Properties of BaTiO3 confined in opal matrices — lattice packings of nanospheres silica dioxide

Author

Nuzhnyy, D. ; Vanek, P. ; Petzelt, J. ; Bovtun, V. ; Kempa, M. ; Gregora, I. ; Savinov, M. ; Krupkova, R. ; Studnicka, V. ; Samoylovich, M.I. ; Rinkevich, A.B. ; Belyanin, A.F. ; Klescheva, S.M.

Author_Institution

Inst. of Phys. ASCR, Prague, Czech Republic

fYear

2010

fDate

12-14 Sept. 2010

Firstpage

47

Lastpage

49

Abstract

Using the sol-gel technique, BaTiO₃ was embedded in opal matrices that are the lattice packings of silica dioxide nanospheres for the first time. The room-temperature IR and Raman spectra clearly show characteristic vibrational modes of the ferroelectrically distorted TiO₆ octahedra without any long-range order. Raman spectra bring evidence of a diffuse ferroelectric phase transition in the opal-BaTiO₃ composite.

Keywords

Raman spectra; barium compounds; ferroelectric transitions; infrared spectra; nanofabrication; nanostructured materials; silicon compounds; sol-gel processing; vibrational modes; BaTiO₃-SiO₂; diffuse ferroelectric phase transition; ferroelectrically distorted octahedra; lattice packings; nanospheres; opal matrices; room-temperature IR spectra; room-temperature Raman spectra; sol-gel technique; vibrational modes; Conferences; Decision support systems; Fiber lasers; Laser modes; Optical fiber networks;

fLanguage

English

Publisher

ieee

Conference_Titel

Laser and Fiber-Optical Networks Modeling (LFNM), 2010 10th International Conference on

Conference_Location

Sevastopol

Print_ISBN

978-1-4244-6994-9

Type

conf

DOI

10.1109/LFNM.2010.5624187

Filename

5624187