The influence of chemical composition on initial permeability frequency spectra of cobalt ferrites

被引：0

作者：

Vilceanu, V. ^{[4
]}

Feder, M. ^{[3
]}

Boutiuc, L. ^{[1
,2
]}

Dumitru, I. ^{[1
,2
]}

Caltun, O. F. ^{[1
,2
]}

机构：

[1] Alexandru Ioan Cuza Univ, Fac Phys, Iasi 700506, Romania

[2] Alexandru Ioan Cuza Univ, Carpath Ctr, Iasi 700506, Romania

[3] Natl Inst Mat Phys, Bucharest, Romania

[4] SC Afero Exim Srl, Bucharest, Romania

来源：

OPTOELECTRONICS AND ADVANCED MATERIALS-RAPID COMMUNICATIONS | 2010年 / 4卷 / 06期

关键词：

Cobalt ferrites; Cation distribution magnetic properties; Initial permeability; TEMPERATURE;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In order to study the influence of the cations substitution on permeability of cobalt ferrites four series of samples with different chemical composition were prepared by conventional ceramic method. The calcined powders and sintered samples were characterized by X-ray diffraction and vibrating samples magnetometer. The microstructure of the samples was analyzed by surface electron microscopy. The initial permeability spectra at room temperature were plotted using the torus standard method. Chemical composition and the microstructure influence the magnetic properties and the initial permeability spectra of the cobalt ferrites samples. Small amount of manganese ions decreases the Curie temperature, increase the initial permeability and saturation magnetization and decreases the coercive magnetic field, thus improving the performances of cobalt ferrites for magnetostrictive sensors applications.

引用

页码：808 / 811

页数：4

共 17 条

[1] Magnetization and Mossbauer study of cobalt ferrite particles from nanophase cobalt iron carbonate [J].