Synthesis of Fe2O3 concentrations and sintering temperature on FTIR and magnetic susceptibility measured from 4 to 300K of monolith silica gel prepared by sol–gel technique

Synthesis and properties of α‐Fe2O3 nanorods

“…This subsequently undergoes the oriented aggregation involving linear attachment through their c-axis. [25,26]. The peak at 617 cm -1 is due to the longitudinal absorptions (A u ), whereas the band at 572 cm -1 and 490 cm -1 are due to the transverse absorption (E u ) of hematite nanorods.…”

Optical Properties of Nanostructured Sol–Gel Thin Films Doped with Fe<SUB>2</SUB>O<SUB>3</SUB> and Their Ferromagnetic Characterization by Mössbauer Spectroscopy

“…This band is attributed to the spinel Fe-O stretching, and is associated to the presence of hematite. 13 The band seen at 1582 cm −1 is due to a C O bond, due to the bridging type metalacetate bonding (M-OCOOM). The band at 1414 cm −1 is the C-O stretching frequencies and that at 1315 cm −1 is due to weakly bond acetic acid molecule (HOOC-R).…”

“…The most intense band is located at ∼1105 cm −1 due to asymmetric stretching of the Si-O-Si chain; its intensity increases by the presence of transition metal ions. 13 Figure 5(b) is an enlargement of FTIR spectrum shown in Figure 5 Table II Figures 6 and 7, respectively. The obtained spectra were almost identical.…”

Plasma enhanced chemical vapor deposition of iron doped thin dioxide films, their structure and photowetting effect

“…In addition, an extra absorption band at 434 cm −1 , associated with stretching vibrations of Ti-O bonds in anatase, appears in the FTIR spectra of the films containing 0.07% and 0.88% of iron [27]. In all the four spectra, a maximum at 615 cm −1 , associated with the presence of spinel Fe-O stretching bond vibrations in hematite (α Fe 2 O 3 ), is also present [28]. The intensity of this peak increases with an increasing iron content in the TiO 2 coating.…”