YBa_2Cu_3O_(7-y)超导体合成机理

材料研究学报, 1989, 3(4): 338-342.

YBa_2Cu_3O_(7-y)超导体合成机理

北京有色金属研究总院

关键词： YBa_2Cu_3O_(7-γ) , superconductor , synthetic mechanism , TG-DTA thermal analysis , X-ray diffraction

ON THE MECHANISM OF SYNTHESIS REACTION OF SUPERCONDUCTOR YBa_2Cu_3O_(7-y)

HUANG Aiqin LI Guoxun MA Shulan LI Guobin YU Zhongqin (General Research Institute of Nonferrous Metals) , null , null , null , null

Keywords： YBa_2Cu_3O_(7-(?)) , 超导体 , 合成机理 , TG-DTA 热分析 , X 射线衍射

采用TG-DTA 热分析和X 射线衍射相结合的方法,研究了由不同原料制取单一相YBa2-Cu_3O_(7-(?))超导体的合成反应机理。试验结果表明,YBa2Cu_3O_(7-(?))的形成经历两个反应阶段,首先形成BaCuO_2和Y_2Cu_2O_5,随后这两个二元复合氧化物化合形成YBa2Cu_3O_(7-(?))。各步反应温度受钡盐种类控制,采用Ba(NO_3)_2原料,在750℃即可表现出超导性,T_c 达86K。

The reaction mechanism during the synthesis of superconductorYBa_2 Cu_3 O_(7-(?)) has been investigated by TG-DTA thermal analysis and X-raydiffraction method.The starting materials used are carbonats,nitrades andcoprecipitation of oxalates of Y,Ba and Cu

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YBa_2Cu_3O_(7-y)超导体合成机理

ON THE MECHANISM OF SYNTHESIS REACTION OF SUPERCONDUCTOR YBa_2Cu_3O_(7-y)

参考文献