skip to main content

SciTech ConnectSciTech Connect

Title: Room temperature long range ferromagnetic ordering in Ni{sub 0.58}Zn{sub 0.42}Co{sub 0.10}Cu{sub 0.10}Fe{sub 1.8}O{sub 4} nano magnetic system

The structural and magnetic behavior of sol-gel autocombustion synthesized nanocrystalline Ni{sub 0.58}Zn{sub 0.42}Co{sub 0.10}Cu{sub 0.10}Fe{sub 1.8}O{sub 4} have been investigated by X-ray diffraction (XRD), transmission electron microscopy (TEM), Mössbauer spectroscopy and vibrating sample magnetometer(VSM). Sample of high purity and high homogeneity was obtained by calcination at low temperature (500°C) resulting in nanoparticles of average diameter ∼15nm as determined by XRD and further confirmed by TEM. X-ray diffraction (XRD) and selective area diffraction (SAED) confirmed the single phase of the sample. Mössbauer results are supported by magnetization data. Well defined sextets and appearance of hysteresis at room temperature indicate the existence of ferromagnetic coupling at room temperature finding material utility in magnetic storage data. The existence of iron in ferric state confirmed by isomer shift is a clear evidence of improved magnetic properties of the present system.
Authors:
; ; ;  [1] ;  [2] ;  [3]
  1. Department of Physics, Himachal Pradesh University, Shimla 171005 (India)
  2. National Physical Laboratory, Pusa Road, New Delhi 110012 (India)
  3. King Abdullah Institute for Nanotechnology, Riyadh, 11451 (Saudi Arabia)
Publication Date:
OSTI Identifier:
22490289
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; CALCINATION; COBALT COMPOUNDS; COPPER COMPOUNDS; CRYSTALS; ELECTRON DIFFRACTION; FERRITES; FERROMAGNETISM; ISOMER SHIFT; MAGNETIC PROPERTIES; MAGNETIZATION; MOESSBAUER EFFECT; NANOPARTICLES; NANOSTRUCTURES; NICKEL COMPOUNDS; SOL-GEL PROCESS; TEMPERATURE DEPENDENCE; TRANSMISSION ELECTRON MICROSCOPY; VIBRATING SAMPLE MAGNETOMETERS; X-RAY DIFFRACTION; ZINC COMPOUNDS