About: Bi-based superconductors with nanosized silver dopant     Goto   Sponge   NotDistinct   Permalink

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Description
  • Byl studován vliv nanočástic střibra na vznik a transportní vlastnosti fáze Bi-2223. Vzorky nominálního složení Bi3.2Pb0.8Sr4Ca5Cu7Ox byly připraveny reakcí v pevné fázi. Stříbro bylo přidáno v podílech 5, 10 a 15 hm.%. Ag prášek byl přidáván buď do výchozí reakční směsi nebo po druhé kalcinaci. Kritická teplota všech vzorků se pohybovala v intervalu 108-109 K. Pro koncentraci 10 hm.% Ag byl pozorován vzrůst obsahu fáze Bi-2223. Prodloužení doby slinování na 400 hodin zlepšilo kritickou proudovou hustotu nad hodnotu nedopovaného vzorku. Hodnoty porozity a hustoty ukázaly zhutnění vzorků s dlouhou dobou slinování. Podle snímků SEM zlepšuje přídavek stříbra konektivitu zrn. (cs)
  • The effect of nanosized silver on formation and transport properties of Bi-2223 phase was studied. Samples with nominal composition Bi3.2Pb0.8Sr4Ca5Cu7Ox were prepared by solid state synthesis. Ag as additive was used in three different weight percentage 5, 10 and 15. Ag powder was added to the initial mixture or after second calcination. All samples have critical temperature Tc in the range 108-109 K. An increase of the Bi-2223 phase content was observed at Ag concentration 10 wt%. Prolonged sintering time (400 h) improved critical current density Jc(77) above the value of the undoped sample. The values of porosity and density of the long sintered samples demonstrated their densification. The SEM micrographs have shown that addition of the silver improves the connectivity between the grains.
  • The effect of nanosized silver on formation and transport properties of Bi-2223 phase was studied. Samples with nominal composition Bi3.2Pb0.8Sr4Ca5Cu7Ox were prepared by solid state synthesis. Ag as additive was used in three different weight percentage 5, 10 and 15. Ag powder was added to the initial mixture or after second calcination. All samples have critical temperature Tc in the range 108-109 K. An increase of the Bi-2223 phase content was observed at Ag concentration 10 wt%. Prolonged sintering time (400 h) improved critical current density Jc(77) above the value of the undoped sample. The values of porosity and density of the long sintered samples demonstrated their densification. The SEM micrographs have shown that addition of the silver improves the connectivity between the grains. (en)
Title
  • Bi-based superconductors with nanosized silver dopant
  • Bi-based superconductors with nanosized silver dopant (en)
  • Bismutové supravodiče dopované nanočásticemi stříbra (cs)
skos:prefLabel
  • Bi-based superconductors with nanosized silver dopant
  • Bi-based superconductors with nanosized silver dopant (en)
  • Bismutové supravodiče dopované nanočásticemi stříbra (cs)
skos:notation
  • RIV/60461373:22310/06:00016963!RIV07-MSM-22310___
http://linked.open.../vavai/riv/strany
  • 3027-3030
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • P(GA203/05/0114), Z(MSM6046137302)
http://linked.open...iv/cisloPeriodika
  • 9
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
http://linked.open.../riv/druhVysledku
http://linked.open...iv/duvernostUdaju
http://linked.open...titaPredkladatele
http://linked.open...dnocenehoVysledku
  • 466867
http://linked.open...ai/riv/idVysledku
  • RIV/60461373:22310/06:00016963
http://linked.open...riv/jazykVysledku
http://linked.open.../riv/klicovaSlova
  • Superconductors; doping; electrical properties (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...odStatuVydavatele
  • DE - Spolková republika Německo
http://linked.open...ontrolniKodProRIV
  • [EE2865DE139B]
http://linked.open...i/riv/nazevZdroje
  • Physica Status Solidi (c)
http://linked.open...in/vavai/riv/obor
http://linked.open...ichTvurcuVysledku
http://linked.open...cetTvurcuVysledku
http://linked.open...vavai/riv/projekt
http://linked.open...UplatneniVysledku
http://linked.open...v/svazekPeriodika
  • 3
http://linked.open...iv/tvurceVysledku
  • Jakeš, Vít
  • Smrčková, Olga
  • Sýkorová, Dagmar
http://linked.open...n/vavai/riv/zamer
issn
  • 1610-1634
number of pages
http://localhost/t...ganizacniJednotka
  • 22310
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