论文部分内容阅读
Bednorz 和 M(?)iller~([1])关于 La-Ba-Cu-的氧化物可能具有高临界温度超导电性的报道掀起了人们对这种新氧化物超导体研究的高潮,在短短几个月中就成功地合成了临界温度在液氮温区以上的 Ba-Ln-Cu-O-(Ln=Y 等稀土元素)超导体系~([2])。由于新的氧化物超导体是用固态反应制备的,烧结工艺对样品的超导电性将起重要作用。实验发现氧环境对样品的超导电性有决定性的作用,烧结过程中氧环境的选择曾引起人们的争论。因此,弄清氧环境与样品超导电性的关系是十分必要的。实验发现样品的超导电性
Bednorz and Möller [1]) reports that La-Ba-Cu-based oxides may have supercritical properties at high critical temperature have led to the climax of this new oxide superconductor study. In a few months, Ba-Ln-Cu-O- (Ln = Y and other rare earth elements) superconducting system ~ ([2]) with critical temperature above the liquid nitrogen temperature was successfully synthesized. Since the new oxide superconductor is prepared by a solid state reaction, the sintering process will play an important role in the superconductivity of the sample. The experiment found that the oxygen environment has a decisive effect on the superconductivity of the samples, and the choice of the oxygen environment during the sintering process has caused people’s debate. Therefore, it is necessary to understand the relationship between oxygen environment and sample superconductivity. The experiment found the superconductivity of the sample