论文部分内容阅读
一、全世界范围掀起了超导热1986年4月美国国际商用机器公司(IBM)所属瑞士苏黎世研究所的两位物理学家米勒(K.A.Mul1er)和贝德诺尔茨(J.G.Bednorz)采用钡镧铜氧体系陶瓷化合物获得了转变温度为30K左右的超导体.他们不但首次突破了1972年美国科学家用铌三锗材料获得23.2K以来保持了14年的超导温度纪录;而且,更重要的是:他们从人们意想不到的“绝缘体”一陶瓷材料中获得了超导体.他们的创造性工作在1986年12月得到美、日科学家的肯定后,全世界
First, all over the world set off a superconducting heat April 1986 US International Business Machines Corporation (IBM) belongs to the Swiss Institute of Zurich, two physicists Miller (KAMul1er) and Bednolz (JGBednorz) using barium The lanthanum copper-oxygen-based ceramics obtained superconductors with a transition temperature of about 30 K. Not only did they break the 14-year superconductivity record for the first time since 1972 when U.S. scientists used niobium-tri-germanium to obtain 23.2 K; and, more importantly, : They obtained superconductors from the unexpected “insulator” of a ceramic material.Their creative work was confirmed by scientists in the United States and Japan in December 1986, and the world