 and La211) for limited range of applied field strengths. An interesting correlation between Tc transition widths and pinning strengths was observed. The additions produced markedly different nanoparticle and film microstructures, as well as superconducting properties.",

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AU - Wong-Ng, Winnie

AU - Cook, Lawrence P.

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N2 - Nanoparticle dispersions of various phases were added to YBa 2Cu3O7-d (YBCO or 123) thin films by multilayer pulsed laser deposition, to determine their effect on flux pinning. The different pinning materials examined include Y2BaCuO2 (Y211 or green-phase), La2BaCuO5 (La211 or brown-phase), Y2O3, CeO2, and MgO, with lattice constant mismatches varying from 0.5% to 12% with respect to YBCO. Y211 and Y 2O3 provided significant pinning increases at temperatures of 65 K and 77 K, however other phases provided enhancements only at 65 K (for CeO2 and La211) for limited range of applied field strengths. An interesting correlation between Tc transition widths and pinning strengths was observed. The additions produced markedly different nanoparticle and film microstructures, as well as superconducting properties.

AB - Nanoparticle dispersions of various phases were added to YBa 2Cu3O7-d (YBCO or 123) thin films by multilayer pulsed laser deposition, to determine their effect on flux pinning. The different pinning materials examined include Y2BaCuO2 (Y211 or green-phase), La2BaCuO5 (La211 or brown-phase), Y2O3, CeO2, and MgO, with lattice constant mismatches varying from 0.5% to 12% with respect to YBCO. Y211 and Y 2O3 provided significant pinning increases at temperatures of 65 K and 77 K, however other phases provided enhancements only at 65 K (for CeO2 and La211) for limited range of applied field strengths. An interesting correlation between Tc transition widths and pinning strengths was observed. The additions produced markedly different nanoparticle and film microstructures, as well as superconducting properties.

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Addition of alternate phase nanoparticle dispersions to enhance flux pinning of Y-Ba-Cu-O thin films

Abstract

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Keywords

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