Gong Chunhong, Meng Hongjie, Zhao Xiaowei, Zhang Xuefeng, Yu Laigui, Zhang Jingwei, Zhang Zhijun
College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, P. R.China.
Engineering Research Center for Nanomaterials, Henan University, Kaifeng 475004, P. R.China.
Sci Rep. 2016 Jan 7;6:18927. doi: 10.1038/srep18927.
Recently, the defect-induced static magnetic behaviours of nanomaterials have been a cutting-edge issue in diluted magnetic semiconductor materials. However, the dynamic magnetic properties of nanomaterials are commonly ignored if their bulk counterparts are non-magnetic. In the present research, titanium nitride-carbon (TiN/C) nanocomposites were found to exhibit both static and dynamic magnetic properties that vary in the opposite trend. Moreover, novel unconventional electromagnetic resonance behaviour was demonstrated in TiN/C systems, and their permeability and permittivity show similar trend. This is challenging for the traditional understanding of electromagnetism and makes it possible to achieve an appropriate balance between the permeability and permittivity simultaneously in a simple system. Hopefully, the results could provide some valuable clues to revealing the magnetism and electromagnetism of nanostructures.
最近，纳米材料的缺陷诱导静态磁行为一直是稀磁半导体材料中的前沿问题。然而，如果纳米材料的块体对应物是非磁性的，其动态磁特性通常会被忽略。在本研究中，发现氮化钛-碳（TiN/C）纳米复合材料同时表现出静态和动态磁特性，且二者呈相反趋势变化。此外，在TiN/C系统中展示了新型非常规电磁共振行为，其磁导率和介电常数呈现相似趋势。这对传统电磁学理解提出了挑战，并使得在一个简单系统中同时实现磁导率和介电常数的适当平衡成为可能。有望这些结果能为揭示纳米结构的磁性和电磁学提供一些有价值的线索。
