Effects of Mg2+ ion substitution on the structural and electric studies of spinel structure of Co1−xMgxFe2O4

Simple One-Step Leaf Extract-Assisted Preparation of α-Fe2O3 Nanoparticles, Physicochemical Properties, and Its Sunlight-Driven Photocatalytic Activity on Methylene Blue Dye Degradation

“…The increasing trend of frequency and temperature would decrease the real part of the impedance value owing to a space charge effect, and the values are saturated at high frequency as shown in the figure which is given in the supplementary information and in Figures 17(a), 17(c), and 17(e) where there is an increase in the conductivity with respect to frequency. At high frequency, the part of the impedance value has merged due to the release of the space charge because of the reduction of the barrier properties or the accumulation of charges at the electrode surface along with the rise of the temperature [76,77]. A decreasing trend of the Z′ value at high frequency is almost low in all the samples.…”

Moringa oleifera Leaf Extract-Mediated Green Synthesis of Nanostructured Alkaline Earth Oxide (MgO) and Its Physicochemical Properties

“…e increasing trend of frequency and temperature decreases the real part of impedance value owing to space charge effect and the values saturated at high frequency as shown in supplementary information Figures S1a, S1c, and S1e, which has meant an increase of conductivity with frequency. At high frequency, the part of impedance value has merged due to the release of space charge and owing to the reduction of barrier properties or accumulation of charges at the electrode surface along with the rise of temperature [75,94]. e decreasing trend of Z′ value at high frequency is almost low in all the samples.…”

“…Oxygen vacancies in metal oxides and relaxation processes of materials are being the reason for the frequency-dependent imaginary part of impedance shifted to a higher frequency with an increase in temperature. When high temperatures are met, all the values are saturated and merged at higher frequency [75,94]. e imaginary part of impedance is shown in supplementary information Figures S1b, S1d, and S1f.…”

“…e graph was drawn between the real part of impedance (Z′) and the imaginary part of impedance (Z″) as shown in supplementary information Figures S2a, S2b, and S2c. From Figure S2, it can be seen that slightly semicircle with distinct radii appears at the low frequency due to grain boundaries [75,93,94]. Semicircle decreases with increasing temperature due to the negative temperature coefficient of materials which are promising materials for thermistor applications.…”

“…From the graph, we could observe that semicircles have been formed because the grain and grain boundaries might be the reason for the conduction of the materials. At the higher frequencies and temperature, the semicircle has been disappeared on account of hopping of ions [75,[92][93][94].…”