链球状纯铁磁粉的磁粘滞性  

MAGNETIC VISCOSITY OF CHAIN-SPHERICAL Fe ULTRA-FINE PARTICLES

作　　者：高晓云[1] 李谨[1] 侯登录[1] 杨福明 钟夏平[2] 罗河烈[2] 

机构地区：[1]北京化工学院,北京100029 [2]中国科学院物理研究所,北京100080

出　　处：《物理学报》1993年第11期1851-1855,共5页Acta Physica Sinica

摘　　要：报道了对激光法制备的链球状纯铁超细磁粉磁粘滞性研究结果。结果表明,n个链球段构成反磁化单元,并等效于一个单轴单畴粒子。不同条件下制备的粉体激活体积的变化趋势与磁性针状氧化物相似。This paper reports the study on the magnetic vicosity for chain-spherical Fe UFP prepared by laser pyrolysis. Fluctuation field,anisotropy and active volume of the particles were measured and calculated. The results show that the reverse magnetizing unit is made up of n chain spheres,and equivalent to a single-domain with uniaxial particle. Variation tendency of active volume of the particles is similiar to the acicular γ-type ferric oxide particles.

关 键 词：铁粉 铁磁材料 链球状 磁后效 

分 类 号：O482.54[一般工业技术—材料科学与工程]