Studies on the Stability and Structure of High Tc Y-Ba-Cu-O Superconductor with F Element

Abstract

Abstract: The samples of high T_c Y-Ba-Cu-Osuperconductor with Felement were prepared by using BaF₂,CuF₂,YF₃ instead of BaO,CuO,Y₂O₃ respectively.The substitutive ratio was about 45%. The zero-resistance temperature was 82.5～93.5K.By means of X-ray powder diffraction,infrared spectroscopy,difference thermal analysis,the structure and stability of the samples were investigated.The preliminary results show that only small amount of Felement entered the superconductive phase,and made the stability of the high T_c Y-Ba-Cu-Osuperconductor with Felement increasing greatly in the environment of water vapor and carbon dioxide.

Key words: Y-Ba-Cu-O superconductor with F, Stability, Structure

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ZHONG Shan, YU Yong-Qin, CHEN Long-Wu. Studies on the Stability and Structure of High T_c Y-Ba-Cu-O Superconductor with F Element[J]. Chem. J. Chinese Universities, 1996, 17(11): 1661.

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Studies on the Stability and Structure of High T_c Y-Ba-Cu-O Superconductor with F Element

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