Study of structure and magnetic properties of Ni–Zn ferrite nano-particles synthesized via co-precipitation and reverse micro-emulsion technique

Dar, M. Abdullah; Shah, Jyoti; Siddiqui, Waseem Ahmad; Kotnala, R.K.

doi:10.1007/s13204-013-0241-x

Cited by 60 publications

(5 citation statements)

References 22 publications

(21 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…where (d) is inter-planar spacing; (h k l) is Miller Indices. The lattice constant is increasing gradually with Cu content due to the larger ionic radius of the Cu 2+ (0.70 Å) than that of the Mg 2+ (0.65 Å) as shown in Figure 2 and agrees with previous literature (22) . The crystallite size of the synthesized Cu doped Mg-Zn ferrite powders was evaluated with the help of Debye-Scherrer's relation (23) ,…”

Section: X-ray Diffraction Studiessupporting

confidence: 91%

Effect of Cu2+ substitution on structure, morphology, and magnetic properties of Mg-Zn spinel ferrite

Komali¹,

Murali²,

Parajuli³

et al. 2021

IJST

View full text Add to dashboard Cite

Objective: To prepare Cu doped Mg 0.5−x Cu x Zn 0.5 Fe 2 O 4 (x = 0.0, 0.05, 0.1, 0.15, 0.2 and 0.25) spinel ferrites materials and study the structure, morphology, and magnetic properties. Methods: Cu doped Mg-Zn spinel ferrites are magnetic and highly resistive materials. They were synthesized by the method of solid-state reaction and characterized by x-ray diffraction (XRD), field effect scanning electron microscopy (FESEM), Fourier transform infrared (FTIR), and vibrating sample magnetometer (VSM) for their structural, compositional, morphological, functional properties. They are with spinel structure under Fd-3m space group. Their crystallite size was 44.58 nm to 31.02 nm range after calcined at 1000 o C. Their spinel structure was confirmed with FT-IR analysis, whose absorption bands were 598.84 -580.40 cm -1 and 405.35 -402.15 cm -1 range for higher and lower frequency, respectively. The value of coercivity is in the range 146.33 -9.427 Oe with the variation of content. The lower values of the coercivity indicated the soft ferrimagnetic nature of the synthesized materials. Findings/ Application: Substitution of non-magnetic Cu 2+ ions strongly influenced the structural and magnetic properties of magnesium ferrites.

show abstract

Section: X-ray Diffraction Studiessupporting

confidence: 91%

Effect of Cu2+ substitution on structure, morphology, and magnetic properties of Mg-Zn spinel ferrite

Komali¹,

Murali²,

Parajuli³

et al. 2021

IJST

View full text Add to dashboard Cite

show abstract

“…As for the low value of H c at room temperature, it is attributed to the interactions between NPs having extremely small sizes. [ 37 ] This decrease in H c resulting from the lower anisotropy, and the significant drop of H c above the T B , shows the highly SPM characteristics of the nanosized Ni via the PDCs route in the fabrication. It is well known that SPM is present in the nanosized Ni particles less than 20 nm at room temperature and our measurements are in agreement with this view, without showing a slowdown in the relaxation of the magnetic domains.…”

Section: Resultsmentioning

confidence: 99%

The Role of Carbon Content: A Comparison of the Nickel Particle Size and Magnetic Property of Nickel/Polysiloxane‐Derived Silicon Oxycarbide

et al. 2023

View full text Add to dashboard Cite

A facile and novel processable method to synthesize the Ni nanoparticles (Ni NPs) by tailoring their size in the matrix of the silicon oxycarbide (SiOC) ceramic system is reported. This method is based on polymer‐derived ceramics (PDCs), instead of the conventional powder route. The specific structural characteristics and magnetic properties of the various Ni NPs/SiOC composites as a function of carbon content are systematically investigated. The magnetic properties are experimentally investigated as a function of NP size and measurement temperature. It is demonstrated that the change in the size of Ni NPs (average from ≈4 to ≈ 19 nm) determines the magnetic nature of superparamagnetism. Zero‐field‐cooled (ZFC) and field‐cooled (FC) magnetization studies under magnetic fields of 100 Oe are performed. The saturated M versus H (M–H) loops (saturation magnetization) increase and the coercivity decreases with the size reduction of Ni NPs. It is an indicator of the presence of superparamagnetic behavior and single‐domain NP for ceramic materials.

show abstract

“…The field cooled (FC) procedure differed from the zero field cooled (ZFC) measurements only in that the sample was cooled in a nonzero magnetic field. [ 51 ]…”

Section: Resultsmentioning

confidence: 99%

Structural, Magnetic, and Optical Studies of Ni–Mg Ferrites Synthesized by Polyol Method

Dhanyaprabha

Jacob

Mohan

et al. 2021

Physica Status Solidi (a)

View full text Add to dashboard Cite

Magnesium and nickel‐substituted ferrites belong to an important class of spinel ferrites with wide variety of applications. Herein, preparation and characterization of pure, single‐phase Ni–Mg ferrites using a cost‐effective method, which yield high‐quality nanosized particles with good chemical homogeneity, are reported. A series of NixMg(1−x)Fe2O4 nanocrystalline powders (x = 1,0.75,0.5,0.25,0) is prepared using polyol method and a detailed investigation on the effect of dopant substitution on microstructural magnetic as well as optical properties is conducted. The as‐prepared samples are subsequently characterized using X‐ray diffractometer (XRD), X‐ray photoelectron spectroscopy (XPS), Fourier‐transform infrared spectroscopy (FTIR), Field‐emission scanning electron microscope (FESEM), Brunauer, Emmett, and Teller (BET), Mossbauer spectroscopy, Vibrating sample magnetometer (VSM), and UV–visible diffuse reflectance spectroscopy. Rietveld refinement confirms the single‐phase cubic structure with Fd‐3m (227) space group of NixMg(1−x)Fe2O4 series. The cation distribution can be represented as [Mg(1−x−y)Fe(δ)]A[Mg(x)Ni(y)Fe(2−δ)]BO4. FTIR bands at the finger print region of ferrites and Mossbauer analysis confirms the proposed cation distribution from Rietveld refinement. The magnetic nature is confirmed from Mossbauer and VSM analysis. In VSM, the saturation magnetization of the samples exhibits an increasing trend with nickel substitution. The optical studies of the series NixMg(1−x)Fe2O4 are conducted by UV–visible diffuse reflectance spectroscopy.

show abstract

Study of structure and magnetic properties of Ni–Zn ferrite nano-particles synthesized via co-precipitation and reverse micro-emulsion technique

Cited by 60 publications

References 22 publications

Effect of Cu2+ substitution on structure, morphology, and magnetic properties of Mg-Zn spinel ferrite

Effect of Cu2+ substitution on structure, morphology, and magnetic properties of Mg-Zn spinel ferrite

The Role of Carbon Content: A Comparison of the Nickel Particle Size and Magnetic Property of Nickel/Polysiloxane‐Derived Silicon Oxycarbide

Structural, Magnetic, and Optical Studies of Ni–Mg Ferrites Synthesized by Polyol Method

Contact Info

Product

Resources

About