【摘要】 分析了磁铁矿粒子的单畴临界尺寸,表明生物体内的纳米磁铁矿粒子具有单畴特性.分别讨论了石鳖、趋磁细菌及蜜蜂体内纳米磁铁矿粒子的磁畴结构及磁矩分布,探讨了与地磁场相互作用下它们的生物导航功能机制.更多还原

【Abstract】 In this paper the critical size of single domain of nano-magnetic particles is analyze-d,and the result shows that these nano-magnetic particles in living bodies are in the range of singl-e domain.The structures of domain and the magnetic fields of nano-magnetic particles in chiton,magnetotactic bacteria and honeybee are discussed.Also,the principle of navigation due to the act-ion of these particles with earth magnetic field is probed.更多还原