Effect of cobalt substitution on structural, electrical and magnetic properties of NiFe2O4

被引：21

作者：

Babu, Kannipamula Vijaya ^{[1
]}

Chandra, Matangi Ravi ^{[1
]}

Kumar, Gondu Venkata Santosh ^{[1
]}

Jagadeesh, Kantamsetti ^{[2
]}

机构：

[1] Andhra Univ, Adv Analyt Lab, Visakhapatnam 530003, Andhra Pradesh, India

[2] Sri Vasavi Engn Coll, Tadepalligudem, Andhra Pradesh, India

来源：

PROCESSING AND APPLICATION OF CERAMICS | 2017年 / 11卷 / 01期

关键词：

nickel ferrite; structural characterization; electrical properties; FERRITE NANOPARTICLES; NICKEL; CONDUCTIVITY;

D O I：

10.2298/PAC1701060V

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Nickel ferrite and cobalt substituted nickel ferrite were synthesized by sol-gel method using citric acid as chelating reagent. X-ray diffraction revealed the formation of nanocrystalline particles having spinel structure with space group Fd3m. FTIR spectra showed fundamental absorption bands in the range 400-1300 cm(-1), related to iron ions on both octahedral and tetrahedral sites which are typical for ferrite structure. SEM analyses confirmed that the particles are agglomerated with an average size of about 1.5 mu m. The ferrite powders were pressed at 5 MPa and sintered at 1200 degrees C for 5 h. Conductivities, impedance analyses and dielectric properties of NiFe2O4 and Ni0.7Co0.3Fe2O4 ceramics were investigated over the frequency range of 20 Hz to 1 MHz at room temperature. The obtained experimental results are in good agreement with the reported values.

引用

页码：60 / 66

页数：7

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