TY - JOUR
T1 - Effects of γ-irradiation on AC electrical and impedance spectroscopy of Ni-Zn nano ferrites
AU - Santhosh Kumar, M. V.
AU - Alzahrani, Hassan A.H.
AU - Shankaramurthy, G. J.
AU - Nagaraja, K. K.
AU - Alsaiari, Abdulmohsen O.
AU - Prasanna, B. M.
AU - Chandamma, N.
N1 - Funding Information:
This Research work was funded by institutional Fund Projects under grant number (IFPRC-149-135-2020). Therefore, authors greatfully acknowledge Technical and Financial Support from the Ministry of Education and King Abdulaziz University, Jeddah, Saudi Arabia.
Publisher Copyright:
© 2022 IOP Publishing Ltd.
PY - 2022/9/1
Y1 - 2022/9/1
N2 - 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 Zn2+ ions, and -irradiation alters the crystallite size for more Ni2+ ion concentrations. The lattice constant was found to increase with Zn2+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.
AB - 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 Zn2+ ions, and -irradiation alters the crystallite size for more Ni2+ ion concentrations. The lattice constant was found to increase with Zn2+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.
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U2 - 10.1088/1402-4896/ac850d
DO - 10.1088/1402-4896/ac850d
M3 - Article
AN - SCOPUS:85136110154
SN - 0031-8949
VL - 97
JO - Physica Scripta
JF - Physica Scripta
IS - 9
M1 - 095702
ER -