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

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.
Authors:
 [1] ;  [2] ;  [1] ;  [3] ; ;  [4] ;  [5] ;  [6] ;  [1]
  1. Institute for Materials and Surface Technology, University of Applied Sciences, Kiel D-24149 (Germany)
  2. (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)
  3. (LPMC), University of Picardie Jules Verne, Scientific Pole, 33 rue Saint-Leu, 80039 Amiens Cedex 1 (France)
  4. Laboratory of Physics of Condensed Matter (LPMC), University of Picardie Jules Verne, Scientific Pole, 33 rue Saint-Leu, 80039 Amiens Cedex 1 (France)
  5. 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)
  6. Jozef Stefan Institute, Jamova cesta 39, 1000 Ljubljana (Slovenia)
Publication Date:
OSTI Identifier:
22486350
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 107; Journal Issue: 3; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
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