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Journal of the Korean Ceramic Society 1988;25(6): 577. |
90K 초전도체 Gd1Ba2Cu3O9-x의 구조에 관한 연구 |
이성익, 권기정1, 이기봉, 박병규1, 박병학1, 신현준1 |
포항공과대학 1산업과학기술연구소 |
Structural Study of 90K Superconductor Gd1Ba2Cu3O9-x |
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ABSTRACT |
Gd1Ba2Cu3O9-x has been found to be a high Tc superconductor with a transitiion onset at 91K and zero resistance achieved at 87K. The structure as determined from x-ray diffraction is orthorhombic, with lattice constants b=3.842$pm$0.002$AA$, b=3.895$pm$0.003$AA$, and c=11.684$pm$0.007$AA$. The structural similarities between the Gd1Ba2Cu3O9-x compound and the well-studied single phase perovskite, Y1Ba2Cu3O9-x are discussed. A correlation between the observed x-ray spectrum and the effect of oxygen deficiencies in several of the unit cell planes is also discussed. |
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