CAJ | 학술논문

磁铁矿是分布广泛且非常重要的亚铁磁材料，也广泛分布在生物体中。生物体中的磁铁矿具有完美的晶体结构，大多为超顺磁颗粒或单畴颗粒，且大多呈链状分布，具有明显的磁各向异性。生物体中存在“磁接收器”，生物磁铁矿是“磁接收器”的生物物理基础。本文中，从超顺磁磁铁矿颗粒和单畴磁铁矿颗粒的物理特性出发，主要是从它们的磁各向异性特性的基础上描述了生物磁铁矿和“磁接收器”的工作机制，即在某些条件下，在外界地磁场强度量级的磁场作用下，超顺磁颗粒或单畴颗粒可以诱导产生足够强的磁场，使邻近的晶体可以相互吸引或排斥，这些粒子间的相互作用可以改变晶体颗粒束所在的外围机体形状，而神经系统可以探测到单独的粒子束或一列粒子束的扩张或收缩，因此生物体就可以探测到磁场的方向以及强度等磁场参量。
자철광시분포엄범차비상중요적아철자재료，야엄범분포재생물체중。생물체중적자철광구유완미적정체결구，대다위초순자과립혹단주과립，차대다정련상분포，구유명현적자각향이성。생물체중존재“자접수기”，생물자철광시“자접수기”적생물물리기출。본문중，종초순자자철광과립화단주자철광과립적물리특성출발，주요시종타문적자각향이성특성적기출상묘술료생물자철광화“자접수기”적공작궤제，즉재모사조건하，재외계지자장강도량급적자장작용하，초순자과립혹단주과립가이유도산생족구강적자장，사린근적정체가이상호흡인혹배척，저사입자간적상호작용가이개변정체과립속소재적외위궤체형상，이신경계통가이탐측도단독적입자속혹일렬입자속적확장혹수축，인차생물체취가이탐측도자장적방향이급강도등자장삼량。
Magnetite distributes abroad and is a most important ferrous material in nature, and also distributes a-broad in living bodies.Biomagnetites have pure crystal structure and most are superparamagnetic particles and single domain particles with obvious magnetic anisotropy.Magnetoreceptor exists in these living bodies with bio-magnetite being the biophysics base.In this paper, from the point of view of physical characteristics of super-paramagnetic particles and single domain particles, mainly from the point of view of magnetic anisotropy of them, the working mechanism of biomagnetite and magnetoreceptor are discussed.That is in some condition, by the effect of magnetic field sizable as geomagnetic, superparamagnetic particles and single domain particles can be induced to produce magnetic field enough to let crystals adjacent repel or attract, the effect of these particles can change the shape of the outer organic matter of these particles, so nerves can detect the outspread or shrinkage of these particles and then the living bodies can detect the direction and intension of outer magnetic field.