"Bismutov\u00E9 supravodi\u010De dopovan\u00E9 nano\u010D\u00E1sticemi st\u0159\u00EDbra"@cs . . . "Bi-based superconductors with nanosized silver dopant" . . . . . "Bi-based superconductors with nanosized silver dopant" . "22310" . . . "Bi-based superconductors with nanosized silver dopant"@en . "Jake\u0161, V\u00EDt" . "DE - Spolkov\u00E1 republika N\u011Bmecko" . "Byl studov\u00E1n vliv nano\u010D\u00E1stic st\u0159ibra na vznik a transportn\u00ED vlastnosti f\u00E1ze Bi-2223. Vzorky nomin\u00E1ln\u00EDho slo\u017Een\u00ED Bi3.2Pb0.8Sr4Ca5Cu7Ox byly p\u0159ipraveny reakc\u00ED v pevn\u00E9 f\u00E1zi. St\u0159\u00EDbro bylo p\u0159id\u00E1no v pod\u00EDlech 5, 10 a 15 hm.%. Ag pr\u00E1\u0161ek byl p\u0159id\u00E1v\u00E1n bu\u010F do v\u00FDchoz\u00ED reak\u010Dn\u00ED sm\u011Bsi nebo po druh\u00E9 kalcinaci. Kritick\u00E1 teplota v\u0161ech vzork\u016F se pohybovala v intervalu 108-109 K. Pro koncentraci 10 hm.% Ag byl pozorov\u00E1n vzr\u016Fst obsahu f\u00E1ze Bi-2223. Prodlou\u017Een\u00ED doby slinov\u00E1n\u00ED na 400 hodin zlep\u0161ilo kritickou proudovou hustotu nad hodnotu nedopovan\u00E9ho vzorku. Hodnoty porozity a hustoty uk\u00E1zaly zhutn\u011Bn\u00ED vzork\u016F s dlouhou dobou slinov\u00E1n\u00ED. Podle sn\u00EDmk\u016F SEM zlep\u0161uje p\u0159\u00EDdavek st\u0159\u00EDbra konektivitu zrn."@cs . . . "1610-1634" . "4"^^ . . "3" . "3"^^ . . . "[EE2865DE139B]" . "466867" . "Superconductors; doping; electrical properties"@en . "S\u00FDkorov\u00E1, Dagmar" . "P(GA203/05/0114), Z(MSM6046137302)" . "3"^^ . . "Physica Status Solidi (c)" . . "RIV/60461373:22310/06:00016963" . "3027-3030" . . "9" . "RIV/60461373:22310/06:00016963!RIV07-MSM-22310___" . . . "Bi-based superconductors with nanosized silver dopant"@en . . "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 . "Smr\u010Dkov\u00E1, Olga" . "Bismutov\u00E9 supravodi\u010De dopovan\u00E9 nano\u010D\u00E1sticemi st\u0159\u00EDbra"@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." .