Zobrazeno 1 - 10
of 46
pro vyhledávání: '"Katsukuni Yoshida"'
Autor:
Katsukuni Yoshida, Katsuya Ota
Publikováno v:
Journal of Physics: Conference Series. 43:413-416
Electrical characteristics of the Pr-doped cuprate Nd-123 (NdPr-123) have been investigated in reference to an inhomogeneous structure consisting of Nd-123 and Pr-123 phases. The superconductor-insulator (S-I) transition takes place there when Pr-con
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::30372af3df9d7cb60a1f3bd95a18efad
https://doi.org/10.1088/1742-6596/43/1/103
https://doi.org/10.1088/1742-6596/43/1/103
Autor:
Katsukuni Yoshida, Taro Sonobe
Publikováno v:
Physica C: Superconductivity and its Applications. 419:121-128
Effects of Sr-doping on PrBa2Cu3Oy have been investigated in particular reference to the relationship between a phase transition and electrical properties. The orthorhombic to tetragonal (O–T) phase transition has been found to occur at a certain c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8f3847a48bde598025b74be65e168c72
https://doi.org/10.1016/j.physc.2004.12.010
https://doi.org/10.1016/j.physc.2004.12.010
Autor:
Katsukuni Yoshida, Takuya Harada
Publikováno v:
Physica C: Superconductivity. 391:1-7
The behavior of the critical current density ( J c ) and critical temperature ( T c ) with rare-earth substitution at the Ba site in Y(Ba 2− x R x )Cu 3 O 7− δ (0⩽ x ⩽0.15) (for R=La, Pr, and Nd) has been investigated. In the case of magneti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ffb069649004ae01cff249f123114fac
https://doi.org/10.1016/s0921-4534(03)00810-4
https://doi.org/10.1016/s0921-4534(03)00810-4
Publikováno v:
Physica C: Superconductivity. 391:8-16
An enhancement effect on the critical current density, J c , due to Pr-doping has been found in YbBa 2 Cu 3 O 7− δ (Yb-123) system. For polycrystalline samples of Yb 1− x Pr x Ba 2 Cu 3 O 7− δ ((Yb,Pr)-123), the superconducting transition tem
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a6ab99a1ba27130c3027ba3844a28bde
https://doi.org/10.1016/s0921-4534(03)00811-6
https://doi.org/10.1016/s0921-4534(03)00811-6
Publikováno v:
Superconductor Science and Technology. 16:720-725
Transport properties (electrical resistance and diamagnetism) of composites consisting of the cuprates YBa2Cu3O7−δ and PrBa2Cu3O7−δ (YBCO and PBCO) have been found to be considerably governed by the presence of the third phase Y1−xPrxBa2Cu3O7
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1c352d168f9a7208f8b9ec3f2fa9e222
https://doi.org/10.1088/0953-2048/16/6/311
https://doi.org/10.1088/0953-2048/16/6/311
Autor:
Katsukuni Yoshida, Takuya Harada
Publikováno v:
Physica C: Superconductivity. 387:411-418
The effects of Pr and Ca co-doping on the critical current density J c and the critical temperature T c in (Y 1− x − y Pr x Ca y )Ba 2 Cu 3 O 7− δ have been investigated. Though Ca doping is expected to supply mobile holes to the CuO 2 plane,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dd2bfd92d75cd2a8daed0b9445006858
https://doi.org/10.1016/s0921-4534(02)02362-6
https://doi.org/10.1016/s0921-4534(02)02362-6
Publikováno v:
Journal of Non-Crystalline Solids. 315:107-113
We report the characteristic photoluminescence (PL) behavior in Ge1−xSx ( 0.60 ≦ x ≦ 0.90 ) chalogenide glasses. The compositional and excitation energy dependence of the PL spectra has been investigated. The PL spectra observed near 2.0 eV are
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f54eb2283dbfed2b60b8e6c11a8968d7
https://doi.org/10.1016/s0022-3093(02)01422-9
https://doi.org/10.1016/s0022-3093(02)01422-9
Autor:
Katsukuni Yoshida, Takuya Harada
Publikováno v:
Physica C: Superconductivity. 383:48-54
The effects of Pr-doping on the critical current density Jc and the critical temperature Tc in YBa2Cu3O7−δ (YBCO) have been investigated. In spite of the monotonic decrease in Tc with increasing Pr-concentration (x), the increasing of Jc occurs as
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b98e4f2d5e49a19793754c4ef988f417
https://doi.org/10.1016/s0921-4534(02)01261-3
https://doi.org/10.1016/s0921-4534(02)01261-3
Autor:
Katsukuni Yoshida, Takamasa Hayasaka
Publikováno v:
Superconductor Science and Technology. 15:1133-1139
Current-dependent resistance observed for complex cuprates Gd1−xPrxBa2Cu3Oy and Nd1−xPrxBa2Cu3Oy with Pr-concentration x ranging from 0 to 0.8 has been investigated in reference to the structural inhomogeneity. At Pr-concentration above the perco
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4f2f1f709984a4dd53370c23ae6576b8
https://doi.org/10.1088/0953-2048/15/7/326
https://doi.org/10.1088/0953-2048/15/7/326
Autor:
Katsukuni Yoshida
Publikováno v:
Physical Review B. 60:9325-9328
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6d65cedad4cd9a5073c3d6ef524737b0
https://doi.org/10.1103/physrevb.60.9325
https://doi.org/10.1103/physrevb.60.9325