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最近又研制成功一类新型的氧化铜陶瓷,在液氮温度下(77K和高于77K),该陶瓷的导电电阻为零。与以前研制的高温超导体不同,这种氧化铜陶瓷含有稀土元素。这种新材料还含有一些价格比
Recently, a new type of copper oxide ceramic has been successfully developed. The conductivity of this ceramic is zero at liquid nitrogen temperatures (77K and above 77K). Unlike previously developed high temperature superconductors, this copper oxide ceramic contains rare earth elements. This new material also contains some price ratio