Hysteresis analysis of Co-Ti substituted M-type Ba-Sr hexagonal ferrite
Hysteresis analysis of Co-Ti substituted M-type Ba-Sr hexagonal ferrite
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DOI：
10.1016/j.matlet.2009.06.002
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发表时间：
2009-09
影响因子：
3
通讯作者：
C. Singh;S. Narang;I. S. Hudiara;Yang Bai;K. Marina
中科院分区：
文献类型：
--
作者：
C. Singh;S. Narang;I. S. Hudiara;Yang Bai;K. Marina
采用XRD、SEM和VSM研究了合成的Ba0.5Sr0.5CoxTixFe（12−2x）O 19铁氧体的磁性、晶体学性质和晶粒形貌。XRD和SEM证实了M型六方晶体结构。X射线衍射表明，六方晶胞的扩展与Co 2+和Ti 4+离子的替代。微观结构控制密度和晶粒间连接性的增加与替代。Co ~（2+）和Ti ~（4+）离子的优先占位导致各向异性场迅速下降，磁滞回线也显示出同样的取代效应。矫顽力和剩磁可以很容易地通过改变取代来控制，同时保持高饱和磁化强度，使其适用于记录介质。
The magnetic, crystallographic properties and grain morphology of synthesized Ba0.5Sr0.5CoxTixFe(12−2x)O19ferrite have been investigated by XRD, SEM and VSM. XRD and SEM confirm M-type hexagonal crystal structure. X-ray diffraction indicates expansion of hexagonal unit cell with substitution of Co2+and Ti4+ions. The microstructure governs increase in density and intergrain connectivity with substitution. The preferential site occupancy of substituted Co2+and Ti4+ions results in rapid decline of anisotropy field, hysteresis loops also revealed same effect of substitution. Coercivity and remanence magnetization can be easily controlled by varying substitution while maintaining high saturation magnetization, making it useful for recording media.