Electrocaloric effect and luminescence properties of lanthanide doped (Na{sub 1/2}Bi{sub 1/2})TiO{sub 3} lead free materials

Journal Article · Mon Jul 20 00:00:00 EDT 2015 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4927280· OSTI ID:22486350

Zannen, M. ^[1]; Asbani, B.; El Marssi, M. ^[2]; Khemakhem, H. ^[3]; Es Souni, M. ^[1]

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1. Institute for Materials and Surface Technology, University of Applied Sciences, Kiel D-24149 (Germany)
2. Laboratory of Physics of Condensed Matter (LPMC), University of Picardie Jules Verne, Scientific Pole, 33 rue Saint-Leu, 80039 Amiens Cedex 1 (France)
3. Ferroelectric Materials Laboratory (LMF), LR Physics-Mathematics and Applications, Faculty of Sciences of Sfax (FSS), University of Sfax, Street Soukra km 3.5 BP 1171, 3000 Sfax (Tunisia)

Polycrystalline lead-free Sodium Bismuth Titanate (NBT) ferroelectric ceramics doped with rare earth (RE) element are prepared using solid state reaction method. Optical, ferroelectric, and electrocaloric properties were investigated. The introduction of RE{sup 3+} ions in the NBT host lattice shows different light emissions over the wavelength range from visible to near infrared region. The ferroelectric P-E hysteresis loops exhibit an antiferroelectric-like character near room temperature indicating possible existence of a morphotropic phase boundary. The enhanced electrocaloric response was observed in a broad temperature range due to nearly merged phase transitions. Coexistence of optical and electrocaloric properties is very promising for photonics or optoelectronic device applications.

• OSTI ID: 22486350
• Journal Information: Applied Physics Letters, Vol. 107, Issue 3; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BISMUTH
CERAMICS
DOPED MATERIALS
FERROELECTRIC MATERIALS
HYSTERESIS
LEAD
LUMINESCENCE
OPTOELECTRONIC DEVICES
PHASE TRANSFORMATIONS
POLYCRYSTALS
RARE EARTHS
RHENIUM IONS
SODIUM
TEMPERATURE RANGE 0273-0400 K
THERMOELECTRIC PROPERTIES
TITANATES
TITANIUM OXIDES
VISIBLE RADIATION
WAVELENGTHS