High critical current density YBa2Cu3O7−δ films on surface-oxidized metallic substrates

Matsumoto, Kaname; Kim, Seokbeom; Yamagiwa, Katsuya; Koike, Yoshihiro; Hirabayashi, I.; Watanabe, T.; Uno, Naoki; Ikeda, M.

doi:10.1016/s0921-4534(00)00139-8

Cited by 40 publications

(12 citation statements)

References 8 publications

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“…Fig. 6 shows a SEM image of a Cu(200) surface cleaned in 30% nitric acid for 20 s. For oxidation of Cu substrates using a SOE process, cleanness of the original Cu surface is important, because the substrate surface treatment is crucial for obtaining a well-aligned oxide layer [13]. Fig.…”

Section: Resultsmentioning

confidence: 99%

Characterization of a Cube Textured ${\hbox{Cu}}_{2}\hbox{O}$ Buffer Layer on Cu Tapes for YBCO Coated Conductors

Kim

Sung²,

Han³

et al. 2007

IEEE Trans. Appl. Supercond.

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YBa 2 Cu 3 O X (YBCO) coated conductors have been fabricated on cube textured Cu or Cu-based alloy substrates using various buffer layers such as CeO 2 , ZrO 2 , etc. Fabrication of buffer layers on Cu substrates using surface-oxidation epitaxy (SOE) has the potential to reduce the process complexibility and make the coated conductor more cost effective. In this work, we fabricated cube textured Cu 2 O as a component buffer layer by thermal oxidation of cube textured Cu(200) substrates. A biaxially-aligned textured Cu 2 O layer was obtained for 1 min oxidation in air at 1000 C. Texture analysis was performed using X-ray Diffraction (XRD) analysis. Microstructural characteristics of the layer were determined by scanning electron microscopy (SEM). The experimental results suggested that the Cu 2 O can be a promising buffer layer for YBCO coated conductors from the viewpoint of the simplification of the process.

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Section: Resultsmentioning

confidence: 99%

Characterization of a Cube Textured ${\hbox{Cu}}_{2}\hbox{O}$ Buffer Layer on Cu Tapes for YBCO Coated Conductors

Kim

Sung²,

Han³

et al. 2007

IEEE Trans. Appl. Supercond.

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“…SOE technology has been successfully applied to PLD by Matsumoto et al . (2000b) and deposition of an MgO ‘cap layer’ and an YBCO layer led to superconducting properties very similar to those obtainable by the RABiTS process.…”

Section: Introductionmentioning

confidence: 90%

“…(2000b) and deposition of an MgO ‘cap layer’ and an YBCO layer led to superconducting properties very similar to those obtainable by the RABiTS process. It is, however, highly desirable to apply SOE to non‐vacuum buffer layer and YBCO deposition routes in order to further reduce the complexity of scale‐up and the cost of production (Matsumoto et al. , 2000b).…”

Section: Introductionmentioning

confidence: 99%

Characterization of textured NiO films for application as buffer layers in high temperature superconducting tapes

Woodcock

Abell

Hall

2002

Journal of Microscopy

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Textured NiO films have been grown, by thermal oxidation, on biaxially textured Ni substrates. The films have been characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and electron backscatter diffraction (EBSD). The XRD results showed two texture components, cube texture (001)[100] and (111) with out of plane orientation only. SEM showed much inhomogeneity of grain size on the sample surface. Analysis by EBSD revealed that coarse grained regions were cube textured and fine grained regions were <111> fibre textured. The ability to correlate textural and microstructural data is crucial to the optimization of textured NiO films for use in coated conductor technology.

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“…An intermediate treatment between recrystallization of the metal tape and the SOE process is necessary to remove the initial oxide layer built up during storage of Ni [8][9][10]. Detailed growth conditions for the formation of textured NiO layers have been examined by several groups [11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Fabrication of biaxial textured NiO on Ni in a one-step process

Staller

Gritzner

2008

Open Chemistry

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Abstract:Anovelmethodforthepreparationofbiaxialtexturednickeloxideoncommerciallyavailablenickelviaamodifiedsurfaceoxidation epitaxy(SOE)processhasbeendeveloped.Followingstudiesofdifferentheat-treatmentproceduresforbothtexturingofnickeland forthefabricationofnickeloxidethefollowingmethodwasfoundtoyieldthebestresults.Nickelwasfirsttexturedunderanargonhydrogenatmosphereat1000°Cfor120min,thenthetemperaturewasloweredto800°Candtheatmospherewaschangedtoargon with3ppmoxygen.Smoothandcrackfreec-axistexturedanda-balignedNiObufferlayerswithanout-of-planetextureof7.8°and anin-planetextureof9.4°weresuccessfullyproduced.Higheroxygenpartialpressureandtemperaturesresultedinincreasedsurface roughnessandexcessivegraingrowth.© Versita Warsaw and Springer-Verlag Berlin Heidelberg.

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High critical current density YBa2Cu3O7−δ films on surface-oxidized metallic substrates

Cited by 40 publications

References 8 publications

Characterization of a Cube Textured ${\hbox{Cu}}_{2}\hbox{O}$ Buffer Layer on Cu Tapes for YBCO Coated Conductors

Characterization of a Cube Textured ${\hbox{Cu}}_{2}\hbox{O}$ Buffer Layer on Cu Tapes for YBCO Coated Conductors

Characterization of textured NiO films for application as buffer layers in high temperature superconducting tapes

Fabrication of biaxial textured NiO on Ni in a one-step process

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