Initial permeability studies on high density Cu-Mg-Zn ferrites

被引:41
作者
Bhosale, DN
Choudhari, ND
Sawant, SR
Bakare, PP
机构
[1] SHIVAJI UNIV,DEPT PHYS,KOLHAPUR 416004,MAHARASHTRA,INDIA
[2] NATL CHEM LAB,DIV PHYS CHEM,SIL,PUNE 411008,MAHARASHTRA,INDIA
关键词
initial permeability; ferrites; anisotropy constant;
D O I
10.1016/S0304-8853(97)00178-9
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
We have synthesized Cu-Mg-Zn ferrites by using coprecipitation technique using oxalate precursors. The lattice parameter shows a gradually decreasing trend with increasing Mg2+ content, which is attributed to ionic sizes of Mg2+ and Cu2+ ions. The density of the samples increases with increasing Mg2+ content, which is attributed to smaller ionic size of Mg2+ ions. The Curie temperature does not show appreciable increasing or decreasing trend. The variation in initial permeability (mu(i)) in our compositions is mainly affected by variations of magnetization (M-s) and average particle diameter (D). Also the samples exhibit thermal hysteresis behaviour. The mu(i) decreases with increasing Mg2+ content. This is attributed to a lower value of the anisotropy constant (K-1) for MgFe2O4 than that for CuFe2O4.
引用
收藏
页码:51 / 58
页数:8
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