Effects on direct synthesis of large scale mono-disperse Ni0.5Zn0.5Fe2O4 nanosized particles

Li, Xia; Li, Qiang; Xia, Zhiguo; Yan, Wenxun

doi:10.1016/j.jallcom.2007.04.214

Cited by 30 publications

(20 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To obtain nano-crystalline powders with high homogeneity and uniform structure, many techniques have been provided for the synthesis of the ferrites spinel powders. These methods are sol-gel [11][12][13][14], organic precursors [3,15], hydrothermal [6,16], co-precipitation [17][18][19][20], cathodic electrophoretic deposition (EPD) [21], mechanochemical synthesis [22], reverse micelle [23], and electrochemical deposition [24,25]. The chemical co-precipitation method ensures proper distribution of the various metals ions resulting to stoichiometric and smaller particles size product, compared to some of the other procedures.…”

Section: Introductionmentioning

confidence: 99%

Structure and magnetic properties of NixZn1−xFe2O4 nanoparticles prepared through co-precipitation method

Rashad

Elsayed

Moharam

et al. 2009

Journal of Alloys and Compounds

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

Structure and magnetic properties of NixZn1−xFe2O4 nanoparticles prepared through co-precipitation method

Rashad

Elsayed

Moharam

et al. 2009

Journal of Alloys and Compounds

View full text Add to dashboard Cite

“…[1][2][3] Spinel ferrites have the general molecular formula M 2+ Fe 2 3+ O 4 2− , where divalent metal cations M 2+ and Fe 3+ occupy tetrahedral ͑A͒ and octahedral ͑B͒ interstitial positions of the fcc lattice formed by O 2 2− ions. Both dielectric and magnetic properties of these oxides depend on the type of cations and their distribution among the two interstitial positions, which in turn depends on the method of synthesis and calcination conditions 4,5 and the film density. 6 The grain size increases with increasing calcination temperature of NiZn ferrites 7,8 and the dielectric constant increases when the grain grows.…”

Section: A Concept Of Microwave Heating With Ferrite Thin Filmsmentioning

confidence: 99%

Structural investigations and magnetic properties of sol-gel Ni0.5Zn0.5Fe2O4 thin films for microwave heating

Gao

Rebrov

Verhoeven

et al. 2010

Journal of Applied Physics

View full text Add to dashboard Cite

Nanocrystalline Ni 0.5 Zn 0.5 Fe 2 O 4 thin films have been synthesized with various grain sizes by a sol-gel method on polycrystalline silicon substrates. The morphology, magnetic, and microwave absorption properties of the films calcined in the 673-1073 K range were studied with x-ray diffraction, scanning electron microscopy, x-ray photoelectron spectroscopy, atomic force microscopy, vibrating sample magnetometry, and evanescent microwave microscopy. All films were uniform without microcracks. Increasing the calcination temperature from 873 to 1073 K and time from 1 to 3 h resulted in an increase of the grain size from 12 to 27 nm. The saturation and remnant magnetization increased with increasing the grain size, while the coercivity demonstrated a maximum near a critical grain size of 21 nm due to the transition from monodomain to multidomain behavior. The complex permittivity of the Ni-Zn ferrite films was measured in the frequency range of 2-15 GHz. The heating behavior was studied in a multimode microwave cavity at 2.4 GHz. The highest microwave heating rate in the temperature range of 315-355 K was observed in the film close to the critical grain size.

show abstract

“…Therefore, it would be interesting to compare the rate of decrease in the magnetic hyperfine interaction of each sublattice and also investigate the effect of Zn ion on the structural deformations. The Ni-Zn ferrite has already been prepared by methods such as mechanochemical alloying [14], coprecipitation [15,16], hydrothermal [17][18][19], microwave [20], sol-gel [21][22][23][24], citrate precursor [25,26], nitrate-and reverse micelle [27]. However, these materials are sensitive, and their magnetic properties directly depend on the cation distribution and the particle sizes, which are affected by the method of preparation.…”

Section: Introductionmentioning

confidence: 99%

Mössbauer Spectroscopic Studies of NiZn Ferrite Prepared by the Sol-Gel Method

Niyaifar¹,

Mohammadpour²,

Rodriguez³

2015

Journal of Magnetics

View full text Add to dashboard Cite

This study was aimed to study the effect of Zn content on the hyperfine parameters and the structural variation of Ni 1-x Zn x Fe 2 O 4 for x = 0, 0.2, 0.4, 0.6, and 0.8. To achieve this, a sol-gel route was used for the preparation of samples and the obtained ferrites were investigated by X-ray diffraction, scanning electron microscopy, and Mössbauer spectroscopy. The formation of spinel phase without any impurity peak was identified by X-ray diffraction of all the samples. Moreover, the estimated crystallite size by X-ray line broadening indicates a decrease with increasing Zn content. This result was in agreement with the scanning electron microscopy result, indicating the reduction in grain growth with further zinc substitution. The room-temperature Mössbauer spectra show that the hyperfine fields at both the A and B sites decreased with increasing Zn content; however, the rate of reduction is not the same for different sites. Moreover, the best fit parameter showed that the quadrupole splitting values of B site increased from the pure nickel ferrite to the sample with x = 0.8.

show abstract

Effects on direct synthesis of large scale mono-disperse Ni0.5Zn0.5Fe2O4 nanosized particles

Cited by 30 publications

References 31 publications

Structure and magnetic properties of NixZn1−xFe2O4 nanoparticles prepared through co-precipitation method

Structure and magnetic properties of NixZn1−xFe2O4 nanoparticles prepared through co-precipitation method

Structural investigations and magnetic properties of sol-gel Ni0.5Zn0.5Fe2O4 thin films for microwave heating

Mössbauer Spectroscopic Studies of NiZn Ferrite Prepared by the Sol-Gel Method

Contact Info

Product

Resources

About