Ferrimagnetic to paramagnetic transition and dielectric relaxation in Ni1-xZnxFe2O4 ferrites
AUTOR(ES)
Jadhav, S. S.; Jadhav, S. P.; Ramshetti, R. S.; Kamble, S. R.; Patange, S. M.
FONTE
Cerâmica
DATA DE PUBLICAÇÃO
2021-06
RESUMO
Abstract The spinel ferrite system Ni1-xZnxFe2O4 (x=0-0.7, Δx=0.1) was prepared by wet chemical co-precipitation method using sulfates of respective metal ions. The electrical resistivity and dielectric properties of the prepared samples have been studied as a function of temperature, frequency, and Zn content (x). The DC resistivity (ϱ) was measured in the temperature range of 300 to 800 K. The curves so plotted show two phases viz. ferrimagnetic and paramagnetic, wherein the transformation from former to later phase took place at the Curie temperature, TC. The values of TC were found to decrease with the increase in x. The values of activation energy (ΔE<0.2 eV) depicted the possibility of the hopping mechanism governing the conduction within the ferrites. The ferrite samples exhibited semiconducting behavior, where the electrical resistivity (ρ) decreased with the increasing temperature. The dielectric constant (ε’) and dielectric loss (ε”) were studied as a function of composition, temperature, and frequency.
Documentos Relacionados
- Nanoparticles of Ni1-x Znx Fe2 O4 used as Microwave Absorbers in the X-band
- Síntesis y estudio de propiedades estructurales y magnéticas de ferritas Mg1-xZnxFe2O4 (x= 0-0,9)
- Influência do teor de Zn2+ nas características morfológicas e magnéticas de ferritas Mn1-xZnxFe2O4 sintetizados em grande escala por reação de combustão
- Structural and Magnetic Properties of Hydrothermal Spinel Ni0.4Zn0.6Fe2O4 Ferrites
- Influence of the sintering temperature on the magnetic and electric properties of NiFe2O4 ferrites