Magnetic properties of a partially inverted zinc ferrite synthesized by a new coprecipitation technique using urea

Kundu, Animesh; Upadhyay, Chandan; Verma, H. C.

doi:10.1016/s0375-9601(03)00509-7

Cited by 72 publications

(43 citation statements)

References 13 publications

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“…The main refractions from planes (220), (311), (400), (422), (511), and (440) with consistent with other works [1,4,9,10] . The analysis of XRD patterns indicated that the studied Mg-Zn ferrite ceramics have spinal cubic structures with single phase.…”

Section: Resultssupporting

confidence: 91%

The Preparation and Investigation of Magnetic Properties of Magnesium Zinc ferrites

Rittidech¹,

Sinthorn²,

Noisaguan³

2008

American J. of Applied Sciences

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Mg 0.7 Zn 0.3 Fe 2 O 4 (MZF) is a ferrites material, displaying interesting magnetic properties. It has a wide range of magnetic coils and electronic devices. In this research, MZF ceramics was prepared by solid state reaction route and interested on sintering temperature that have effective on phase formation of MZF, microstruce and magnetic properties. The phase identification of ceramic ferrites was performed using X-ray diffraction technique (XRD). It has been found that the dense of MZF ceramics were successfully obtained for sintering at 1300 o C. Moreover, the microstructure of MZF ceramics were examined by scanning electron microscopy (SEM) and showed that the sizes of grain from 0.65-19.87 µm. The highly dense of MZF ceramics were obtained the magnetic permeability medium (µ) as 14.38×10 -14 N/A 2 .

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Section: Resultssupporting

confidence: 91%

The Preparation and Investigation of Magnetic Properties of Magnesium Zinc ferrites

Rittidech¹,

Sinthorn²,

Noisaguan³

2008

American J. of Applied Sciences

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“…ZnFe 2 O 4 is one of the most important spinel ferrites which exhibits properties for application as soft magnets and low loss materials at high frequencies (Son et al 2002). Zinc ferrite (ZnFe 2 O 4 ) is of interest not only to basic research in magnetism, but also has great potential in technological applications, such as magnetic materials (Ehrhardt et al 2003;Bid and Pradhan 2003;Kundu et al 2003;Tanaka et al 1998;Grasset et al 2002;Deng et al 2005;Sousa et al 2001), gas sensors (Niu et al 2004), catalysts (Toledo-Antonio et al 2002), photocatalysts (Qiu et al 2004), and absorbent materials (Kobayashi et al 2002(Kobayashi et al , 2002Pineda et al 1997;Ikenaga et al 2004; Toḿ asAlonso and Latasa 2004), and is described by the formula (A)(B) 2 O 4 . Spinel ferrites possess a cubic structure, where (A) and (B) indicate tetrahedral and octahedral cation sites in a face-centered cubic anion (oxygen) sublattice, respectively.…”

Section: Introductionmentioning

confidence: 99%

Role of mode of heating on the synthesis of nanocrystalline zinc ferrite

Chaudhari¹,

Gaikwad

Acharya

2014

Appl Nanosci

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In the present work, microwave-assisted coprecipitation route was used for synthesis of nanocrystalline zinc ferrite and results were compared with conventionally prepared zinc ferrite. Synthesis conditions were kept uniform in both cases, except that the mode of heating was changed. The effects of mode of heating on the material properties were studied systematically. Microstructures of both samples were studied by scanning electron microscopy and transmission electron microscopy and the particle size was found to be in the range of 3-4 nm. Particle size distribution in microwaveprocessed MS-ZnFe 2 O 4 is found to be highly uniform compared to conventionally processed samples (CS-ZnFe 2 O 4 ). XRD data confirmed the presence of single-phase face-centered cubic structure for both the samples. The XRD data fitted well with Reitveld refinement. The functional groups were analyzed by FT-IR. Local distortions in the structures were studied by FT-Raman spectra of zinc ferrites at room temperature. This study concludes that the microwaveassisted synthesis route reduced the time of reaction by around 23 h and developed uniformly distributed fine-scaled particles. This method has high potential to synthesize other ferrite materials also.

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“…Iron (III) occupancy of both A and B-sites in nanocrystalline ZnFe 2 O 4 has been extensively proved by Mössbauer spectroscopy [1,2,6,7,8], nuclear magnetic resonance [5], neutron diffraction [3], x-ray absorption [9,10,11,12], and indirectly throughout magnetic measurements [2,3,4,13,14]. To a much lesser extend, Extended X-ray Absorption Fine Structure (EXAFS) studies at Zn K-edge suggest that Zn ions are transferred from its equilibrium position (sites A) to B-sites when the particle size decreases [9,10,11].…”

Section: Introductionmentioning

confidence: 99%

Cationic exchange in nanosizedZnFe2O4spinel revealed by experimental and simulated near-edge absorption structure

et al. 2007

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The non-equilibrium cation site occupancy in nanosized zinc ferrites (6-13 nm) with different degree of inversion (0.2 to 0.4) was investigated using Fe and Zn K-edge x-ray absorption spectroscopy XANES and EXAFS, and magnetic measurements. The very good agreement between experimental and ab-initio calculations on the Zn K-edge XANES region clearly show the large Zntransference that takes place in addition to the well-identified Fe 3+ [B]→Fe 3+ (A) one, without altering the long-range structural order. XANES spectra features as a function of the spinel inversion were shown to depend on the configuration of the ligand shells surrounding the absorbing atom. This XANES approach provides a direct way to sense cationic inversion in these spinel compounds. We also demonstrated that a mechanical crystallization takes place on nanocrystalline spinel that causes an increase of both grain and magnetic sizes and, simultaneously, generates a significant augment of the inversion.

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Magnetic properties of a partially inverted zinc ferrite synthesized by a new coprecipitation technique using urea

Cited by 72 publications

References 13 publications

The Preparation and Investigation of Magnetic Properties of Magnesium Zinc ferrites

The Preparation and Investigation of Magnetic Properties of Magnesium Zinc ferrites

Role of mode of heating on the synthesis of nanocrystalline zinc ferrite

Cationic exchange in nanosizedZnFe2O4spinel revealed by experimental and simulated near-edge absorption structure

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