Synthesis and superconducting properties of bscco including precipitates with high density

Umemura, Tomonari; Egawa, Kunihiko; Kinouchi, Shin‐ichi; Utsunomiya, Shin; Nojiri, Mihoko M.

doi:10.1080/01411599308203492

Cited by 14 publications

(4 citation statements)

References 5 publications

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“…Strontium-containing bioactive glasses have also garnered a lot of interest in the medical and materials science communities. , Bioactive glasses are surgically implanted at defect bone sites to effect bone repair and regeneration, and the inclusion of strontium is thought to give additional antiosteoporotic benefits similar to those gained from taking strontium supplements . Strontium ruthenate, Sr 2 RuO 4 , displays superconducting behavior, as do several other strontium-containing perovskites, e.g., BSCCO and La 2– x Sr x CuO 4 (LSCO) . SrTiO 3 -based perovskites such as Pb x Sr 1– x TiO 3 , Ba x Sr 1– x TiO 3 , and other materials such as SrBi 2 Ta 2 O 9 are of interest for the manufacture of capacitors and other electronics. , Strontium-containing perovskites have also recently been under investigation for use in fuel cells and in hybrid perovskite solar cells .…”

Section: Introductionmentioning

confidence: 99%

“…Strontium-containing materials have many applications, some old and some new. − For example, strontium salts are widely used in pyrotechnics to produce deep red colors, strontium aluminate is used in phosphorescent (“glow-in-the-dark”) paints, and SrAl 2 O 4 nanoparticles are a potential source of photoluminescent probes for environmental and biological diagnostic testing . Organic strontium compounds such as strontium citrate and strontium ranelate are used for the treatment of osteoporosis, and tablets containing strontium compounds are available over-the-counter at many supermarkets and pharmacies in North America.…”

Section: Introductionmentioning

confidence: 99%

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Solid-State ⁸⁷Sr NMR Spectroscopy at Natural Abundance and High Magnetic Field Strength

Faucher

Terskikh

et al. 2015

J. Phys. Chem. A

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Twenty-five strontium-containing solids were characterized via (87)Sr NMR spectroscopy at natural abundance and high magnetic field strength (B0 = 21.14 T). Strontium nuclear quadrupole coupling constants in these compounds are sensitive to the strontium site symmetry and range from 0 to 50.5 MHz. An experimental (87)Sr chemical shift scale is proposed, and available data indicate a chemical shift range of approximately 550 ppm, from -200 to +350 ppm relative to Sr(2+)(aq). In general, magnetic shielding increased with strontium coordination number. Experimentally measured chemical shift anisotropy is reported for stationary samples of solid powdered SrCl2·6H2O, SrBr2·6H2O, and SrCO3, with δaniso((87)Sr) values of +28, +26, and -65 ppm, respectively. NMR parameters were calculated using CASTEP, a gauge including projector augmented wave (GIPAW) DFT-based program, which addresses the periodic nature of solids using plane-wave basis sets. Calculated NMR parameters are in good agreement with those measured.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Solid-State ⁸⁷Sr NMR Spectroscopy at Natural Abundance and High Magnetic Field Strength

Faucher

Terskikh

et al. 2015

J. Phys. Chem. A

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“…Cooling of a peritectic melt permits preparation of Bi(Pb)2212 ± Ca 2 CuO 3 (10 mol.% ± 15 mol.%) composites with the Ca 2 CuO 3 inclusions (of size of several micrometres) uniformly distributed in the Bi(Pb)2212 phase. These composites exhibit an increased (by several times) critical current density at T 5 20 K. 143,144 Magnetooptical studies revealed pinning of magnetic vortices to the Ca 2 CuO 3 particles. 145 A considerable increase in J c within grains of sintered Bi2223 ± Ca 2 CuO 3 ceramics was also reported.…”

Section: Microcomposites Based On Phases Of the Bi ± (Pb) ± Sr ± Ca ±...mentioning

confidence: 99%

Microcomposites based on superconducting cuprates

Казин¹,

Tretyakov²

2003

Russ. Chem. Rev.

