Published 2002 | Version v1
Journal article Metadata-only

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

Creators

  • 1. Institute of Low Temperature and Structure Research, Polish Academy of Sciences, Wroclaw (Poland)
  • 2. Mechanical Faculty, Institute of Materials Science and Applied Mechanics, Wroclaw University of Technology, Wroclaw (Poland)
  • 3. Chemistry Department, Opole University, Opole (Poland)

Description

Eu3+-doped BaTiO3 nanocrystalline powders have been obtained by sol-gel method. The morphology, structure and dielectric properties have been investigated as a function of sintering temperature. The powders sintered at the temperatures below 800 oC demonstrate luminescence behaviour characteristic of the inversed symmetry Eu3+ sites, were 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 transition. (author)

Additional details

Publishing Information

Journal Title
Materials Science
Journal Volume
20
Journal Issue
1
Journal Page Range
p. 43-50
ISSN
0137-1339

Conference

Title
International Conference on Sol-Gel Materials, SGM 2001
Dates
2001
Place
Rokosowo (Poland)

INIS

Country of Publication
Poland
Country of Input or Organization
Poland
INIS RN
35061898
Subject category
S36: MATERIALS SCIENCE;
Resource subtype / Literary indicator
Conference
Descriptors DEI
BARIUM; CRYSTAL STRUCTURE; DIELECTRIC PROPERTIES; DOPED MATERIALS; EMISSION SPECTRA; ENERGY-LEVEL TRANSITIONS; EUROPIUM ADDITIONS; FERROELECTRIC MATERIALS; LUMINESCENCE; NANOSTRUCTURES; PERMITTIVITY; POWDERS; SINTERED MATERIALS; SOL-GEL PROCESS; TEMPERATURE DEPENDENCE; TIME DEPENDENCE; TITANATES; X-RAY DIFFRACTION
Descriptors DEC
ALKALINE EARTH METALS; ALLOYS; COHERENT SCATTERING; DIELECTRIC MATERIALS; DIELECTRIC PROPERTIES; DIFFRACTION; ELECTRICAL PROPERTIES; ELEMENTS; EMISSION; EUROPIUM ALLOYS; MATERIALS; METALS; OXYGEN COMPOUNDS; PHOTON EMISSION; PHYSICAL PROPERTIES; RARE EARTH ADDITIONS; RARE EARTH ALLOYS; SCATTERING; SPECTRA; TITANIUM COMPOUNDS; TRANSITION ELEMENT COMPOUNDS

Optional Information

Contract/Grant/Project number
KBN grant PBZ-KBN-013/T08/45
Notes
20 refs, 5 figs, 1 tab.