YBa2Cu3Oxの結晶配向に関する研究(第一報)

概要

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An attempt to prepare the iron-doped Y-Ba-Cu polycrystalline oxides, in which the preferred planes of conductivity are oriented in a magnetic field, has been curried out. For the sintered samples with the composition of (1-y)[YBa2Cu3Ox]⋅Fe2O3 (y=0.15-0.7), the marked lowering of the conductivity was prior to the increase of the magnetization with increasing concentration of Fe atoms. When Y atoms in Y1-yFeyBa2Cu3Ox (y=0.1-0.3) was replaced by Fe atoms, the change of conductivity was slight and Tc dropped to a lower temperature. No noticeable difference in the conductivity measured between the direction perpendicular to the c-axis and the direction along to that in the crystal-oriented samples. The effect of the addition of Fe atoms on the temperature dependency of resistivity, the precipitation of other phases, the magnetude of magnetization and microstructure were also investigated.
社団法人粉体粉末冶金協会の論文