1. Control of the shape and size of iron oxide (α-Fe2O3 ...

    https://www.sciencedirect.com/science/article/pii/S2211379717312366

    XRD patterns of iron oxide (α-Fe 2 O 3) obtained with chemical precipitation method using different concentrations of precursor. Given that line broadening of diffraction peaks is affected by the crystallite size and internal strains, the approximate crystallite size “D c ” is evaluated using the following Scherer’s equation [32] .

  2. In XRD pattern , the majority phase found to be α-Fe 2 O 3, with small contribution of γ-Fe 2 O 3.

  3. The patterns of XRD for irons oxides samples?

    https://www.researchgate.net/post/The_patterns_of_XRD_for_irons_oxides_samples

    The good old Debye-Scherrer photographic film method or a Laue transmission image will capture a larger portion of the 2D XRD signal (WHOLE PATTERN) than a spatially blind equatorial scan ...

  4. Synthesis and Characterization of Iron Oxide Nanoparticles ...

    https://www.jim.or.jp/journal/e/pdf3/53/11/2056.pdf

    3.2 Phase analysis by X-ray diffraction Iron oxides have many phases, including magnetite (Fe 3O 4), maghemite (£-Fe 2O 3), hematite (¡-Fe 2O 3) and wüstite (FeO). Figures 2(a)­2(c) shows X-ray diffraction patterns of the nanoparticles exploded in Ar­5%O 2,Ar­ 10%O 2 and Ar­30%O 2 gases. The peaks marked with

  5. X-ray absorption spectroscopy characterization of iron ...

    https://arxiv.org/pdf/1401.3655

    A DC arc plasma has been used to generate oxide nanoparticles of iron. The electric arc. was struck between the anode made with an iron metal block of diameter 40 mm. (Goodfellow chemicals, purity 99.8%) and the cathode made with an iron rod of 10 mm.

  6. (PDF) Properties of Iron Oxide Nanoparticles Synthesized ...

    https://www.researchgate.net/publication/328478032_Properties_of_Iron_Oxide_Nanoparticles_Synthesized_at_Different_Temperatures

    The mean particle sizes of iron oxide nanoparticles were calculated from the X-ray diffraction (XRD) patterns using the Scherrer equation. Fourier transform infrared spectroscopy analysis exhibited...

  7. SYNTHESIS AND CHARACTERIZATION OF IRON OXIDE POWDERS

    http://www.imr.saske.sk/pmp/issue/3-4-2011/PMP_Vol11_No3-4_p_201-205.pdf

    α-Fe2O3is an n-type semiconductor, having a small band gap (2.1 eV) [10] and is the most stable iron oxide under ambient conditions. Because of its small bang gap, hematite can absorb about 40% of the sunlight [11] which is an important advantage for its use in solar energy conversion.

  8. Crystallography of Iron - Harry Bhadeshia

    https://www.phase-trans.msm.cam.ac.uk/2003/Lattices/iron.html

    Diffraction pattern of ferrite and γ-Fe 2 O 3 from a thin foil sample of steel. The oxide forms on the surface and makes a significant contribution to the overall pattern when the foil thickness is reduced. Also available are the crystal structure, caculated electron diffraction pattern and d-spacings for the iron oxide. The pattern was taken ...

  9. PREPARATION AND CHARACTERIZATION OF ZERO VALENT IRON ...

    http://www.chalcogen.ro/1771_Yuvakkaur.pdf

    Fig. 2b shows the powder XRD pattern of nZVI samples under ambient conditions. The broad peak reveals the existence of an amorphous phase of iron. The characteristic broad peak at 2θ of 45º indicates that the zero valent iron is predominantly present in the sample. Fig. 2c shows the SEM image of freshly synthesized iron nanoparticles.