Journal
MATERIALS LETTERS
Volume 64, Issue 10, Pages 1144-1146Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2010.02.031
Keywords
Nanomaterials; Structural properties; Magnetic properties; Neel temperature
Funding
- The National Foundation for Science, Higher Education and Technological Development of the Republic of Croatia
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Thermally induced changes of nanocrystalline NiFe(2)O(4) spinet synthesized by sol-gel auto-ignition method are investigated using X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy and magnetization measurements (VSM). The average grain size of NiFe(2)O(4) increases from about 29 to 50 nm as the calcination temperature increases from 500 to 1000 degrees C. The IR spectra show the absorption bands corresponding to stretching vibrations of tetrahedral and octahedral bonds. The Neel temperature of NiFe(2)O(4) for various grain sizes were determined by the direct measurement of magnetization. (C) 2010 Elsevier B.V. All rights reserved.
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