Pulsed laser deposition of YBCO coated conductor using Y<sub>2</sub>O<sub>3</sub>as the seed and cap layer

Barnes, Paul N.; Nekkanti, Rama; Haugan, T. J.; Campbell, T A; Yust, N. A.; Evans, J. M.

doi:10.1088/0953-2048/17/8/001

Cited by 30 publications

(13 citation statements)

References 15 publications

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“…These advancements have been made primarily using Ni or Ni-alloy substrates, especially Ni-W [2][3][4]. An attractive alternative to Ni-based substrates may be Cu-based substrates since copper is six times cheaper than nickel on a kilogram per kilogram basis.…”

Section: Introductionmentioning

confidence: 99%

Biaxially textured copper and copper–iron alloy substrates for use in YBa₂Cu₃O_7−xcoated conductors

Varanasi

Barnes

Yust

2005

Supercond. Sci. Technol.

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The public reporting burden for this collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing the collection of information. Send comments regarding this burden estimate or any other aspect of this collection of information, including suggestions for reducing this burden, to Department of Defense, Washington Headquarters Services, Directorate for Information SPONSORING/MONITORING AGENCY NAME(S) AND ADDRESS(ES) 10. SPONSORING/MONITORING AGENCY ACRONYM(S)AFRL-PR-WP Propulsion Directorate Air Force Research Laboratory Air Force Materiel Command Wright-Patterson AFB, OH 45433-7251 SPONSORING/MONITORING AGENCY REPORT NUMBER(S) AFRL-PR-WP-TP-2006-218 DISTRIBUTION/AVAILABILITY STATEMENTApproved for public release; distribution is unlimited. SUPPLEMENTARY NOTESJournal article postprint published in Superconducting Science Technology, Vol. 19 (2006), publishers IOP Publishing LTD.© 2006 IOP Publishing LTD. This work is copyrighted. One or more of the authors is a U.S. Government employee working within the scope of their Government job; therefore, the U.S. Government is joint owner of the work and has the right to copy, distribute, and use the work. All other rights are reserved by the copyright owner.PAO Case Number: ASC 04-1255, 16 Nov 2004. ABSTRACTCopper and Cu-Fe (Fe ~ 2.35 wt%) alloy substrates were thermo-mechanically processed and the biaxial texture development, magnetic properties, yield strength, and electrical resistivity were studied and compared to determine their suitability as substrates for high-temperature superconducting coated conductor applications. Average full width half maximum (FWHM) of 5.5° in Phi scans (in-plane alignment), and 6.6° in omega scans (out-of-plane alignment) was obtained in copper samples. Cu-Fe samples showed 5.9° FWHM in Phi scans and 5.9° in omega scans. Even with the presence of 2.35% Fe in the Cu-alloy, the saturation magnetization (M sat ) value was found to be 4.27 emu g −1 at 5 K, which is less than in Ni samples by an order of magnitude and comparable to that of Ni-9 at.% W substrates. The yield strength of the annealed Cu-Fe alloy substrate was found to be at least two times higher than that of similarly annealed copper substrates. The electrical resistivity of Cu-Fe alloy was found to be an order of magnitude higher than that of pure copper at 77 K. SUBJECT TERMS AbstractCopper and Cu-Fe (Fe ∼ 2.35 wt%) alloy substrates were thermo-mechanically processed and the biaxial texture development, magnetic properties, yield strength, and electrical resistivity were studied and compared to determine their suitability as substrates for high-temperature superconducting coated conductor applications. Average full width half maximum (FWHM) of 5.5• in Phi scans (in-plane alignment), and 6.6• in omega scans (out-of-plane alignment) was obtained in copper samples. Cu-Fe samples showed 5...

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Section: Introductionmentioning

confidence: 99%

Biaxially textured copper and copper–iron alloy substrates for use in YBa₂Cu₃O_7−xcoated conductors

Varanasi

Barnes

Yust

2005

Supercond. Sci. Technol.

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“…A final YBCO layer was then grown on the buffer layers. The deposition conditions used for the various layers are discussed elsewhere [18]. The total thickness of both layers was 50 nm, YSZ was 500 nm, and the YBCO layer was 300 nm.…”

Section: Methodsmentioning

confidence: 99%

Use of Ultrasonic Force Microscopy to Image the Interior Nanoparticles in ${\rm YBa}_{2}{\rm Cu}_{3}{\rm O}_{7-{\rm x}}$ Films

Varanasi

Nalladega

Sathish

et al. 2007

IEEE Trans. Appl. Supercond.

