アセト酢酸エチル錯体を原料とするYBCO超伝導前駆体の調製と性質

概要

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Preparation and their properties of the precursors capable of forming variously shaped YBCO supercon ducting oxides were investigated. The precursors were prepared as viscous liquid or powder by the reaction of ethyl acetoacetate complexes of metals (M (etac)_n . M =Y, Ba, Cu;n=2, 3) with triethanolamine (TEA) un der reflux of ethanol, followed by concentration of the solvent and heating in vacuo. The precursors were solu ble in alcohols, chloroform and THF. Since good spin nability was observed for the liquids or molten solu tions, continuous fibers, therefore, were prepared by melt spinning of the powders. YBa_2Cu_3O_<6.8> supercon ducting oxide of zero resistance ternperature of 88.2 K was obtained by heat treatment of the powders. A pos sible structure of precursor was estimated by the spec troscopic, elemental and GC analysis of the reaction products.
社団法人日本セラミックス協会の論文
1994-08-01