Structure, spectroscopy and dielectric properties of BaTiO3:Eu3+ nanocrystallites prepared by the sol-gel method

• Autorzy: Hreniak D. , Łukowiak E. , Maruszewski K. , Pązik R. , Stręk W.
• Konferencja: International Conference on Sol-Gel materials SGM 2001, Rokosowo, Poland
• Języki publikacji: EN

Abstrakty

EN

Eu3+-doped BaTiO3 nanocrystalline powders have been obtained by sol-gel method. Their morphology, structure and dielectric properties have been investigated as a function of sintering temperature. The powders sintered at the temperatures below 800 st.C demonstrate luminescence behaviour characteristic of the inversed symmetry Eu3+ sites, where only the 5D0 ??7F1 transitions are allowed. Above this temperature the system undergoes a phase transition characterized by lack of inversion symmetry enabling the dipole-electric transitions.

Słowa kluczowe

EN

barium titanate; europium; nanocrystallites; sol-gel processing; luminescence

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Materials Science
• Rocznik: 2002
• Tom: Vol. 20, No. 1
• Strony: 43--50
• Opis fizyczny: Bibliogr. 20 poz.,

Twórcy

autor

Hreniak D.

autor

Łukowiak E.

autor

Maruszewski K.

autor

Pązik R.

autor

Stręk W.

• Institute for Low Temperature and Structure Research, Polish Academy of Sciences, Wrocław, Poland