Details

Autor(en) / Beteiligte

• Kumar M V, Santhosh
• Alzahrani, Hassan A H
• G J, Shankaramurthy
• K K, Nagaraja
• Alsaiari, Abdulmohsen O
• B M, Prasanna
• N, Chandamma

Titel

Effects of γ-irradiation on AC electrical and impedance spectroscopy of Ni-Zn nano ferrites

Ist Teil von

• Physica scripta, 2022-09, Vol.97 (9), p.95702

Ort / Verlag

IOP Publishing

Erscheinungsjahr

2022

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Abstract Herein we report the effect of γ -irradiation on the structural and AC electrical properties of Ni-Zn nanoparticles N i 1 − x Z n x F e 2 O 4 0 ≤ x ≤ 1 synthesised via the citrate auto-combustion technique. The x-ray diffraction (XRD) analysis of the samples revealed a decreasing trend of the crystallite size with increasing concentration of Zn 2+ ions, and -irradiation alters the crystallite size for more Ni 2+ ion concentrations. The lattice constant was found to increase with Zn 2+ concentration, with the highest for x = 0.6. However, after irradiation, substantial change occurs. The lattice strain is greater for x = 1 as well as lower for x = 0.4. The observable modifications in the morphology of the samples upon irradiation are identified. The AC-electrical behaviour of the sample was studied before and after γ -irradiation in the frequency range of 1 MHz–23 MHz. Studies show that the dielectric constant increases on irradiation, whereas the dielectric loss and AC conductivity decline after irradiation. The dielectric relaxation changes from non-Debye to Havriliak–Negami relaxation, which is the significance of asymmetric broadness in the relaxation process. The collective AC electrical properties were signifies the radiation absorption response.