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Title: Mixed magnetic phases in Co{sub 3}O{sub 4} nanoparticles synthesized by co-precipitation method

In the present manuscript, Co{sub 3}O{sub 4} nanoparticles have been synthesized with the help of co-precipitation method and studied the structural, optical and magnetic properties. X ray diffraction analysis of the synthesized samples reveals the formation of single phase cubic spinel structure with the space group Fd-3m. FESEM and TEM results indicate the formation of nano-sized particles. The optical measurement reveals the two band gaps ∼2.77 and 1.67 eV in the sample. Magnetic measurement shows weak ferromagnetic interaction in Co{sub 3}O{sub 4} along with usual paramagnetic nature at room temperature. However, at low temperatures the sample shows antiferromagnetic interaction. The correlation between the structural and observed magnetic and optical properties of Co{sub 3}O{sub 4} nanoparticles will be described and discussed in this paper.
Authors:
;  [1] ;  [2]
  1. Department of Physics, Indian Institute of Technology, Roorkee-247667 (India)
  2. Department of Applied Sciences, I.I.T. Roorkee (Saharanpur Campus), Saharanpur-247001 (India)
Publication Date:
OSTI Identifier:
22269504
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1591; Journal Issue: 1; Conference: 58. DAE solid state physics symposium 2013, Patiala, Punjab (India), 17-21 Dec 2013; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; ANTIFERROMAGNETISM; COBALT OXIDES; COPRECIPITATION; CORRELATIONS; CUBIC LATTICES; MAGNETIC PROPERTIES; NANOSTRUCTURES; OPTICAL PROPERTIES; PARAMAGNETISM; PARTICLE SIZE; PARTICLES; SCANNING ELECTRON MICROSCOPY; TEMPERATURE DEPENDENCE; TRANSMISSION ELECTRON MICROSCOPY; X-RAY DIFFRACTION