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Title: The effect of annealing on the structural and magnetic properties of Ni-ferrite nanocrystals

Magnetic nanoparticles NiFe{sub 2}O{sub 4} were prepared by chemical co-precipitation technique using the chlorides of Ni, Fe (III) and oleic acid. The precursors were annealed at different temperature 500, 700, and 900 °C. The XRD of samples show the presence of inverse cubic spinel structure. Grain size was determined using Scherrer formula and SEM technique. The Particle size, Lattice parameter and X-ray density were also estimated from X-ray diffraction data. The particles size was found to vary from 17nm to 37 nm and largely depends on the annealing temperature. Magnetization measurements have also carried out using VSM and it was found that saturation magnetization (Ms), Remanance (Mr) and coercivity (H{sub c}) of nano ferrite materials are lower compared to bulk materials.
Authors:
; ;  [1] ;  [2]
  1. School of Studies in Physics, Jiwaji University, Gwalior (India)
  2. Govt. Post Graduate College Dholpur, Rajasthan (India)
Publication Date:
OSTI Identifier:
22490239
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; ANNEALING; COERCIVE FORCE; COMPARATIVE EVALUATIONS; COPRECIPITATION; FERRITES; GRAIN SIZE; IRON CHLORIDES; LATTICE PARAMETERS; MAGNETIC PROPERTIES; MAGNETIZATION; NANOPARTICLES; NANOSTRUCTURES; NICKEL CHLORIDES; OLEIC ACID; PARTICLE SIZE; SCANNING ELECTRON MICROSCOPY; SPINELS; VIBRATING SAMPLE MAGNETOMETERS; X-RAY DIFFRACTION