具有大单轴各向异性的相互作用亚10nm纳米磁体的记忆和老化效应
Memory and aging effects in interacting sub-10nm nanomagnets with large uniaxial anisotropy
摘要:
使用非平衡蒙特卡罗方法适合于纳米磁学,我们调查的相互作用的亚10纳米晶粒的纳米磁体与大的单轴各向异性的代表性系统。在这样的系统中发现各种磁化记忆和老化效应。我们解释这些动力学效应使用的相互作用的纳米磁体由于其大的各向异性能量的分布弛豫时间。
英文摘要:
Using a nonequilibrium Monte Carlo method suitable to nanomagnetism, we investigate representative systems of interacting sub-10nm grained nanomagnets with large uniaxial anisotropy. Various magnetization memory and aging effects are found in such systems. We explain these dynamical effects using the distributed relaxation times of the interacting nanomagnets due to their large anisotropy energies.
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