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Title: Room temperature optical and dielectric properties of Sr and Ni doped lanthanum ferrite nanoparticles

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.
Authors:
; ; ;  [1]
  1. Centre of Excellence in Materials Science (Nanomaterials), Department of Applied Physics, Z.H. College of Engg. & Technology, Aligarh Muslim University, Aligarh 202002 (India)
Publication Date:
OSTI Identifier:
22490246
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1665; Journal Issue: 1; Conference: 59. DAE solid state physics symposium 2014, Tamilnadu (India), 16-20 Dec 2014; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 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