Journal
MATERIALS RESEARCH BULLETIN
Volume 46, Issue 12, Pages 2204-2207Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.materresbull.2011.09.010
Keywords
Magnetic materials; Nanostructures; Chemical synthesis; Raman spectroscopy; Magnetic properties
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Using nickel and ferric nitrates and citric acid, NiFe2O4 nanoparticles are prepared by a simple and cost-effective polyvinylpyrrolidone (PVP) assisted sol-gel auto-combustion method. The synthesised nanoparticles consist of single phase inverse spinel structure of NiFe2O4. The particles are in spherical shape with an average size of similar to 8 nm. The vibrational properties show tetrahedral and octahedral sites of NiFe2O4 nanoparticles. The super-paramagnetism is observed with magnetic saturation (M-s) of 50.4 emug(-1). (C) 2011 Elsevier Ltd. All rights reserved.
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