Magnetic extraction of superconducting grains from ceramic combinatorial syntheses

Willems, J.; Pérez, Daniel Omar; Couderc, Gaëtan; Trusch, Bernhard; Dessauges, Luc; Labat, Gaël; Hulliger, Jürg

doi:10.1016/j.solidstatesciences.2008.05.018

Cited by 7 publications

(13 citation statements)

References 18 publications

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“…As a test of our procedure, we first investigated a combinatorial ceramic sample made of BaO 2 /Y 2 O 3 /CuO obtained by a random neck synthesis. [3] This system was recently investigated by MOI, [16] which showed local formation of YBa 2 Cu 3 O 7 . Figure 6 shows the temperature-dependent SSM analysis of local superconductivity in this sample.…”

Section: Application Of Ssm To a Test Samplementioning

confidence: 99%

“…For magnetic separation we used equipment previously described in detail. [3,19] A U-shaped iron wire of 500 mm diameter allowed us to capture some ZFC superconducting grains in a mixture of liquid methane/nitrogen. Superconductive particles aligned perpendicular to the wire were transferred into a small Cu tube attached to one end of the wire [3] for removal from the setup after warming up.…”

Section: Bulk Squid Measurements Magnetic Separation and X-ray Analmentioning

confidence: 99%

“…[3,19] A U-shaped iron wire of 500 mm diameter allowed us to capture some ZFC superconducting grains in a mixture of liquid methane/nitrogen. Superconductive particles aligned perpendicular to the wire were transferred into a small Cu tube attached to one end of the wire [3] for removal from the setup after warming up. The grains collected in this way were analyzed by single-crystal Xray diffraction (Oxford Diffraction SuperNova area-detector diffrac-tometer1) by using mirror optics and monochromated Mo Ka radiation (l = 0.71073 ).…”

Section: Bulk Squid Measurements Magnetic Separation and X-ray Analmentioning

confidence: 99%

“…Later, we applied this procedure to the formation of YBa 2 Cu 3 O 7 [3] to reveal local superconductivity in inhomogeneous ceramic samples made of the three oxides. On the basis of these previous syntheses, [1][2][3] we can assume that the concept is feasible in principle. However, open questions remain: Will such a system ever reach a stationary state?…”

Section: Introductionmentioning

confidence: 99%

“…Emission of luminescence or second‐harmonic light demonstrated localized product formation in ceramic samples. Later, we applied this procedure to the formation of YBa 2 Cu 3 O 7 3 to reveal local superconductivity in inhomogeneous ceramic samples made of the three oxides. On the basis of these previous syntheses,1–3 we can assume that the concept is feasible in principle.…”

Section: Introductionmentioning

confidence: 99%

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Scanning SQUID Microscopy of Local Superconductivity in Inhomogeneous Combinatorial Ceramics

Iranmanesh¹,

Stir²,

Kirtley³

et al. 2014

Chemistry A European J

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Although combinatorial solid-state chemistry promises to be an efficient way to search for new superconducting compounds, the problem of determining which compositions are strongly diamagnetic in a mixed-phase sample is challenging. By means of reactions in a system of randomly mixed starting components (Ca, Sr, Ba, La, Y, Pb, Bi, Tl, and Cu oxides), samples were produced that showed an onset of diamagnetic response above 115 K in bulk measurements. Imaging of this diamagnetic response in ceramic samples by scanning SQUID microscopy (SSM) revealed local superconducting areas with sizes down to as small as the spatial resolution of a few micrometers. In addition, locally formed superconducting matter was extracted from mixed-phase samples by magnetic separation. The analysis of single grains (d<80 μm) by X-ray diffraction, elemental analysis, and bulk SQUID measurements allowed Tl2Ca3Ba2Cu4O12, TlCaBaSrCu2O(7-δ), BaPb(0.5)Bi(0.25)Tl(0.25)O(3-δ), TlBa2Ca2Cu3O9, Tl2Ba2CaCu2O8, and YBa2Cu3O7 phases to be identified. SSM, in combination with other diagnostic techniques, is therefore shown to be a useful instrument to analyze inhomogeneous reaction products in the solid-state chemistry of materials showing magnetic properties.

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Section: Application Of Ssm To a Test Samplementioning

confidence: 99%

Section: Bulk Squid Measurements Magnetic Separation and X-ray Analmentioning

confidence: 99%

Section: Bulk Squid Measurements Magnetic Separation and X-ray Analmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Scanning SQUID Microscopy of Local Superconductivity in Inhomogeneous Combinatorial Ceramics

Iranmanesh¹,

Stir²,

Kirtley³

et al. 2014

Chemistry A European J

Self Cite

View full text Add to dashboard Cite

show abstract

Ceramic combinatorial syntheses exploring the chemical diversity of metal oxides

Iranmanesh

Hulliger

2016

Progress in Solid State Chemistry

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Ceramic Tl-oxide based superconductors reinvestigated by magnetic separation technique and SQUID measurements

Mogare

Landau

Guérin

et al. 2011

Solid State Sciences

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Magnetic extraction of superconducting grains from ceramic combinatorial syntheses

Cited by 7 publications

References 18 publications

Scanning SQUID Microscopy of Local Superconductivity in Inhomogeneous Combinatorial Ceramics

Scanning SQUID Microscopy of Local Superconductivity in Inhomogeneous Combinatorial Ceramics

Ceramic combinatorial syntheses exploring the chemical diversity of metal oxides

Ceramic Tl-oxide based superconductors reinvestigated by magnetic separation technique and SQUID measurements

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