Effect of BiFeO3 nanoparticle on electrical, thermal and magnetic properties of polyvinyl alcohol (PVA) composite film

Halder, Monalisa; Das, Amit Kumar; Meikap, Ajit Kumar

doi:10.1016/j.materresbull.2018.01.036

Cited by 23 publications

(5 citation statements)

References 54 publications

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“…Composites often exhibit unexpected behaviors and have properties that differ significantly from those of their components [35][36][37]. The addition of various additives to PVA (from metallic, ceramic, or organic nanoparticles) leads to a significant change in the optical [25,28], electrical [22], sorption [38], and thermal [39][40][41] properties compared to pure PVA. The fillers in PVA can also improve composites' mechanical properties, hardness, elasticity, tensile strength, and adhesion characteristics [42][43][44][45][46][47][48].…”

Section: Introductionmentioning

confidence: 99%

Combined Effect of Microstructure, Surface Energy, and Adhesion Force on the Friction of PVA/Ferrite Spinel Nanocomposites

Darwish

Zubar

Kanafyev³

et al. 2022

Nanomaterials

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Nanocomposite films based on spinel ferrite (Mg0.8Zn0.2Fe1.5Al0.5O4) in a PVA matrix were obtained. An increase in the spinel concentration to 10 wt.% caused an avalanche-like rise in roughness due to the formation of nanoparticle agglomerates. The lateral mode of atomic force microscopy (AFM) allowed us to trace the agglomeration dynamics. An unexpected result was that the composite with 6 wt.% of filler had a low friction coefficient in comparison with similar composites due to the successfully combined effects of low roughness and surface energy. The friction coefficient decreased to 0.07 when the friction coefficient of pure PVA was 0.72. A specially developed method for measuring nano-objects’ surface energy using AFM made it possible to explain the anomalous nature of the change in tribological characteristics.

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Section: Introductionmentioning

confidence: 99%

Combined Effect of Microstructure, Surface Energy, and Adhesion Force on the Friction of PVA/Ferrite Spinel Nanocomposites

Darwish

Zubar

Kanafyev³

et al. 2022

Nanomaterials

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“…For ideal Schottky diode n = 1, but in practical case n is always greater than 1. The barrier inhomogeneity of SBD interface causes the high value of n [42]. Richardson plot of ln I S T 2 versus q ∕ k B T is shown in the inset of Fig.…”

Section: (14)mentioning

confidence: 96%

Dielectric relaxation and magnetodielectric response of mesoporous terbium manganate nanopaticles

Halder

Meikap

2020

SN Appl. Sci.

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We report here the investigation on dielectric response, charge transport mechanism and magnetocapacitance of mesoporous perovskite Terbium Manganate (TMO) nanoparticles. TMO NPs possess relatively high specific surface area (20.9 m 2 g −1) than that of general perovskite-type metal oxides. To study the dielectric/magnetodielectric response in TMO material, a capacitive system is fabricated. Impedence spectroscopy shows electrically heterogeneous nature of the material. Due to the existence of inhomogeneity at electrode-TMO interface, ideality factor is larger than unity. Various Schottky diode electrical parameters are obtained here from temperature dependent capacitance-voltage (C-V) measurements. The function of Au/TMO/Au Schottky diode system is well explained from current-voltage (I-V) characteristics study. Ferroelectric-like hysteretic behaviour is observed at and above room temperature from non-ferroelectric TMO. Presence of defect states at TMO interface layer dominates the charge conduction phenomenon. Negative magnetodielectric effect arises in heterogeneous TMO sample due to the effect of magnetic field on Maxwell-Wagner space charge at the interface.

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“…There is also another peak around 410 nm which is the characterization peak of β carotene which is an antioxidant that converts to vitamin A. There is another small peak around 664 nm which is due the presence of chlorophyll [6][7][8][9][10][11]. For the UV spectra of activated carbon, there is only one peak is visible which is at λ=270 nm.…”

Section: A Uv-visible Analysismentioning

confidence: 99%

Fabrication of Flexible Energy Storage Dielectric Material from Bio-Wastage

2022

AJAC

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Fossil fuels are a leading source of global warming pollution. Even the waste products are hazardous to public health and the environment. Considering the business cost and environmental concerns, the technology of 'Bio-waste-to-Energy' is recognized as an increasingly important renewable source of energy. Here we have produced potassium hydroxide (KOH) activated microporous carbon from tea wastage. We have fabricated flexible Polyvinyl alcohol (PVA: easily processable, cheap and eco-friendly polymer) based films using Activated Carbon (AC) as nanofiller with different weight percentage. Conductivity observation of the sample was done to study their prospect as the dielectric materials in energy storage, microwave absorption applications. Depending upon the results, we can apply the Activated Carbon (AC) based polyvinyl alcohol (PVA) dielectric film to make flexible, environmental friendly energy/storage devices, microwave absorbents.

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Effect of BiFeO3 nanoparticle on electrical, thermal and magnetic properties of polyvinyl alcohol (PVA) composite film

Cited by 23 publications

References 54 publications

Combined Effect of Microstructure, Surface Energy, and Adhesion Force on the Friction of PVA/Ferrite Spinel Nanocomposites

Combined Effect of Microstructure, Surface Energy, and Adhesion Force on the Friction of PVA/Ferrite Spinel Nanocomposites

Dielectric relaxation and magnetodielectric response of mesoporous terbium manganate nanopaticles

Fabrication of Flexible Energy Storage Dielectric Material from Bio-Wastage

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