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据日本《电视学会志》1992年第3期报道,日本科学技术厅无机材料研究所首先在世界上采用超高分辨率、超高压电子显微镜成功地直接观察高温氧化物超导体中的氧原子。试料在900℃高压氧气氛中烧结,采用过量的氧(1个钇原子:7个氧原子)的钇-钡-铜-氧的高温超导
According to Japan’s “TV Institute” No. 3 of 1992 reported that Japan Institute of Science and Technology Institute of inorganic materials first in the world using ultra-high resolution, high pressure electron microscopy direct observation of high temperature oxide superconductor oxygen atoms. The sample was sintered in a high-pressure oxygen atmosphere at 900 ° C using high-temperature superconductivity of yttrium-barium-copper-oxygen in excess of oxygen (1 atom of yttrium: 7 atoms of oxygen)