YBa_2Cu_3O_<7-y>セラミックスの超伝導特性に与える元素添加効果

概要

論文の詳細を見る
Element addition effects of YBa_2Cu_3O_<7-y> ceramics on the superconductivity have been studied. Fifty-two kinds of elements, and 163 compositions have been investigated but no element capable of improving the critical temperature (T_c) was found. Pb, Al and W were chosen additives and have been studied in detail about the changes in the superconducting properties and the crystal structures by the ratios of addition. Pb and W had almost no solubility in YBa_2Cu_3O_<7-y>. The crystal structure of YBa_2Cu_3O_<7-y> changed from orthorhombic to tetragonal by the addition of Al or W. T_c was lowered along with the change of the crystal structure.
社団法人日本セラミックス協会の論文
1988-04-01