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Title: Rapid phase synthesis of nanocrystalline cobalt ferrite

Synthesis of single phase nanocrystalline Cobalt Ferrite (CoFe{sub 2}O{sub 4}) was achieved by single step autocombustion technique with the use of citric acid as a chelating agent in mono proportion with metal. Specimens prepared with this method showed significantly higher initial permeability's than with the conventional process. Single phase nanocrystalline cobalt ferrites were formed at very low temperature. Surface morphology identification were carried out by transmission electron microscopy (TEM) analysis. The average grain size and density at low temperature increased gradually with increasing the temperature. The single phase formation is confirmed through powder X-ray diffraction analysis. Magnetization measurements were obtained at room temperature by using a vibrating sample magnetometer (VSM), which showed that the calcined samples exhibited typical magnetic behaviors. Temperature dependent magnetization results showed improved behavior for the nanocrystalline form of cobalt ferrite when compared to the bulk nature of materials synthesized by other methods.
Authors:
 [1] ;  [2] ;  [3] ;  [4]
  1. Department of Physics, Paavai Engineering College, Namakkal -637018 (India)
  2. Department of Physics, Vel Tech University, Avadi, Chennai - 600 062 (India)
  3. Department of Physics, Mahendra Engineering College, Mallasamudram -637503 (India)
  4. Department of Physics, University College of Engineering, Anna University Chennai, Arni- 632317 (India)
Publication Date:
OSTI Identifier:
22269496
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; COBALT COMPOUNDS; COMPARATIVE EVALUATIONS; CRYSTALS; FERRITES; GRAIN SIZE; MAGNETIZATION; NANOSTRUCTURES; POWDERS; SURFACES; TEMPERATURE DEPENDENCE; TRANSMISSION ELECTRON MICROSCOPY; VIBRATING SAMPLE MAGNETOMETERS; X-RAY DIFFRACTION