Microstructure, XPS and magnetic analysis of Al-doped nickel–manganese–cobalt ferrite

Correlation between Magnetic and Dielectric Response of CoFe2O4:Li1+/Zn2+ Nanopowders Having Improved Structural and Morphological Properties

“…Figure 3 b presents two main peaks, Zn 2p 3/2 and 2p 1/2, with binding energies of 1020 eV and 1043 eV, respectively, confirming that the most stable oxidation state of Zn is +2, as reported in the literature [ 38 , 39 , 40 ]. The binding energy of Zn 2p 3/2 indicates a peak around 1021 eV and 1023 eV in tetrahedral (T h ) and octahedral (O h ) sites, respectively [ 41 ].…”

“…Figure 3 a shows the spectrogram of CoLi 0.3 Zn 0.3 Fe 1.4 O 4 ferrite. A closer look at the XPS spectrum Figure 3 b–f of individual element shows that 2p energy level of individual element is split into two levels that is 2p 3/2 and 2p 1/2, due to spin-orbit interaction [ 38 ]. Another use of XPS is the detection of two sub-lattice positions (the T h and O h sites) in a ferrite sub-lattice.…”

“…Moreover, it is revealed that the satellite peak at about 717.7 eV represents the occurrence of Fe 2+ [ 42 ] at the octahedral site. The two weak peaks at 717 and 733.6 eV, referred to as satellite peaks, are formed as a result of electronic transitions occurring between Fe-ions during ferrite synthesis [ 38 , 43 ].…”

Absorption-Dominant mmWave EMI Shielding Films with Ultralow Reflection using Ferromagnetic Resonance Frequency Tunable M-Type Ferrites

“…5 d, f shows Co 2 p and Ti 2 p spectra of Co-Ti doped SrM, and Al 2 p spectra of Al doped SrM, respectively. The deconvolved peaks in all spectra are consistent with previously reported data [ 60 , 65 , 66 ]. The presence of trivalent Co 3+ ions in Co-Ti doped SrM is attributed to the charge transfer between Fe 3+ and Co 2+ ions (Fe 3+ + Co 2+ ↔ Fe 2+ + Co 3+ ).…”

Impact of copper immobilization on dramatic conversion of inactive NiAlFeO4 to an active catalyst for reduction of nitrophenols and a visible light photocatalyst for effective removal of organic contaminants from waste water

“…The major binding energy peak (529.4 eV) is related to lattice oxygen, but the peak at 530.01 eV in the synthesised sample may be due to surface-adsorbed oxygen. 51 As predicted, an extra peak of Cu 2p appeared in all the nanocomposites. In the high-resolution XPS spectra of Cu 2p (see Fig.…”