100 Tera-bit/inch2信息存储介质磁性石墨烯带的设计
Design of Magnetic Graphene-ribbon for 100 Tera-bit/inch2 Information Storage Media
摘要：
磁性石墨烯带是实现未来超高密度100兆比特/英寸2级数据存储介质的候选者。基于密度泛函理论对多自旋态进行了分析。一个典型的模型是超级电池[C80 H7]，其在一侧锯齿形边缘上具有裸露的（自由基）碳，而在另一侧上具有单氢化。通过优化原子构型，自洽计算表明，最高自旋态的总能量比低自旋态的总能量更稳定，这是由于碳原子之间的交换耦合作用。该分析表明了利用这种化学边缘改性的石墨烯带设计磁性数据轨道的能力。为了提高面磁化强度，分析了双层和四层石墨烯带模型。详细的计算结果表明，自旋最高的态也是最稳定的态。增加层数是实现和增强强磁性的有效途径。
英文摘要：
Magnetic graphene-ribbon is a candidate for realizing future ultra high density 100 tera bit/inch2 class data storage media. Multiple spin state analysis was done based on the density function theory. A typical model was a super cell [C80H7] which having bare (radical) carbons on one side zigzag edge, whereas mono hydrogenated on another side. Optimizing atomic configuration, self consistent calculation demonstrated that a total energy of the highest spin state is more stable than that of lower one, which came from exchange coupling between carbons. This analysis suggested a capability of designing magnetic data track utilizing such chemically edge modified graphene ribbon. In order to increase areal magnetization density, bilayer and quadri-layer graphene-ribbon model were analyzed. Detailed calculation resulted that also the highest spin state is the most stable one. Multiplying the layer numbers is effective way to realize and enhance strong magnetism.
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。
