Thermoelectric Power of Gradient Fe&lt;sub&gt;x&lt;/sub&gt;(Al&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;3&lt;/sub&gt;)&lt;sub&gt;100-x&lt;/sub&gt; Composite Films

Stognei, O. V.; Al-Maliki, Ahmed; Sitnikov, A. V.; Makagonov, V. A.

doi:10.4028/www.scientific.net/ssp.233-234.694

SSP

2015

DOI: 10.4028/www.scientific.net/ssp.233-234.694

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Thermoelectric Power of Gradient Fex(Al2O3)100-x Composite Films

O. V. Stognei

Ahmed Al-Maliki

A. V. Sitnikov

et al.

Abstract: Nanocomposite Fex(Al2O3)100-x films with concentration gradient along the long axis of the samples (40 mm) have been obtained by sputter deposition technique and investigated. Based on the electric and magnetoresistive investigations the gradient Fex(Al2O3)100-x samples in which concentration of one edge of the sample is smaller than concentration of a percolation threshold while concentration of opposite edge of this sample is upper the threshold have been determined. Influence of the heat flow direction on t… Show more

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The synthesis and study of the electrical properties of composites (FeAl₂O₃) with paraffin wax and the determination of the mechanism of electrical conductivity

Almaliky¹,

Hussein²,

Badran³

2020

IOP Conf. Ser.: Mater. Sci. Eng.

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Thick films of composites of iron–aluminium oxide (FeAl2O3) were prepared by mixing paraffin wax with a powder of aluminium oxide (Al2O3) and iron granular (Fe) (600 μm in size). The current–voltage (I-V) characteristic was measured at different temperatures (293– 328 K). The electrical conductivity was also measured at those temperature levels. It was noted that an increase in temperature leads to an increase in electrical conductivity. The activation energies (Ea) were determined to be 0.357–0.125 ev; the electrical conductivity mechanism was identified as the Schottky and Poole–Frenkel effects.

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The synthesis and study of the electrical properties of composites (FeAl₂O₃) with paraffin wax and the determination of the mechanism of electrical conductivity

Almaliky¹,

Hussein²,

Badran³

2020

IOP Conf. Ser.: Mater. Sci. Eng.

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show abstract

Surface morphology and effect of particle sizes on the electrical conductivity of FeAl2O3 composite

Almaliky

2021

ETN

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A composite sample of FeAl2O3were synthesized by using mixture of paraffin wax and a powder of Al2O3 (0.07gm.) with iron granular Fe (0.01 gm.) of different particle sizes (63μm, 73μm, 212μm and 300μm). Where paraffin wax was melted using a temperature source (heater) with 328 K, then the granular volume of composite FeAl2O3 powder was added to paraffin wax by manual mixing until the mixture was homogeneous and then deposited on slices of aluminum in laboratory conditions. The Characteristics of (current- voltage) were measured to various particle sizes. The electrical conductivity was estimated as a function of various temperature range. The conductivity values of this composite doped of FeAl2O3 increasing with temperature increases. Also, the activation energies Ea for the composite samples have been found (4.1x10-4 –2.9x10-4) eV. Beside that the mechanisms of electrical conductivity were studied and identified in support of Schottky and Frankel effect mechanisms.

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Thermoelectric Power of Gradient Fe<sub>x</sub>(Al<sub>2</sub>O<sub>3</sub>)<sub>100-x</sub> Composite Films

Cited by 2 publications

References 2 publications

The synthesis and study of the electrical properties of composites (FeAl₂O₃) with paraffin wax and the determination of the mechanism of electrical conductivity

The synthesis and study of the electrical properties of composites (FeAl₂O₃) with paraffin wax and the determination of the mechanism of electrical conductivity

Surface morphology and effect of particle sizes on the electrical conductivity of FeAl2O3 composite

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Thermoelectric Power of Gradient Fe<sub>x</sub>(Al<sub>2</sub>O<sub>3</sub>)<sub>100-x</sub> Composite Films

Cited by 2 publications

References 2 publications

The synthesis and study of the electrical properties of composites (FeAl2O3) with paraffin wax and the determination of the mechanism of electrical conductivity

The synthesis and study of the electrical properties of composites (FeAl2O3) with paraffin wax and the determination of the mechanism of electrical conductivity

Surface morphology and effect of particle sizes on the electrical conductivity of FeAl2O3 composite

Contact Info

Product

Resources

About

The synthesis and study of the electrical properties of composites (FeAl₂O₃) with paraffin wax and the determination of the mechanism of electrical conductivity

The synthesis and study of the electrical properties of composites (FeAl₂O₃) with paraffin wax and the determination of the mechanism of electrical conductivity