Giant negative magnetoresistance in a composite system based on Fe3O4 nanocrystals in a polymer matrix

Varfolomeev, A.A.; Godovskii, D. Yu.; Kapustin, G.A.; Волков, А. В.; Москвина, М. А.

doi:10.1134/1.567624

Cited by 11 publications

(10 citation statements)

References 7 publications

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“…As a result, the absorption of the electromagnetic waves occurs because of their losing energy. 14 –16 . In the PE + Fe 3 O 4 –based nanocomposites with nanoparticle content up to 60% in polymer matrix, pores are formed, which spoils the uniformity of polymer structure, and as a result, short wavelength electromagnetic waves travel easily through the nanocomposites, which decreases the adsorption.…”

Section: Resultsmentioning

confidence: 99%

Microwave absorption of polymer nanocomposites on the base high-density polyethylene and magnetite nanoparticles

Рамазанов

Hajiyeva

Maharramov

et al. 2018

Journal of Elastomers & Plastics

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In this article, we report about the synthesis of magnetic polymer nanocomposites comprising magnetite (Fe 3 O 4) nanoparticles in a polyethylene (PE) matrix. The structure and composition of nanocomposite materials using scanning electron microscopy and atomic force microscopy have been studied. It has been defined that the agglomeration of nanoparticles does not occur, by increasing the volume content of nanoparticles up to 60%, and Fe 3 O 4 nanoparticles act out like single-domain particles. It has also been revealed that nanocomposites based on PE þ Fe 3 O 4 with nanoparticle content in a polymer matrix up to 60% behave like superparamagnetic particles. It has also been revealed that the PE þ Fe 3 O 4-based nanocomposites effectively absorb the electromagnetic waves in the high frequency range of 0.1-30 GHz. It is shown that the properties of ultrahigh electromagnetic waves can be varied by varying the thickness of the nanocomposite films and the concentration of Fe 3 O 4 nanoparticles.

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Section: Resultsmentioning

confidence: 99%

Microwave absorption of polymer nanocomposites on the base high-density polyethylene and magnetite nanoparticles

Рамазанов

Hajiyeva

Maharramov

et al. 2018

Journal of Elastomers & Plastics

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“…Nanocomposites of magnetic particles in isolating polymer matrixes show tunnelling magnetoresistance (TMR), 44 and nanocomposites with a conductive polymer matrix exhibit giant magnetoresistance (GMR). 45 Iron-poly(p-xylylene) nanocomposites display a significant magnetoresistance (36%) at room temperature.…”

Section: Sensor Applications 43mentioning

confidence: 99%

Magnetic polymer nanocomposites

Millán

Palácio

2006

Polymer Nanocomposites

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“…Composite materials based on magnetic and/or conducting materials exhibit new or enhanced physical properties, of interest for future applications [1][2][3][4][5][6]. Polypropylene-graphite composites showed [2] a positive transverse magnetoresistance (larger than 10%) above the percolation threshold.…”

Section: Introductionmentioning

confidence: 99%

“…Polypropylene-graphite composites showed [2] a positive transverse magnetoresistance (larger than 10%) above the percolation threshold. Magnetoresistance of about 10% (in 1.0 T, with an applied voltage of 100 V) was reported [5] in polyvinyl alcohol-Fe 3 O 4 [5]. The doping of poly3-dodecylthiophene (conducting polymer) with FeCl 3 resulted in unusual diamagnetic properties [4], which suggested the presence of small superconducting regions at room temperature.…”

Section: Introductionmentioning

confidence: 99%