Title :
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
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;
Conference_Titel :
Laser and Fiber-Optical Networks Modeling (LFNM), 2010 10th International Conference on
Conference_Location :
Sevastopol
Print_ISBN :
978-1-4244-6994-9
DOI :
10.1109/LFNM.2010.5624187
