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日本东洋金属公司最近用非稀土类元素试制一种在绝对温度90度(零下183℃)时电阻为零的超导陶瓷。据报道,这种超导陶瓷是将氧化铝、氧化亚铜及数种金属氧化物,用4∶4∶2的比例混合成糊膏
Japan’s Toyo Metal recently experimented with non-rare earth elements of a zero-resistance superconducting ceramic at an absolute temperature of 90 degrees (minus 183 ° C). It is reported that this superconducting ceramic is alumina, cuprous oxide and several metal oxides, with a ratio of 4: 4: 2 mixed paste