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Chemical aspects of the formation of microcomposites Chemical aspects of the formation of microcomposites based on superconducting cuprates are considered. The materials based on superconducting cuprates are considered. The materials are composed of a superconducting ceramic matrix and micro-or are composed of a superconducting ceramic matrix and micro-or nanoinclusions of the non-superconducting phase, which are nanoinclusions of the non-superconducting phase, which are uniformly distributed in the matrix. Requirements on the operat-uniformly distributed in the matrix. Requirements on the operating characteristics of the superconducting ceramics are described ing characteristics of the superconducting ceramics are described and routes to high critical current densites are outlined. Phase and routes to high critical current densites are outlined. Phase equilibria in the generic systems are considered. Physical and equilibria in the generic systems are considered. Physical and chemical criteria for the choice of phases that can form non-chemical criteria for the choice of phases that can form nonsuperconducting inclusions are proposed. Methods of prepara-superconducting inclusions are proposed. Methods of preparation and the microstructures and superconducting properties tion and the microstructures and superconducting properties of the composites based on cuprates RBa of the composites based on cuprates RBa 2 2 Cu Cu 3 3 O O 7 77 7d d (R is the (R is the rare-earth element) and on Bi rare-earth element) and on Bi 2 2 Sr Sr 2 2 CaCu CaCu 2 2 O O 8+ 8+d d and and (Bi,Pb) (Bi,Pb) 2 2 Sr Sr 2 2 Ca Ca 2 2 Cu Cu 3 3 O O 10+ 10+d d are considered. The bibliography are considered. The bibliography includes 247 references includes 247 references. .

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“…In Bi-2212 superconductor various foreign-phase inclusions have been introduced in order to improve flux pinning. Micron-size particles of secondary phases gave rise to a several-fold J c increase in melt-processed [1,2] and partially decomposed [3,4] ceramic samples. Substantial improvement of flux pinning was observed in silversheathed Bi-2212 tape with submicron SrZrO 3 inclusions [5] as well as in film and bulk Bi-2212 with aligned nanorods of MgO [6].…”

Section: Introductionmentioning

confidence: 99%

Phase compatibility and preparation of composite

Казин

Poltavets

Кузнецов

et al. 1998

Supercond. Sci. Technol.

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The chemical compatibility of the phase with was investigated, and a composite superconductor was prepared. Ceramic processing of the corresponding oxide and carbonate mixture at led to the two-phase species , while the solubility of In in Bi-2212 was less than 5 mol%. At indium appeared to be less soluble in the BSCCO melt, instead being concentrated in fine grains of phase suspended in the liquid. By slow crystallization of the melt the composite was obtained. The In-rich phase formed micron-sized rods which were both randomly embedded in Bi-2212 lamellas and agglomerated on the Bi-2212 grain boundaries. The presence of the indium-based surplus did not prevent Bi-2212 phase formation, had minor effect on and resulted in increase of flux pinning at K.

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Synthesis and superconducting properties of bscco including precipitates with high density

Cited by 14 publications

References 5 publications

Solid-State ⁸⁷Sr NMR Spectroscopy at Natural Abundance and High Magnetic Field Strength

Solid-State ⁸⁷Sr NMR Spectroscopy at Natural Abundance and High Magnetic Field Strength

Microcomposites based on superconducting cuprates

Phase compatibility and preparation of composite

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Synthesis and superconducting properties of bscco including precipitates with high density

Cited by 14 publications

References 5 publications

Solid-State 87Sr NMR Spectroscopy at Natural Abundance and High Magnetic Field Strength

Solid-State 87Sr NMR Spectroscopy at Natural Abundance and High Magnetic Field Strength

Microcomposites based on superconducting cuprates

Phase compatibility and preparation of composite

Contact Info

Product

Resources

About

Solid-State ⁸⁷Sr NMR Spectroscopy at Natural Abundance and High Magnetic Field Strength

Solid-State ⁸⁷Sr NMR Spectroscopy at Natural Abundance and High Magnetic Field Strength