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Nanoparticles present in the interior of YBa 2 Cu 3 O 7 x (YBCO) films were successfully imaged for the first time by using an ultrasonic force microscope (UFM), which can also operate as a conventional atomic force microscope (AFM).Nanoparticles of Y 2 BaCuO 5 and BaSnO 3 were introduced into YBCO films using pulsed laser ablation to improve critical current density via enhanced flux pinning. The scanning speed and ultrasonic frequencies in the range of 300-500 kHz were optimized for each sample such that the nanometer sized particles on the surface as well as from the film interior can be imaged with good contrast and resolution. UFM and AFM scans taken of the same locations were compared to show the advantages of using UFM over AFM. We demonstrate that UFM can be used nondestructively to both characterize the interior nanoparticles introduced in YBCO films and provide high resolution images of the screw dislocation induced terraces present in the films.

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“…The cube-on-cube lattice mismatch between the YSZ substrate and the Y 2 O 3 film is calculated as d = (a Y2O3 -2*a YSZ ) / (2*a YSZ ) = 3.5%. The inverse system, YSZ on Y 2 O 3 , has been successfully deposited by PLD with an epitaxial relationship [15]. Additionally, bixbyite In 2 O 3 and Sn-doped In 2 O 3 (ITO) have been deposited on YSZ as epitaxial layers utilizing oxygen-plasma-assisted molecular beam epitaxy [14,16] and pulsed laser deposition [17,18].…”

Section: Y 2 O 3 On Yszmentioning

confidence: 99%

Epitaxial Fe/Y2O3 interfaces as a model system for oxide-dispersion-strengthened ferritic alloys

Kaspar

Bowden

Wang

et al. 2015

Journal of Nuclear Materials

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The fundamental mechanisms underlying the superior radiation tolerance properties of oxidedispersion-strengthened ferritic steels and nanostructured ferritic alloys are poorly understood. Thin film heterostructures of Fe/Y 2 O 3 can serve as a model system for fundamental studies of radiation damage. Epitaxial thin films of Y 2 O 3 were deposited by pulsed laser deposition on 8% Y:ZrO 2 (YSZ) substrates with (100), (110), and (111) orientation. Metallic Fe was subsequently deposited by molecular beam epitaxy. Characterization by x-ray diffraction and Rutherford backscattering spectrometry in the channeling geometry revealed a degree of epitaxial or axiotaxial orientation for Fe(211) deposited on Y 2 O 3 (110)/YSZ(110). In contrast, Fe on Y 2 O 3 (111)/YSZ(111) was fully polycrystalline, and Fe on Y 2 O 3 (100)/YSZ(100) exhibited out-ofplane texture in the [110] direction with little or no preferential in-plane orientation. Scanning transmission electron microscopy imaging of Fe(211)/Y 2 O 3 (110)/YSZ(110) revealed a strongly islanded morphology for the Fe film, with no epitaxial grains visible in the cross-sectional sample. Well-ordered Fe grains with no orientation to the underlying Y 2 O 3 were observed.Well-ordered crystallites of Fe with both epitaxial and non-epitaxial orientations on Y 2 O 3 are a promising model system for fundamental studies of radiation damage phenomena. This is illustrated with preliminary results of He bubble formation following implantation with a helium ion microscope. He bubble formation is shown to preferentially occur at the Fe/Y 2 O 3 interface.

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Pulsed laser deposition of YBCO coated conductor using Y₂O₃as the seed and cap layer

Cited by 30 publications

References 15 publications

Biaxially textured copper and copper–iron alloy substrates for use in YBa₂Cu₃O_7−xcoated conductors

Biaxially textured copper and copper–iron alloy substrates for use in YBa₂Cu₃O_7−xcoated conductors

Use of Ultrasonic Force Microscopy to Image the Interior Nanoparticles in ${\rm YBa}_{2}{\rm Cu}_{3}{\rm O}_{7-{\rm x}}$ Films

Epitaxial Fe/Y2O3 interfaces as a model system for oxide-dispersion-strengthened ferritic alloys

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Pulsed laser deposition of YBCO coated conductor using Y2O3as the seed and cap layer

Cited by 30 publications

References 15 publications

Biaxially textured copper and copper–iron alloy substrates for use in YBa2Cu3O7−xcoated conductors

Biaxially textured copper and copper–iron alloy substrates for use in YBa2Cu3O7−xcoated conductors

Use of Ultrasonic Force Microscopy to Image the Interior Nanoparticles in ${\rm YBa}_{2}{\rm Cu}_{3}{\rm O}_{7-{\rm x}}$ Films

Epitaxial Fe/Y2O3 interfaces as a model system for oxide-dispersion-strengthened ferritic alloys

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Product

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Pulsed laser deposition of YBCO coated conductor using Y₂O₃as the seed and cap layer

Biaxially textured copper and copper–iron alloy substrates for use in YBa₂Cu₃O_7−xcoated conductors

Biaxially textured copper and copper–iron alloy substrates for use in YBa₂Cu₃O_7−xcoated conductors