据1988年1月22日《日本经济新闻》报道,日本虽然研究成功含钇等稀土类元素的超导材料,但稀土资源缺乏,对超导材料的商品化非常不利。为此,日本科学技术厅金属材料技术研究所研究了一种不含钇类等稀土类元素的超导材料。材料的主要成分是铋、锶、钙、铜的氧化物。这种超导材料价格比较便 According to the January 22, 1988 “Nihon Keizai Shimbun” reported that although Japan has successfully investigated the superconducting materials containing rare earth elements such as yttrium, the lack of rare earth resources is detrimental to the commercialization of superconducting materials. To this end, the Japanese Agency for Science and Technology Metal Materials Technology Research Institute of a non-yttrium rare earth elements such as superconducting materials. The main components of the material is bismuth, strontium, calcium, copper oxide. This superconducting material prices more convenient