6533b831fe1ef96bd1298e01

RESEARCH PRODUCT

Luminescence, vibrational and XANES studies of AlN nanomaterials

Ivan KarbovnykGianfelice CinqueVolodymyr SavchynAugusto MarcelliN. KrutyakC. BalasubramanianAnatoli I. PopovStefano Bellucci

subject

RadiationMaterials scienceAbsorption spectroscopyAluminium nitrideAnalytical chemistryInfrared spectroscopyCathodoluminescenceNitrideXANESchemistry.chemical_compoundchemistryAbsorption (electromagnetic radiation)InstrumentationWurtzite crystal structure

description

Abstract The paper reports comparative studies on synthesized aluminium nitride nanotubes, nanoparticles and commercially available micron-sized AlN powder using different spectroscopic techniques: cathodoluminescence measurements (CL), X-ray absorption near edge spectroscopy (XANES) and Fourier-transform infrared spectroscopy (FTIR). Crucial distinctions in CL spectra are observed for nano- and microsized aluminium nitride powders; systematic shift of the IR absorption maximum has been detected for nanostructured aluminium nitride as compared to commercial samples. Through XANES experiments on Al K-edge structural differences between nano- and bulk AlN are revealed, intensity of features in absorption spectra has been found to be a function of wurtzite and zincblend phases amount in nanostructured samples.

yearjournalcountryeditionlanguage
2007-04-01Radiation Measurements
https://doi.org/10.1016/j.radmeas.2007.01.072