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

fYear

2012

fDate

2-6 July 2012

Firstpage

38

Lastpage

41

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/EDM.2012.6310183

Filename

6310183