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Bi-modal improvement of the physico-chemical characteristics of PEG and MFe2O4 subnanoferrite

“…These bands were observed in all PEG/MFe 2 O 4 as well as in blank PEG, but different intensities of these bands were obtained. The band around 550 cm −1 corresponds to the stretching vibration due to the interactions produced between the oxygen and the cation occupying the tetrahedral sites for PEG/MFe 2 O 4 nanocomposites [23]. The pure PEG sample gives clear bands at around 3400-3450 cm −1 ( O-H ) and 1000-1030 cm −1 ( C-O ) which indicates the presence of -OH and C-O group vibration modes.…”

The role of Dy3+ ions and sintering temperature on the magnetic characterization of LiCo-Ferrite

“…The magnetic susceptibility is an important tool for the magnetic characterization of these ferrite materials and has been reported by many authors [2][3][4][5][6][7][8]. A comparison between the electric and magnetic susceptibility of Li 0:5Àx=2 Cd x Fe 2:5Àx=2 O 4 ; 0:2pxp0:8 has been studied by Ahmed et al [2].…”

“…A comparison between the electric and magnetic susceptibility of Li 0:5Àx=2 Cd x Fe 2:5Àx=2 O 4 ; 0:2pxp0:8 has been studied by Ahmed et al [2].…”

Fabrication, characterization and magnetic behaviour of alumina-doped zinc ferrite nano-particles

“…However, the existence of a week shoulder, v * 1 , around the v 1 band in the range 629-620 cm −1 indicating the presence of zinc ion. In other words, the bands v * 1 and v 3 correspond to divalent ion as well as oxygen and thermal vibration, respectively [30]. In addition, the threshold frequency, vth, for electronic transition has a value in the range of 795-810 cm −1 for different samples.…”