Journal ArticleDOI
Neutron and X-ray diffraction studies of certain doped nickel ferrites
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In this paper, X-ray diffraction measurements of NiFe2-xMnxO4 with x=0.02 and 0.05 were obtained by a conventional ceramic technique.Abstract:
Polycrystalline ferrites of compositions NiFe2-xMnxO4 with x=0.02 and 0.05 were obtained by a conventional ceramic technique. Neutron diffraction measurements of the oxygen parameter u and X-ray diffraction measurements of the cell dimension a of the samples are presented. The u parameter of either sample is not particularly sensitive to the degree of inversion y. Doping of x=0.02 preserves the unit cell of NiFe2O4 unaffected while x=0.05 significantly enlarges the A sites of the ferrite.read more
Citations
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Effect of cobalt substitution on structural, magnetic and electric properties of nickel ferrite
TL;DR: A series of cobalt-doped nickel ferrite with composition of Ni (1− x ) Co x Fe 2 O 4 with x ranges from 0.0 to 0.8 (in steps of 0.2) was prepared by using standard ceramic technique as discussed by the authors.
Journal ArticleDOI
Study of mixed ternary transition metal ferrites as potential electrodes for supercapacitor applications
TL;DR: In this paper, the phase development of three mixed ternary transition metal ferrite (MTTMF) was determined using Fourier transform infrared (FT-IR) and thermal gravimetric analysis (TG).
Journal ArticleDOI
Synthesis and Characterization of Hydrotalcites Containing Ni(II) and Fe(III) and Their Calcination Products
TL;DR: In this article, a double hydroxide with the hydrotalcite-like structure containing Ni(II) and Fe(III) cations in the brucitelike layers with the formula [Ni0.7Fe0.3(OH)2](CO3)0.15·0.94 H2O has been prepared by coprecipitation.
Journal ArticleDOI
The crystal chemistry of AM2O4 oxometallates
TL;DR: In this paper, the crystal chemistry of oxometallates with composition AM2O4 was summarized, which indicates that more than 50 individual structure types regarding the formulae AM 2O4 or A2MO4 exist, including spinels, spineloids, compounds with closed and interrupted octahedra layers, tunnel structures, as well as square-planar polygons and dumbbells.
Journal ArticleDOI
Nickel ferrite nanoparticles: elaboration in polyol medium via hydrolysis, and magnetic properties
S. Chkoundali,Souad Ammar,Noureddine Jouini,Noureddine Jouini,Fernand Fiévet,Philippe Molinié,M. Danot,F. Villain,Jean-Marc Greneche +8 more
TL;DR: In this article, an in-field Mossbauer study showed that the NiFe2O4 particles exhibit very interesting magnetic properties: they are superparamagnetic at room temperature and have a saturation magnetization close to that of the bulk at low temperature.
References
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Journal ArticleDOI
Neutron Diffraction Study of Manganese Ferrite
J. M. Hastings,L. M. Corliss +1 more
TL;DR: In this paper, the fraction of tetrahedral sites occupied by polycrystalline Mn${\mathrm{Fe}}+2}$ has been found to be 0.03.
Journal ArticleDOI
Neutron Diffraction Studies of Zinc Ferrite and Nickel Ferrite
J. M. Hastings,L. M. Corliss +1 more
TL;DR: In this paper, the chemical and magnetic structures of zinc ferrite and nickel ferrite have been investigated at room temperature by means of neutron diffraction, and it has been shown that zinc has a completely regular spinel structure with an oxygen parameter of 0.385.