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Synthesis, microstructure, dielectric and magnetic properties of Cu substituted Ni–Li ferrites

“…It is observed that, there are two main frequency bands, namely, high frequency band n 1 (575-580 cm À 1 ) and low frequency band n 2 (around 400 cm À 1 ). These two observed bands (n 1 and n 2 ) correspond to the intrinsic vibrations of tetra- from 420 to 450 cm À 1 are due to the presence of different metal ions at the octahedral site [14][15][16]. Fig.…”

Glycine-assisted fabrication of nanocrystalline cobalt ferrite system

“…2. It is know that cubic spinels have three IR bands due to tetrahedral and octahedral complexes [28,29]. However, the spectra of the investigated mixed solids consisted of two main absorption bands at 540 ± 20 cm −1 ( 1 ) and 410 ± 20 cm −1 ( 2 ).…”

Structural and magnetic properties of pure and doped nanocrystalline cadmium ferrite

“…The study of IR spectrum is an important tool to get information about the positions of the ions in the crystal through the crystal's vibration modes [20]. It is know that cubic spinels have three IR bands [21].…”

“…It is know that cubic spinels have three IR bands [21]. It has been reported that these bands are due to tetrahedral and octahedral complexes [20]. Fig.…”