【摘要】 利用Monte Carlo模拟方法研究了样品的尺寸对外径为200 nm的铁纳米环磁特性的影响.分别从不同尺寸纳米环的磁化反转机制、纳米环的磁滞回线以及矫顽力的特点等方面来研究.结果表明:铁纳米环的尺寸对其"Vortex"态的形成及稳定性有较大的影响,表明了其明显的尺寸效应.更多还原

【Abstract】 For the individual Fe nanorings with the outer diameter of 200 nm,the effect of size upon rings’ magnetic properties is simulated by Monte Carlo method.The main contents of the research can be summarized as follows: the magnetization reversal process,the hysteresis loops,the coercivity and so on.The simulated results indicate that,there exist evident size effects on the stability of vortex-type state and magnetization processes of the nanorings.更多还原