Simulated transition path between the high- and the low-moment states of a circular ring made of 20 equidimensional magnetosomes

Assumptions: 50 nm spherical magnetosomes with a saturation magnetization of 480 kA/m (magnetite) separated by 5 nm gaps.<br>Initial state: two equal, tangentially magnetized domains.<br>Final state: zero-moment flux closure.<br>CSV data structure with magnetosomes numbered from 1 to 20. Magnetic moment directions are given in spherical coordinates with respect to the ring circumference. Column 1: total energy normalized by kT, with T = 293 K. Columns 2-21: polar angles of the magnetic moments of individual magnetosomes (theta01, ..., theta20). Columns 22-41: azimuthal angles of the magnetic moments of individual magnetosomes (phi01, ..., phi20).假设条件：尺寸为50 nm的球形磁小体（spherical magnetosomes），饱和磁化强度为480 kA/m，材质为磁铁矿（magnetite），磁小体间间隙为5 nm。 初始状态：包含两个大小均等的切向磁化畴。 最终状态：实现零磁矩通量闭合结构。 数据集采用逗号分隔值（CSV）格式，磁小体编号为1至20。磁矩方向采用相对于环周的球坐标系给出。各列具体信息如下：第1列为以kT归一化的总能量，其中T=293 K；第2至21列为各单个磁小体磁矩的极角（θ₀₁, …, θ₂₀）；第22至41列为各单个磁小体磁矩的方位角（φ₀₁, …, φ₂₀）。