Influence of different melt processings upon the microstructure and critical current of textured Y123

Monot, I.; Wang, J.; Delamare, M. P.; Provost, J.; Desgardin, G.

doi:10.1016/0921-4534(96)00345-0

Cited by 20 publications

(9 citation statements)

References 36 publications

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“…The average size of the YBaTa phase is about 4.2 (7 0.3) μm. It is well known that an intragranullar doping effectively acts as a pinning center [32]. The micrograph of the sample with 4 wt% of YBaTa shows the Y 2 BaCuO 5 (Y211) phase segregation.…”

Section: Resultsmentioning

confidence: 99%

Improvement on the melt-texturing performance of a (Y,Ta)0.5BaO3–YBa2Cu3Oy composite with superconductor applications

Bortolozo

Osório

Oliveira

et al. 2015

Ceramics International

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Section: Resultsmentioning

confidence: 99%

Improvement on the melt-texturing performance of a (Y,Ta)0.5BaO3–YBa2Cu3Oy composite with superconductor applications

Bortolozo

Osório

Oliveira

et al. 2015

Ceramics International

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“…Such reactions consume the 211 phase to form the 123 superconducting phase which inherently leads to the incorporation of a finer and much more homogeneous dispersion of 211 particles in the matrix as 123 grains grow within the films. Equivalent improvements in both the grain growth characteristics and the distribution of second-phase 211 particles have previously been observed in the processing of bulk YBCO materials by the PMP and SLMG routes [26][27][28][29].…”

Section: Microstructural Analysismentioning

confidence: 85%

Microstructure and transport current characterization of YBa₂Cu₃O_7-xthick films prepared by modified solid-liquid melt growth and powder melt process routes

Langhorn¹,

McGinn²

1999

Supercond. Sci. Technol.

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From the characterization of superconducting YBa2Cu3O7-x (YBCO) thick films processed by melt texturing on yttria-stabilized zirconia substrates from YBCO precursors it is clear that the properties are highly dependent on the precursor powder. Increased YBCO grain sizes have been induced in thick films processed from by modified solid-liquid melt growth (SLMG) and powder melt (PMP) processes with respect to those processed from pre-reacted YBCO materials. The SLMG and PMP routes utilize precursors consisting of BaCuO2-CuO flux material mixed with Y2O3 and Y2BaCuO5 respectively. Cross-sectional analysis of films textured by these routes shows a decreased Y2BaCuO5 size and an increased homogeneity within the matrix with respect to films processed from YBCO powder. Such microstructural improvements lead to an improvement of both the flux pinning and current-carrying characteristics of the processed YBCO films.

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“…The nominal composition corresponds to the final phase composites of Y123 + 0.4 Y211, which is widely believed to be an optimum ratio for refining of Y211 precipitates, hindering of liquidphase loss, improvement of stable morphologies, and enhancement of flux pinning. 1,17,18 After calcination in air at 900°C for 30 h with an intermediate grinding, the powders of 10 wt% Ag 2 O and 0.5 wt% Pt were added. The resultant powder was uniaxially pressed into a pellet 20 mm in diameter and 7 mm in thickness.…”

Section: Methodsmentioning

confidence: 99%

Effects of Nd123/MgO Thin Film and MgO Single-crystal Seeds in Isothermal Solidification of YBaCuO/Ag

Cai

Fujimoto

2000

J. Mater. Res.

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The seeding effects of (001) Nd123/MgO thin films and MgO single crystals were studied in isothermal solidification of YBa 2 Cu 3 O y composite with the additions of 40 mol% Y 2 BaCuO 5 , 10 wt% Ag, and 0.5 wt% Pt. Seeding with the Nd123/MgO thin film resulted in single-domain growth of Y123 crystal with a stable growth along the 〈100〉 direction, while seeding with MgO single crystal produced multidomain growth in which the dominant growth facet is rotated 45°about (100) plane of MgO. Multidomain growth in MgO seeded sample was suppressed by decreasing undercooling degree. The effects of undercooling degree and seed size on multidomain growth are discussed in view of classical nucleation and growth theory.

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Influence of different melt processings upon the microstructure and critical current of textured Y123

Cited by 20 publications

References 36 publications

Improvement on the melt-texturing performance of a (Y,Ta)0.5BaO3–YBa2Cu3Oy composite with superconductor applications

Improvement on the melt-texturing performance of a (Y,Ta)0.5BaO3–YBa2Cu3Oy composite with superconductor applications

Microstructure and transport current characterization of YBa₂Cu₃O_7-xthick films prepared by modified solid-liquid melt growth and powder melt process routes

Effects of Nd123/MgO Thin Film and MgO Single-crystal Seeds in Isothermal Solidification of YBaCuO/Ag

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Influence of different melt processings upon the microstructure and critical current of textured Y123

Cited by 20 publications

References 36 publications

Improvement on the melt-texturing performance of a (Y,Ta)0.5BaO3–YBa2Cu3Oy composite with superconductor applications

Improvement on the melt-texturing performance of a (Y,Ta)0.5BaO3–YBa2Cu3Oy composite with superconductor applications

Microstructure and transport current characterization of YBa2Cu3O7-xthick films prepared by modified solid-liquid melt growth and powder melt process routes

Effects of Nd123/MgO Thin Film and MgO Single-crystal Seeds in Isothermal Solidification of YBaCuO/Ag

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Microstructure and transport current characterization of YBa₂Cu₃O_7-xthick films prepared by modified solid-liquid melt growth and powder melt process routes