The metastable ε-Fe2O3 is known to be the most intriguing ferrimagnetic and multiferroic iron oxide phase exhibiting a bunch of exciting physical properties both below and above room temperature. The present paper unveils the structural and magnetic pec
Yellow dotted lines are added as a guide to the eye to mark the position of the interfaces between the BNFO matrix and Fe-rich phase. (f,g) Simulated Fe-L2,3 maps with overlapped (Bi0.7Nd0.3)FeO3 and (Fe0.6Bi0.25Nd0.15)FeO3 structure models, respectively, displayed on a common ...
XRD spectra results also confirmed the conclusion of Raman studies (Fig. 2b) (JCPDS 33-0664) [37]. Moreover, the XRD diffraction peak located at 38.18° (JCPDS 04-0784) indicates that the crystalline Au 880 . . . . . . . . . . . . . . . . . . . . . . . .©. .Sc...
Fe characteristic peaks in the XRD pattern is not obvious. This phenomenon may be due to the high degree of dispersion can’t accurately determine the position of the solid solution [43]. In addition, the FWHM (111) on the surface of CeO2 and Fe-CeO2 catalysts are also different. The ...
Compared with α-Fe2O3, the peak intensity of NG-Fe2O3, GO-Fe2O3 decreased dramatically. No obvious peaks related to graphene oxide were observed from the XRD Conclusion In conclusion, a pyrrolic-N doped graphene oxide/Fe2O3 mesocrystal nanocomposite has been prepared by a simple ...
Fig. 3 TGA and DSC curves for the formation of α/γ-Fe2O3 Then, a prominent weight loss of 44.81% occurs when the temperature is further increased to 318 °C due to the decom- position of organic ligands. An exothermic peak is simulta- neously observed at 304.93 °C...
where d is the mean diameter in Å, k a unit-less constant equal to 0.9, λ the wavelength of CuK α1 equal to 1.54 Å, B hkl the full width at half maximum of an individual peak and θ the peak position. In our case, the particle size was calculated by the most intense 311...
Keywords:InsituXRD;Nanocrystals;XANES;TEM;Kinetics;Maghemite;Hematite;Iron 1.Introductionshowsimilarbehaviorofcubicg-AlOandhexa- 23 gonala-AlO.Informationonthestabilityof 23 Itisknownthatcoarsegrainedmaghemite(g-maghemitewasmostlyobtainedbyDTA[5–7]. ...
the X-ray absorption peak of oxygen shifts to the direction of high energy, which reflects that the addition of Sn effectively improves the bonding energy of O in the lattice. A shoulder peak at 532.3 eV corresponds to the contribution of the Sn 5sorbit29,30. This shows that the Sn...
XRD patterns of all samples were collected in the range of 10–80° (2θ) using MiniFlex X-ray diffractometer. Raman spectra were obtained on a J-Y T64000 Raman spectrometer with 532 nm wavelength incident laser light. The Fourier transform infrared (FTIR) spectrum in the region of 500–...