Raman scattering characterization of well‐aligned RuO₂ and IrO₂ nanocrystals

Abstract

Raman spectroscopy (RS) has been used as a technique for the characterization of well-aligned IrO

Characterization of aerosols from RDD surrogate compounds produced by fast thermal transients

“…All of this may suggest that the sample is vaporized as metallic Ir, and in fact this fluorescence behaviour has been reported for the Ir metal [23]. On the other hand, when the pellet was analysed by Raman spectroscopy, the bands of IrO 2 could be detected on the laser melted area (as reported in [24]). The discrepancy between aerosols and the oxidation state of the pellet can be explained by the fact that the oxidation occurs during the cooling of the pellet when aerosols are no longer released.…”

Growth direction determination of a single RuO2 nanowire by polarized Raman spectroscopy

“…18 Group theory predicts that its Raman active modes belong to the A 1g , B 1g , B 2g , and E g , representations. Figure 2 shows a series of polarizationdirection-dependent Raman spectra of a single RuO 2 NW as a function of the angle between the polarization vector and the wire's principle axis, for the parallel ͑ ʈ ͒ and perpendicular ͑ Ќ ͒ polarization configurations ͑i.e., respectively, with the incident and collection polarization coincident and at right angles to each other͒.…”

“…19 The B 1g mode-a soft phonon mode in the phase transition-is not observed in our measurements, due to the very small cross section of our NWs. 18 The intensities of the E g and A 1g phonon modes show pronounced polarization sensitivity ͑Fig. 2͒; however, the polarization-induced intensity variations in the 714 cm −1 , B 2g phonon mode cannot be determined with confidence on account of its low intensity.…”

Structural, electrical and optical properties of zinc‐iridium oxide thin films deposited by DC reactive magnetron sputtering

“…Dashed vertical lines in Fig. 4 show the positions of the characteristic peaks of crystalline IrO 2 (rutile) and ZnO (wurtzite) [9,10]. Experimental configuration allows to detect only E 2 high and A 1 LO in ZnO case.…”