日本物质材料研究机构和早稻田大学联合研究小组近日发现,添加硼的金刚石薄膜在极低温状态下可进入超导状态,这一新的超导材料有望用于开发新型超导薄膜和超导元件。据报道,薄膜采用化学气相生成法制成,先用微波照射气体原料使之变为电离气体,电离气体在硅基片上层叠时,再添加2%的硼。实验结果证明,样品在绝对温度8.7K进 A joint research group of Japan Materials Research Institute and Waseda University recently found that boron-doped diamond films can enter the superconducting state at very low temperatures, and the new superconducting materials are expected to be used to develop new superconducting thin films and superconducting devices. It has been reported that the film is made by a chemical vapor deposition method. First, the raw material of the gas is irradiated with microwaves to be ionized gas. When the ionized gas is layered on the silicon substrate, 2% of boron is added. The experimental results show that the sample at an absolute temperature of 8.7K into