在无毒性转变温度超过100 K的超导材料研究方面取得重要进展之二

超导体的一个重要性质是无损耗地承载很大电流，因此利用超导磁体能够产生超强磁场。这个性质可以应用在国防，医疗，受控核聚变，高能加速器和新一代磁悬浮轨道交通等方面。在超导体的磁场和温度相图上，有一个标识无损耗传输电流的边界线叫不可逆线，只有在不可逆线以下的温度和磁场，超导体才可以承载一定的超导电流。通常不可逆磁场越高，该超导体在强磁场下承载无损耗电流的能力就越强，并有一个更好的应用预期。铜氧化合物超导体家族中就有很多超导体的临界温度超过液氮温度，但这些材料很多含有毒性元素铊和汞，而且液氮温区的不可逆磁场并不高。而无毒性的铜氧化合物超导体(Cu,C)Ba2Ca3Cu4O11+δ的临界温度约为116 K，它在液氮温度及以上的温区具有迄今为止最高的不可逆磁场，因此可能带来更好的应用。本数据集包含了在项目执行期内，针对(Cu,C)Ba2Ca3Cu4O11+δ无毒铜氧化合物超导体单晶生长以及临界参数各向异性的研究过程中晶体结构以及磁场下电阻率表征的原始数据。

One important property of superconductors is their ability to carry large currents without energy loss, which enables the generation of ultra-strong magnetic fields via superconducting magnets. This property enables applications in national defense, medical care, controlled nuclear fusion, high-energy accelerators, and next-generation maglev rail transit, among other fields. On the magnetic field-temperature phase diagram of superconductors, there is a boundary line that marks the condition for lossless current transmission, known as the irreversibility line. Only when the temperature and magnetic field are below this irreversibility line can a superconductor carry a certain amount of superconducting current. Generally, the higher the irreversibility magnetic field, the stronger the superconductor's ability to carry lossless currents under strong magnetic fields, and the better its application prospects. Many cuprate superconductors have critical temperatures exceeding the liquid nitrogen temperature, but most of these materials contain toxic elements such as thallium and mercury, and their irreversibility magnetic fields in the liquid nitrogen temperature range are not high. In contrast, the non-toxic cuprate superconductor (Cu,C)Ba₂Ca₃Cu₄O₁₁+δ has a critical temperature of approximately 116 K, and it exhibits the highest irreversibility magnetic field reported to date in the temperature range at and above liquid nitrogen temperature, thus promising better application prospects. This dataset contains the raw data collected during the project execution period, originating from research on single-crystal growth of the non-toxic cuprate superconductor (Cu,C)Ba₂Ca₃Cu₄O₁₁+δ and the anisotropy of its critical parameters, including crystal structure characterization and resistivity measurements under magnetic fields.