Presents a study that determined the Raman-active phonon mode of vibrational spectra of the high pressure phase of ferric oxides using Raman spectroscopy. Examination of phonon contribution to thermodynamic parameters; Estimation of upper bound magnon contribution; Analysis of pressure-induced phase ...
Here, Raman microscopy was employed to investigate the laser power dependence of the spectra of these oxides and oxyhydroxides. Low laser power was used for the reference spectra in order to minimize the risks of spectral changes due to sample degradation. The results obtained show that increasing...
A Raman study of the systems Fe 3− x Cr x O 4 and Fe 2− x Cr x O 3 ☆doi:10.1016/0022-4596(89)90245-4Raman spectra off the solid solutions Fe3−xCrxO4 (0 ≤ x ≤ 2) and Fe2−xCrxO3 (0 ≤ x ≤ 2) have been obtained. The fundamental, overtone, and combination...
A. Anomalously intense Raman spectra of pyridine at a silver electrode. J. Am. Chem. Soc. 99, 5215–5217 (1977). Article Google Scholar Li, J.-F., Zhang, Y.-J., Ding, S.-Y., Panneerselvam, R. & Tian, Z.-Q. Core–shell nanoparticle-enhanced Raman spectroscopy. Chem. Rev. ...
The interaction of the protons with the atomic electrons in the sample generates X-rays, which are characteristic of the atomic species. They were collected by a two-detector system: their energy identifies the element and their yield leads to its concentration. The X-ray energy spectra were ...
摘要: A surface-enhanced Raman spectroscopy (SERS)—active structure for use in Raman scattering detection has an array of nanostructures formed on a substrate by deposition and chemical etching. The nanostructures are coated with metal nanoparticles....
In situ Raman spectra of hydrous wadsleyite (尾-Mg2SiO4) with ~1.5 wt% HXiaozhi Yang,Leonid Dubrovinsky,M. A. G. M. Manthilake,... - 《physics\\&\\chemistry of minerals》 被引量: 9发表: 2012年 Infrared and Raman Spectroscopic Study of Glasses in the Al2O3-B2O3-Fe2O3-Na2O-Si...
The valence state of Fe in the PtFe nanocatalyst was determined by XPS (green data points in the lower part of Fig. 3a). For reference, XPS spectra of Fe in different oxidation states were obtained by controlling the sampling depth via Ar þ sputtering (blue, red and black curves in ...
In some cases, however, high laser power on the surface should cause sample degradation, leading to the misinterpretation of Raman spectra. The sensitivity of Raman spectra in the function of laser power will also depend on the surface morphology, at least in the case of magnetite (Fe3O4)....
Burgio et al./Journal of Molecular Structure 405 (1997) 1-11 (a) (d) 7 ,60 ¢- 36o 260 (b) c 0 E 0 460 360 260 (c) 760 soo 360 (c) ~6o ,6o 26o (f) 400 360 260 ,6o 660 14bo W a v c n u m b c r / cm-~ 120o Fig. 2. Raman spectra of pigments ...