Zobrazeno 1 - 6
of 6
pro vyhledávání: '"Yasuhiro Murakoshi"'
Publikováno v:
Physica C: Superconductivity. 246:385-390
Single-phase Bi 2.2 (Sr 0.9− y Ca y ) 2 Ca 1.0 Cu 2.0 O 8.1+ z ( y = 0 to 0.4) was synthesized and changes in the environment around apical oxygen (O ap ) induced by substitution of the Sr sites by Ca were examined. By decreasing the z value, the T
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::28b15ab5315f5def514a968936f79345
https://doi.org/10.1016/0921-4534(95)00154-9
https://doi.org/10.1016/0921-4534(95)00154-9
Publikováno v:
Solid State Ionics. :442-445
The observed rise in the value of T c in Bi 2201 and 2212 phases by annealing in absence of oxygen is discussed in connection with excess charge, Cu valence and oxygen position around Cu. It is proposed that the movement of the apical oxygen of CuO 2
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1c98b09dead1bad827170bc7ccf5a553
https://doi.org/10.1016/0167-2738(92)90413-j
https://doi.org/10.1016/0167-2738(92)90413-j
Publikováno v:
Physica C: Superconductivity. 178:71-74
The observed changes in the value of T c in the Bi 2201 phase are discussed in connection with the total valence of the system, Bi and Cu valence, and its lattice structure. Annealing the Bi 2201 phase, in the absence of oxygen (in N 2 or in Ar) lead
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::aaaf3d3188b937636e84f9f09a03a3e9
https://doi.org/10.1016/0921-4534(91)90159-v
https://doi.org/10.1016/0921-4534(91)90159-v
Publikováno v:
Advances in Superconductivity III ISBN: 9784431681434
Superconductive property of the Bi 2201 phase is studied. The observed changes in the value of Tc is discussed in connection with the total valence of the system (the total valence), Bi and Cu valence, and its lattice structure. Nitrogen annealing le
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::88bf5a2c4b89c2eba294a0766f7d2757
https://doi.org/10.1007/978-4-431-68141-0_89
https://doi.org/10.1007/978-4-431-68141-0_89
Autor:
Yasuhiro Murakoshi, Katsuro Okuyama, Rika Sekine, Kohki Yamada, Shiro Kambe, Maki Kawai, Shigetoshi Ohshima
Publikováno v:
Physica C: Superconductivity. 190:139-140
Excess charge, Bi and Cu valences are discussed in connection with La substitution for Sr in Bi 2201 phase and with Y substitution for Ca in the Bi 2212 phase. For the 2201 and the 2212 phases, the effect of substitution amount on oxygen content and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::69228508b8b8417a5176e24fd5b4610d
https://doi.org/10.1016/s0921-4534(05)80228-x
https://doi.org/10.1016/s0921-4534(05)80228-x
Publikováno v:
Physica C: Superconductivity. :923-924
Tc of the Bi 2201 system is known to increase by annealing in the absence of oxygen. In order to understand the changes of the geometric or electronic structure in CuO 2 plane, the energy structure of Bi system is studied by Cu K-edge XANES. For the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c16fc51789a0dace90381aef5477362f
https://doi.org/10.1016/0921-4534(91)91685-w
https://doi.org/10.1016/0921-4534(91)91685-w