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Author Naseem, Swaleha ♦ Khan, Wasi ♦ Singh, B. R. ♦ Naqvi, A. H.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY ♦ ABSORPTION SPECTROSCOPY ♦ CHARGE TRANSPORT ♦ DOPED MATERIALS ♦ ENERGY GAP ♦ EV RANGE ♦ FERRITES ♦ LANTHANUM COMPOUNDS ♦ LAYERS ♦ MICROSTRUCTURE ♦ NANOPARTICLES ♦ NICKEL COMPOUNDS ♦ OPTICAL PROPERTIES ♦ PERMITTIVITY ♦ RELAXATION TIME ♦ SCANNING ELECTRON MICROSCOPY ♦ TEMPERATURE RANGE 0273-0400 K ♦ X-RAY DIFFRACTION
Abstract Strontium and nickel doped lanthanum ferrite (LaFeO{sub 3}) nanoparticles (NPs) were prepared reverse micelle (RM) and calcinated at 700°C. Microstructural studies were carried by XRD and SEM/EDS techniques. The results of structural characterization show the formation of all samples in single phase without any impurity. Optical properties were studied by UV- visible spectroscopy and band gap energy was estimated 3.89 eV. Room temperature dielectric constant (ε’) decreases abruptly at lower frequencies owing to the charge transport relaxation time. The observed behavior of the dielectric properties can be attributed on the basis of Koop’s theory based on Maxwell-Wagner’s two layer model in studied nanoparticles.
ISSN 0094243X
Educational Use Research
Learning Resource Type Article
Publisher Date 2015-06-24
Publisher Place United States
Volume Number 1665
Issue Number 1


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