【摘要】 颗粒磁矩反转场的大小和反转速度是衡量磁记录写入效率的主要指标.利用LL方程描述在微波场下颗粒磁矩的动力学行为,考虑了颗粒磁矩各向异性场之间存在一定夹角,计算了颗粒磁矩之间相互作用对反转场大小以及反转速度的影响,对于单个颗粒磁矩提出了能够有效提高磁矩反转速度,同时降低磁矩反转场的方法.更多还原

【Abstract】 The minimum switching field threshold and switching speed are key parameters for the magnetic recording in writing.This paper presents the dynamic precession of the moments of the grains based on LL equation,and the impact of the interaction between the grains on the minimum switching field threshold and the speed of the switching process in the microwave field is investigated.As an isolate grain,microwave assisted switching could enhance minimum switching field threshold and switching speed.更多还原