稀土元素一词在一般人中的普及是几年前的事。当然,在普及之前,专家们已经常使用它了。最近一两年前,在日本掀起超导热时,稀土元素才为一般人所认识。最近,以田中昭二教授为中心的学术界掀起了这一热潮,所以,世界上也兴起了超导狂热。作为超导原材料的稀土金属,突然成了深入研究的课题。它不仅直接为超导应用,而且在相关的技术及边沿技术方面,也正进 The popularity of the term rare earth element in most people is something a few years ago. Of course, experts have used it often before it gets popular. In the last year or two ago, rare earth elements were recognized by most people when Japan set off superconductivity. Recently, the academic circle centered around Professor Takamasa Tanaka set off this craze, so the superconducting fanaticism also emerged in the world. As a superconducting raw material of rare earth metals, suddenly became a subject of further study. It is not only direct for superconducting applications, but also in the related technology and edge technology