Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Radu Redac"'
Publikováno v:
Modern Physics Letters B. 20:1191-1198
AC susceptibility measurements have been done to determine the intergranular properties for some 123-superconducting ceramics. From the imaginary part of the complex susceptibility, χ″(T), the temperature dependence of the critical current density
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::732dec23e97e37204d1666b8a14a5d1d
https://doi.org/10.1142/s0217984906011554
https://doi.org/10.1142/s0217984906011554
Autor:
Teodor-Radu Redac
Publikováno v:
Modern Physics Letters B. 19:129-134
This paper presents experimental data obtained by its author on superconductive ceramics of type 1-2-3, with ytterbium as the element of rare earth. Thermal, electric and magnetic analyses are presented. The aim of the paper is to put in evidence the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fa3dfbcb5f488ebbee39ef5725ed9612
https://doi.org/10.1142/s0217984905008177
https://doi.org/10.1142/s0217984905008177
Autor:
Teodor-Radu Redac
Publikováno v:
Modern Physics Letters B. 18:1239-1245
The paper presents experimental electrical and magnetic data concerning the EuBa 2( Cu 1-x Ga x)3 O 7-d and Eu 1-x Ga x Ba 2 Cu 3 O 7-d compounds. We emphasized the effect of the substitution of copper and europium for gallium, as well as the effect
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::26a1a5339f67f0f32e60e0cb6ec787c4
https://doi.org/10.1142/s0217984904007724
https://doi.org/10.1142/s0217984904007724
Publikováno v:
Modern Physics Letters B. 14:285-290
The high-T c Y 1-x Zr x Ba 2 Cu 3 O 7-δ superconductive ceramic material series with x = 0.01, 0.05 and 0.10 was sintered. The system was investigated from the structural and magnetic points of view. The room temperature X-ray pattern shows only ort
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::495bab007080669522a260a023277943
https://doi.org/10.1142/s0217984900000355
https://doi.org/10.1142/s0217984900000355
Publikováno v:
Scopus-Elsevier
High-T c cuprates of "Bi-2223" bulk doped with Cr 0≤ x≤ 0.10 were prepared by the conventional solid state reaction method. The samples were investigated by electrical resistivity, Hall effect, Nernst effect, ac susceptibility and thermopower mea
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::029f064774495586c2512b5668beeeb8
https://doi.org/10.1142/s021798499900066x
https://doi.org/10.1142/s021798499900066x
Publikováno v:
Modern Physics Letters B. 11:593-597
The high-T c ( Eu 1-x Ga x) Ba 2 Cu 3 O 7-δ superconductors with x=0, 0.01, 0.02, 0.03, 0.06 and 0.09 were synthesized by a ceramic technique. The gallium concentration dependence of the lattice parameters was determined. A transition from orthorhom
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dc978905fb46b4d6cb9ddb1806f42b87
https://doi.org/10.1142/s0217984997000736
https://doi.org/10.1142/s0217984997000736
Publikováno v:
Physica B: Condensed Matter. :1097-1098
High- T c cuprates of “Bi-2223” bulk with Cr were prepared by the conventional solid-state reaction method. The samples have been investigated by electrical resistivity, Hall, Nernst effects, AC susceptibility and thermopower measurements in mixe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6394338a14a280806b4c8cc46392ad98
https://doi.org/10.1016/s0921-4526(99)02448-5
https://doi.org/10.1016/s0921-4526(99)02448-5
Publikováno v:
Physica C: Superconductivity and its Applications. :831-832
Different polycrystalline samples of high-T c superconducting compounds Y Ba 3-x Cu 3 O 7-δ ; Y 1-x Dy x Ba 2 Cu 3 O 7-δ and Y 1 Ba 2 Cu 3-x Ni x O 7-δ have been prepared and characterized. They have been investigated by dc magnetic susceptibility
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9da237c25a844893d043b57393190d12
https://doi.org/10.1016/0921-4534(89)91282-3
https://doi.org/10.1016/0921-4534(89)91282-3
Publikováno v:
Physica C: Superconductivity and its Applications. :1289-1290
The effect of Gd doping and of thermal history on the EPR spectra from Y1−xGdxBa2Cu3O7−δ ceramics and, for the first time, from Bi2−xGdxSr2Ca2Oz vitroceramics was investigated. The results were correlated with the superconducting properties of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::079b3cffcf6cf3617ac8bed6c1e17185
https://doi.org/10.1016/0921-4534(89)90697-7
https://doi.org/10.1016/0921-4534(89)90697-7
Publikováno v:
Studia Universitatis Babes-Bolyai, Physica. Jun2011, Vol. 1, p3-8. 6p. 3 Graphs.