Title :
Relationship of spectral characteristics and crystal morphology of h-WO3 nanoplates
Author :
Troitskaia, Irina B. ; Gavrilova, Tatiana A. ; Atuchin, Victor V.
Author_Institution :
Lab. of Opt. Mater. & Struct., A.V.Rzhanov Inst. of Semicond. Phys., Novosibirsk, Russia
Abstract :
Nanocrystals of h-WO3 (P6/mmm, PDF 33-1387) with uncommon morphology of nanoplates with ~10 nm thickness and up to 200 nm in diameter have been precipitated with nitric acid from aqua ammonium tungstate solution. The h - β phase transition occurs at T= 385°C as it have been established with DTA and XRD measurements. IR and Raman spectra have been recorded for precipitated and calcined phases. These crystals show some specific features explained as an effect of uncommon micromorphology and nanosize range geometry.
Keywords :
Raman spectra; X-ray diffraction; calcination; crystal morphology; differential scanning calorimetry; infrared spectra; nanofabrication; nanostructured materials; precipitation (physical chemistry); solid-state phase transformations; tungsten compounds; DTA; IR spectra; Raman spectra; WO3; XRD; aqua ammonium tungstate solution; calcination; crystal morphology; nanocrystals; nanoplates; phase transition; precipitation; size 10 nm; spectral property; temperature 385 degC; Calcination; Crystals; Nanocrystals; Nanoscale devices; Tungsten; Vibrations; Nanoplate; h-WO3; micromorphology;
Conference_Titel :
Micro/Nanotechnologies and Electron Devices (EDM), 2012 IEEE 13th International Conference and Seminar of Young Specialists on
Conference_Location :
Erlagol, Altai
Print_ISBN :
978-1-4673-2517-2
DOI :
10.1109/EDM.2012.6310183
