Effects of Co Substitution on the Microstructural, Infrared, and Electrical Properties of Mg0.6-xCoxZn0.4Fe2O4 Ferrites

被引：21

作者：

AlArfaj, Esam ^{[1
]}

Hcini, Sobhi ^{[2
,3
]}

Mallah, Abdulrahman ^{[4
]}

Dhaou, Mohamed Houcine ^{[1
,5
]}

Bouazizi, Mohamed Lamjed ^{[6
]}

机构：

[1] Qassim Univ, Dept Phys, Coll Sci, Buraydah Almolaydah, Buraydah, Saudi Arabia

[2] Univ Kairouan, Fac Sci & Technol Sidi Bouzid, Res Unit Valorizat & Optimizat Exploitat Resource, Univ Campus Agr City, Sidi Bouzid 9100, Tunisia

[3] Buraydah Tech Coll Al Asyah, Al Asyah King Abdulaziz Rd,PB 304, Al Asyah 51971, Saudi Arabia

[4] Qassim Univ, Coll Sci, Dept Chem, POB 6644, Buraydah Almolaydah 51452, Buraydah, Saudi Arabia

[5] Univ Monastir, Natl Engn Sch Monastir, Lab Studies Thermal Syst & Energy, Ibn Eljazzar Rd, Monastir 5019, Tunisia

[6] Prince Sattam Bin Abdulaziz Univ, Coll Engn, Al Kharj 11942, Saudi Arabia

来源：

JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM | 2018年 / 31卷 / 12期

关键词：

Ferrites; Sol-gel method; Microstructural properties; Infrared properties; Electrical properties; SOL-GEL METHOD; MAGNETIC-PROPERTIES; DIELECTRIC-PROPERTIES; SPINEL FERRITE; MG FERRITES; ZINC FERRITE; IMPEDANCE; MODULUS; CERAMICS; NI;

D O I：

10.1007/s10948-018-4694-8

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Spinel ferrites having Mg0.6 - xCoxZn0.4Fe2O4 (0 x 0.6) compositions were prepared using the sol-gel method. XRD patterns show that samples have the cubic phase of the spinel ferrite with the Fd3 space group. The obtained values of the lattice constant and porosity increase with increasing cobalt concentration. FTIR spectra show only the tetrahedral stretching peaks that are shifting towards higher frequencies with increasing Co content. The substitution of Mg by Co leads to the decrease of conductivity of the samples. The behaviors of the real part of permittivity and loss tangent have been investigated using Maxwell theory. Electrical modulus and impedance results show the presence of the electrical relaxation phenomenon for the samples with non-Debye type. The Nyquist representations have been analyzed using a proposed electrical circuit, and the results show that the resistances of the prepared samples resulted mostly from the grain boundary effect.

引用

页码：4107 / 4116

页数：10

共 46 条

[1] Structural and complex impedance spectroscopic studies of Mg- substituted CoFe2O4 [J].