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2007 | 5 | 2 | 570-580
Tytuł artykułu

Synthesis and magnetic properties of octahedral ferrite NiχCo1−χ Fe2O4 nanocrystals

Treść / Zawartość
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
A series of Ni doped cobalt ferrite compounds with the formula Niχ Co1−χ Fe2O4 where x=0, 0.2, 0.4, 0.6, 0.8, and 1.0 were prepared using a hydrothermal method and subsequently sintered/annealed at 600 °C for 3 h. The influence of the Ni content on the lattice parameter, a, stretching vibration and the magnetization of specimens were subsequently studied. XRD and FTIR were used to investigate structure and composition variations. All samples were found to have a cubic spinel structure. SEM was used to study morphological variations. The results indicate that the average particle sizes are between 30–35 nm with a narrow size distribution along with nanocrystals forming of regular octahedrons. A decrease in the peak to peak line width and increase in resonance field with increasing Ni content were observed from ESR measurements. Based on ESR results, a core-shell type of formation was proposed where the core is made up of undoped CoFe2O4 and the shell is Ni2+ doped CoFe2O4. [...]
Wydawca

Czasopismo
Rocznik
Tom
5
Numer
2
Strony
570-580
Opis fizyczny
Daty
wydano
2007-06-01
online
2007-01-23
Twórcy
  • Department of Chemistry, Fatih University, 34500, Buyukcekmece, Istanbul, Turkey
  • Department of Chemistry, Fatih University, 34500, Buyukcekmece, Istanbul, Turkey
  • Department of Chemistry, Fatih University, 34500, Buyukcekmece, Istanbul, Turkey, hbaykal@fatih.edu.tr
  • Department of Physics, Fatih University, 34500, Buyukcekmece, Istanbul, Turkey
  • Department of Chemistry and Biochemistry, University of California, Santa Barbara, CA, 93106, USA
Bibliografia
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Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.-psjd-doi-10_2478_s11532-007-0005-0
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