2010年1月31日 · Raman spectrum displays that the Al 2 O 3 microcones match better with single crystal than bulk Al 2 O 3, revealing a good crystalline nature. The photoluminescence (PL) spectrum reveals a strong red luminescence at 693 nm and three small-shoulder emission bands at 677, 706 and 712 nm, respectively.

Raman spectra of sapphire (α-Al 2 O 3 ). The interface of ZERODUR ceramics and thin aluminium film was investigated by Raman and secondary ion mass-spectroscopy...

Al 2 O 3 Raman spectroscopy is a powerful tool of nondestructive material characterization, which has been used to study different crystalline structures. Thus, Sapphire Raman spectra can provide much insight into the phonon vibration patterns to facilitate structural analysis.

2011年1月23日 · The accurate harmonic vibration frequencies together with the infrared (IR) and Raman intensities of the most stable conformers of Al2O2 and Al2O3 molecules have been calculated by the density functional theory (DFT) method with B3LYP exchange–correlation potential and using a set of the augmented correlated consistent basis sets up to ...

2010年1月31日 · Raman spectrum displays that the Al2 O 3 microcones match better with single crystal than bulk Al2 O 3, revealing a good crystalline nature. The photoluminescence (PL) spectrum reveals a strong red luminescence at 693 nm and three small-shoulder emission bands at 677, 706 and 712 nm, respectively.

Raman spectra of amorphous Al 2 O 3 and Al 2 O 3 /MoO 3 obtained by visible and infrared excitation. A. Mortensen, A. Mortensen. University of Copenhagen, Institute of Chemistry, Department of Chemical Physics, The H. C. Ørsted Institute, Universitetsparken 5, DK-2100 Copenhagen Ø, Denmark.

1976年1月1日 · Our experiments show that oxide concentrations as low as 2 mole % can be detected in aluminum fluoride melts by Raman spectroscopy. All new bands observed associated with the oxide were below 600 cm −1 (530, 460, 310, and 185 cm −1).

The Fourier transform IR and Raman spectra of (C6H16N4O22+·2NO3−) crystal were studied and the observed IR and Raman lines were assigned. There is extensive intermolecular hydrogen bonding in the …

2010年1月31日 · Raman spectrum displays that the Al2O3 microcones match better with single crystal than bulk Al2O3, revealing a good crystalline nature. The photoluminescence (PL) spectrum reveals a...

In this paper, Raman spectra of Al 2 O 3 are reported that were acquired with different excitation frequencies as well as different spectrometers and different temperatures. It is shown that, whereas at an excitation frequency of 1064 nm a strong fluorescence background is observed, a sample of Al 2 O 3 heated at 1250 °C when excited with a ...