Vinamax：磁性纳米粒子的宏观自旋模拟工具
Vinamax: a macrospin simulation tool for magnetic nanoparticles
摘要：
我们提出了Vinamax，纳米粒子的模拟工具，旨在模拟非常大的时间尺度上的磁化动力学。为此，每个单独的纳米粒子近似于一个宏自旋。Vinamax采用偶极近似方法数值求解Landau-Lifshitz方程，而温度效应可以通过两种随机方法来考虑。它描述了在有限温度下，在空间和时间依赖的外部施加的磁场的退磁场和各向异性场的磁性纳米粒子的影响。Vinamax可用于生物医学研究，其中纳米颗粒成像技术正在开发中。
英文摘要：
We present Vinamax, a simulation tool for nanoparticles that aims at simulating magnetization dynamics on very large timescales. To this end, each in dividual nanoparticle is approximated by a macrospin. Vinamax numerically solves the Landau-Lifshitz equation by adopting a dipole approximation method, while temperature effects can be taken into account with two stochastic methods. It describes the influence of demagnetizing and anisotropy fields on magnetic nanoparticles at finite temperatures in a space and time-dependent externally applied field. Vinamax can be used in biomedical research where nanoparticle imaging techniques are under developement.
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