Tailoring magnetic and dielectric properties of rubber ferrite composites containing mixed ferrites

Anantharaman, M. R.; Malini, K. A.; Sindhu, S.; Mohammed, E. M.; Date, S. K.; Kulkarni, S.D.; Joy, P. A.; Kurian, Philip

doi:10.1007/bf02704011

Cited by 47 publications

(23 citation statements)

References 8 publications

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“…Rubber ferrite nanocomposites (RFCs) can play an important role here in realizing these microwave absorbers with additional functionalities like elasticity and mouldability aided by light weight [2,8,9]. Moreover, the dielectric and magnetic properties of the nanocomposites can be tailored by using the right amount of the filler in a single shot.…”

Section: Introductionmentioning

confidence: 99%

A flexible microwave absorber based on nickel ferrite nanocomposite

Sunny

Kurian

Mohanan

et al. 2010

Journal of Alloys and Compounds

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144

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Section: Introductionmentioning

confidence: 99%

A flexible microwave absorber based on nickel ferrite nanocomposite

Sunny

Kurian

Mohanan

et al. 2010

Journal of Alloys and Compounds

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144

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“…[1][2][3][4] Doping of transition metal salts into polymers in multiphase systems can induce pronounced changes in various properties of complexes and lead to the development of materials with tailored properties. [5][6][7][8][9][10] Polyvinylpyrrolidone (PVP) is a water-soluble and physiologically inert polyamide polymer. It has been attracting more and more attention because of its widespread application in the synthesis of nanostructures.…”

Section: Introductionmentioning

confidence: 99%

Magnetic and optical studies on polyvinylpyrrolidone thin films doped with rare earth metal salts

Basha

2010

Polym J

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A casting technique was used to prepare new nanocomposite thin films of pure and GdCl 3 -or HoCl 3 -doped polyvinylpyrrolidone (PVP). Transmission electron microscopy (TEM) was used to study the particle size and dispersibility in the investigated nanocomposites. Magnetic measurements, using a vibrating sample magnetometer (VSM), were carried out at room temperature and applied magnetic fields up to 10 kO e . The appearance of hysteresis loops with small values of saturation flux density (B s ), remanent flux density (B r ), squareness ratio (SQR) and coercive field (H c ), along with permeability (l) values relatively higher than 1, may be taken, as a matter of experimentation, to consider the investigated composites as soft magnet materials. In this study, PVP-HoCl 3 films showed slightly better magnetic properties compared with PVP-GdCl 3 films. A comparative analysis of infrared (IR) and ultraviolet-visible spectra of the parent components and their composites indicated the effective role of dopant nature and concentration in morphological and microstructural changes occurring in the PVP matrix. Optical constants, such as the energy gap (E g ) and the Urbach tail (E e ), were determined and discussed in terms of a model based on the electronic transition between localized states in the band structure.

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“…Therefore we decided to consider some nonlinear dependences for the dependence of a parameter on iron weight content. In the first attempt, we tried to apply a nonlinear weighting scheme similar to the general logarithmic equation considered by Anatharaman et al for dielectric constants in rubber ferrite composites [28]:…”

Section: The Jiles-atherton Modelmentioning

confidence: 99%

Magnetic Properties of SMC Cores Produced at a Low Compacting Temperature

et al. 2017

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Soft magnetic composites are readily used in the design of electromagnetic converters and electrical machines. In the paper, the magnetic properties of "home-made" cores made of iron powder and suspense polyvinyl chloride are examined. Samples were prepared by hot pressing of a PVC/Fe powder mixture with a different ratio of constituent components. Phase composition was investigated using an X-ray diffractometer and the presence of α-Fe was detected. Measurements of magnetic permeability revealed its allometric decrease with an increase of PVC content in composite. For the description of magnetization curves the phenomenological Jiles-Atherton model is used. The results of simulations are in a qualitative agreement with experiment.

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Tailoring magnetic and dielectric properties of rubber ferrite composites containing mixed ferrites

Cited by 47 publications

References 8 publications

A flexible microwave absorber based on nickel ferrite nanocomposite

A flexible microwave absorber based on nickel ferrite nanocomposite

Magnetic and optical studies on polyvinylpyrrolidone thin films doped with rare earth metal salts

Magnetic Properties of SMC Cores Produced at a Low Compacting Temperature

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