Influence of Cd2+ and Cr3+ substitutions on the magnetization and permeability of magnesium ferrites

Masti, Shivanand Appanna; Sharma, Anshu; Vasambekar, P. N.; Vaingankar, A. S.

doi:10.1016/j.jmmm.2006.01.229

Cited by 26 publications

(10 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The presence of canted moments in MgFe 2 O 4 has been reported in literature [28,29]. The finite size effect of the nanoparticles leads to a non-collinearity of magnetic moments on their surface, which in turn leads to spin disorder [26]. The spin disorder is more when the surface to volume ratio is large.…”

Section: Vsm Studymentioning

confidence: 80%

See 1 more Smart Citation

Sol–gel route of synthesis of nanoparticles of MgFe2O4 and XRD, FTIR and VSM study

Pradeep

Priyadharsini

Chandrasekaran

2008

Journal of Magnetism and Magnetic Materials

371

111

View full text Add to dashboard Cite

Section: Vsm Studymentioning

confidence: 80%

“…Masti et al [26] and Patil et al [27] have reported magnetic moment values as 1.07 and 1.02 m B for bulk particles of MgFe 2 O 4 . In our case we have obtained 0.8 m B .…”

Section: Vsm Studymentioning

confidence: 97%

Sol–gel route of synthesis of nanoparticles of MgFe2O4 and XRD, FTIR and VSM study

Pradeep

Priyadharsini

Chandrasekaran

2008

Journal of Magnetism and Magnetic Materials

371

111

View full text Add to dashboard Cite

“…The non-zero Y-K angle values indicate that the behavior of synthesized material cannot be explained on the basis of Néel's sub-lattice model. The Y-K angle is calculated using the standard relation [30] …”

Section: Bohr Magneton Y-k Angle and Curie Temperature Studiesmentioning

confidence: 99%

Effect of Dopants Mn2+ and Cd2+ Concentration on Electrical and Magnetic Properties of Li-Mixed Spinel Nanoferrites

Faraz

Ahmad

2011

J Supercond Nov Magn

View full text Add to dashboard Cite

Spinel mixed Li-ferrites with incorporation of various dopants (Cd 2+ and Ni 2+ ) concentration in ranges 0.00 ≤ x ≤ 0.80 are prepared using sol-gel technique. The various phases, lattice constant/parameter, X-ray density and crystallite size are confirmed using X-ray diffraction (XRD). The particle size and lattice parameters are found in the range 15-33 nm and 8.35-8.66 Å. This confirmed that incorporating dopant strongly influences the material structure and an increase is observed in lattice parameter and particle size with increase in dopant concentration. The structure is influenced by the dopant position, at the octahedral (B) and tetrahedral (A) sites. The decrease in activation energy (E) is observed with increase in dopant concentration. Furthermore, analysis of the crystallite size and morphology is done using scanning electron microscopy (SEM), which confirmed that the observed particle size is comparable with the X-ray diffraction (XRD) results. The dopant affects electrical properties such as dc electrical resistivity and drift mobility. The observed trend for drift mobility and dc electrical resistivity confirmed the semiconducting behavior of the synthesized material. The magnetic parameters saturation magnetization (M s ), remanence (M r ) and coercivity (H c ) are strongly affected by dopant concentration. A sudden increase in magnetic parameters M r and M s is observed A. Faraz ( ) Thermal Transport Laboratory (TTL), School of chemical and materials Engineering (by incorporating a small amount of dopant up to x = 0.40 and with further incorporation cause a decrease in the values of these parameters due to the non-magnetic behavior of incorporating dopant Cd 2+ ions. These decreases in values can be explained using the spin canted model and cations positioning at tetrahedral (A) and octahedral (B) sites. The decrease in Curie temperature, observed with increase in dopant incorporation, is due to the decrease/weakening interaction between tetrahedral (A) and octahedral (B) sites.

show abstract

“…As Chromium concentration increases, the particle size is decreasing and the surface area is increasing. The finite size effect of the nanoparticles leads to a noncollinearity of magnetic moments on their surface, which in turn causes spin disorder [28]. The spin disorder is more when the surface-to-volume ratio is large.…”

Section: M-h Loop Analysismentioning

confidence: 99%

An investigation of structural and magnetic properties of Cr–Zn ferrite nanoparticles prepared by a sol–gel process

Lakshmi¹,

Kumar

Thyagarajan

2015

J Nanostruct Chem

View full text Add to dashboard Cite

Cr x Zn Fe 2-x O 4 (with x = 0.0, 0.1, 0.2, 0.3, 0.4, and 0.5) spinel ferrite nanoparticles have been synthesized via sol-gel method. The precursor compound was calcined at a temperature of 900°C for 3 h. The aim of this study was to investigate the effect of Cr 3? ion substitution on the structural and magnetic properties of Cr-Zn ferrite. The size, shape, and chemical state of the synthesized powders were structurally characterized by powder XRD, SEM, TEM, HRTEM, SAED, energy-dispersive X-ray analysis (EDAX), and Fourier transform infrared spectroscopy (FTIR) spectral techniques. The XRD pattern of Cr-Zn ferrite provides information about single-phase formation of spinel structure with cubic symmetry. Both crystallite size and lattice parameter decrease with increasing Cr content. Formation of spinel structure is affirmed by using FTIR and FTIR spectra which shows that the bands t1 and t2 are found to shift gradually toward the higher frequency side with substitution of Cr, which have been attributed to the decrease in the lattice constant. SEM and TEM micrographs demonstrated that nanoparticles with narrow size distribution were obtained. The average grain size was found to be in nanometer range and of the order of 43-63 nm obtained using TEM images. Compositional stoichiometry was confirmed by EDAX technique. The magnetic properties of synthesized chromium-substituted Zn ferrite nanoparticles were studied using vibrating sample magnetometer at room temperature under the applied magnetic field of 15 KG. The result indicated that the amount of Cr contents significantly influenced the crystal morphology and structural and magnetic properties of Cr-doped Zn ferrite nanoparticles.

show abstract

Influence of Cd2+ and Cr3+ substitutions on the magnetization and permeability of magnesium ferrites

Cited by 26 publications

References 17 publications

Sol–gel route of synthesis of nanoparticles of MgFe2O4 and XRD, FTIR and VSM study

Sol–gel route of synthesis of nanoparticles of MgFe2O4 and XRD, FTIR and VSM study

Effect of Dopants Mn2+ and Cd2+ Concentration on Electrical and Magnetic Properties of Li-Mixed Spinel Nanoferrites

An investigation of structural and magnetic properties of Cr–Zn ferrite nanoparticles prepared by a sol–gel process

Contact Info

Product

Resources

About