纳米超导材料的室温铁磁性
Room-temperature ferromagnetism in nanoparticles of superconducting materials
摘要：
超导YBa_2Cu_3O_（7-δ）（YBCO）（Tc = 91 K）的纳米颗粒在室温下表现出铁磁性，而高温（940 ℃）加热得到的大块YBCO的磁化曲线为线性。在整个超导转变温度范围内，磁化曲线从软铁磁体的磁化曲线变为超导体的磁化曲线。此外，我们的实验表明，不仅金属氧化物的纳米颗粒，而且金属氮化物，如NbN（Tc = 6 - 12 K）和δ-MoN（Tc ~ 6 K）显示室温铁磁性。
英文摘要：
Nanoparticles of superconducting YBa2Cu3O7-delta (YBCO) (Tc = 91 K) exhibit ferromagnetism at room temperature while the bulk YBCO, obtained by heating the nanoparticles at high temperature (940 degree C), shows a linear magnetization curve. Across the superconducting transition temperature, the magnetization curve changes from that of a soft ferromagnet to a superconductor. Furthermore, our experiments reveal that not only nanoparticles of metal oxides but also metal nitrides such as NbN (Tc = 6 - 12 K) and delta-MoN (Tc ~ 6 K) exhibit room-temperature ferromagnetism.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
