Cation distribution and electromagnetic properties of spinel type Ni–Cd ferrites

Hakim, M. A.; Nath, Suman; Sikder, S. S.; Maria, Kazi Hanium

doi:10.1016/j.jpcs.2013.04.011

Cited by 73 publications

(16 citation statements)

References 32 publications

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“…by taking the mean ionic radii of both sites A and B (cations radii) from cations distribution where r A and r B are the mean ionic radii of sites A and B, respectively, and have been calculated from cation distribution [33,34], and R o is the ionic radii of oxygen, i.e., 1.32 Å . The value of r A and r B is also tabulated in Table 4.…”

Section: Theoretical Analysis For Cation Distributionmentioning

confidence: 99%

Variation in magnetic and structural properties of Co-doped Ni–Zn ferrite nanoparticles: a different aspect

Kumar

Singh

et al. 2016

J Sol-Gel Sci Technol

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Cobalt-substituted nickel-zinc ferrite nanoparticles (Ni 0.6-x Zn 0.4 Co x Fe 2 O 4 ) (x = 0, 0.0165, 0.033, 0.264 and 0.528) have been synthesized and characterized with respect to their structural and magnetic properties. Exceptionally in spite of the reported literature where the saturation magnetization increases with Co doping that attributes to Co 2? ions distribution in octahedral sites, the saturation magnetization in our samples decreases by increasing Co contents as revealed by vibrating sample magnetometer measurements. To know the structural properties such as phase identification, measurement of crystallite size and other structural parameters, prepared samples have been performed by X-ray diffraction technique. The X-ray diffraction spectra measurements show that samples have single-phase spinel cubic structure at x = 0, 0.033, 0.264 and 0.528, and at x = 0.0165, there is partial formation of hematite phase. The uncommonly decreased saturation magnetization, variation in retentivity, coercivity and magneto-crystalline anisotropy and also variation in structural properties with Co doping are explained on the basis of Co 2? ions distribution in tetrahedral and octahedral sites in place of Ni 2? and Zn 2? ions having different magnetic moments and different ionic radii, respectively. Using transmission electron microscopy, the particles size has been calculated. The morphology and stoichiometry of prepared samples have been investigated by field emission scanning electron microscopy and energy-dispersive X-ray spectroscopy techniques, respectively. The structural and magnetic measurement results are well co-related with each other with respect to Co 2? ions doping and its distributions. The moderate saturation magnetization and low coercivity values of all samples show soft magnetic behavior and attribute the usefulness of these materials in magnetic recording devices. Graphical Abstract

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Section: Theoretical Analysis For Cation Distributionmentioning

confidence: 99%

Variation in magnetic and structural properties of Co-doped Ni–Zn ferrite nanoparticles: a different aspect

Kumar

Singh

et al. 2016

J Sol-Gel Sci Technol

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“…According to the cation distribution of Cu-Zn ferrites, the ionic radius of the A site (r A ) and B site (r B ) can be theoretically calculated using the following relations [16,17]:…”

Section: Cation Distribution and Theoretical Lattice Parametermentioning

confidence: 99%

Structural phase transformation and hysteresis behavior of Cu-Zn ferrites

2013

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A series of Cu 1-x Zn x Fe 2 O 4 ferrite (with x = 0.0, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6) compositions were synthesized using the standard solid-state reaction technique. X-ray diffraction was used to study the structure of the above investigated samples. The theoretical and experimental lattice parameters (a th and a exp ) were calculated for each composition. A significant decrease in density and subsequent increase in porosity were observed with increasing Zn content. Curie temperature, T C , has been determined from the temperature dependence of permeability and found to decrease with increasing Zn content. The anomaly observed in the temperature dependence of permeability was attributed to the existence of two structural phases: cubic phase and tetragonal phase. Low-field hysteresis measurements have been performed using a B-H loop trace from which hysteresis parameters have been determined. Coercivity and hysteresis loss were estimated with different Zn contents.

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“…Another intense band is observed in the range from 1623 to 1632 cm À 1 , and corresponds to a stretching vibration of O-H in the fuel. Generally, the higher-frequency bands lying in the range from 550 to 620 cm À 1 and the lower-frequency bands lying in the range from 410 to 450 cm À 1 are characteristic of the AB 2 O 4 type of normal and inverse spinel transition metal oxides [40]. In this case, the long shoulder band (ν 1 ) at around 553-555 cm À 1 is ascribed to intrinsic vibrations of the tetrahedral complexes in the prepared samples.…”

Section: Ftir Analysismentioning

confidence: 91%

Combustion synthesis of Mg–Er ferrite nanoparticles: Cation distribution and structural, optical, and magnetic properties

Ramachandran

Vishista

2015

Materials Science in Semiconductor Processing

114

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Cation distribution and electromagnetic properties of spinel type Ni–Cd ferrites

Cited by 73 publications

References 32 publications

Variation in magnetic and structural properties of Co-doped Ni–Zn ferrite nanoparticles: a different aspect

Variation in magnetic and structural properties of Co-doped Ni–Zn ferrite nanoparticles: a different aspect

Structural phase transformation and hysteresis behavior of Cu-Zn ferrites

Combustion synthesis of Mg–Er ferrite nanoparticles: Cation distribution and structural, optical, and magnetic properties

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