Electrophysical Properties of Polymeric Nanocomposites Based on Barium Ferrites Modified by Copper Iodide

The structural, magnetic and electrophysical properties of composites based on nanosized magnetite chemically modified of copper iodide and polychlortrifluoroethylene have been studied at temperatures 298 – 450 K and CuI concentrations of from 0 to 0,58 volume. It has been found the optimal volume content of copper iodide (~ 0.4) in the composites CuI/Fe3O4, when the interfacial interaction shows most intensively and maximum values electrical parameters take place. The value of the coercive force of nanocomposites CuI/Fe3O4 increases with increasing content copper iodide. It was shown that polymer composites containing CuI/Fe3O4, have higher values of real and imaginary components of complex permittivity and conductivity compared with a system that contains only copper iodide.

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Electrophysical Properties of Nanocomposites on the Basis of Polychlorotrifluoroethylene and Magnesium Oxide Modified with Copper Iodide

Фізика і хімія твердого тіла ◽

10.15330/pcss.17.4.482-486 ◽

2016 ◽

Vol 17 (4) ◽

pp. 482-486 ◽

Cited By ~ 1

Author(s):

R.V. Mazurenko ◽

P.P. Gorbik ◽

G.M. Gunya ◽

S.N. Makhno

Keyword(s):

Magnesium Oxide ◽

Electrophysical Properties ◽

Copper Iodide

Досліджено електрофізичні властивості в надвисокочастотному діапазоні та на низьких частотах композитів на основі хімічно модифікованого йодидом міді високодисперсного оксиду магнію та поліхлортрифторетилена в інтервалі температур 25 - 170оС і концентрацій CuI від 0 до 0,80 об’ємних часток. Встановлено оптимальний об’ємний вміст йодиду міді (~ 0,75) в композитах CuI/MgO, при якому міжфазна взаємодія проявляється найбільш інтенсивно, а електрофізичні параметри набувають максимальних значень. Показано, що полімерні композити, до складу яких входить CuI/MgO, мають вищі значення дійсної та уявної складових комплексної діелектричної проникності та електропровідності в порівнянні з системою, яка не містить модифіковані компоненти.

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INFLUENCE OF RAPID THERMAL TREATMENT OF INITIAL SILICON WAFERS ON THE ELECTROPHYSICAL PROPERTIES OF SILICON DIOXIDE OBTAINED BY PYROGENOUS OXIDATION

High Temperature Material Processes An International Quarterly of High-Technology Plasma Processes ◽

10.1615/hightempmatproc.2019031122 ◽

2019 ◽

Vol 23 (3) ◽

pp. 283-290

Author(s):

Vladimir A. Pilipenko ◽

Vitaly A. Solodukha ◽

Anatoly Zharin ◽

Oleg Gusev ◽

Roman Vorobey ◽

...

Keyword(s):

Thermal Treatment ◽

Silicon Dioxide ◽

Silicon Wafers ◽

Electrophysical Properties ◽

Initial Silicon

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Structural and Magnetic Hysteresis Properties of Co-Zr Substituted Hexagonal Barium Ferrites

JOURNAL OF ADVANCES IN PHYSICS ◽

10.24297/jap.v7i1.1739 ◽

2015 ◽

Vol 7 (1) ◽

pp. 1346-1351

Author(s):

Ch.Gopal Reddy ◽

Ch. Venkateshwarlu ◽

P. Vijaya Bhasker Reddy

Keyword(s):

Magnetic Properties ◽

Single Phase ◽

Magnetic Hysteresis ◽

Grain Morphology ◽

Hexagonal Structure ◽

Ion Composition ◽

X Ray Diffraction ◽

Ceramic Method ◽

Barium Ferrites ◽

Xrd Patterns

Co-Zr substituted M-type hexagonal barium ferrites, with chemical formula BaCoxZrxFe12-2xO19 (where x = 0.0, 0.2, 0.4, 0.6, 0.8 and 1.0), have been synthesized by double sintering ceramic method. The crystallographic properties, grain morphology and magnetic properties of these ferrites have been investigated by X-ray Diffraction (XRD), Scanning Electron Microscopy (SEM) and Vibrating Sample Magnetometer (VSM). The XRD patterns confirm the single phase with hexagonal structure of prepared ferrites. The magnetic properties have been investigated as a function of Co and Zr ion composition at an applied field in the range of 20 KOe. These studies indicate that the saturation magnetization (Ms) in the samples increases initially up to the Co-Zr composition of x=0.6 and decreases thereafter. On the other hand, the coercivity (Hc) and Remanent magnetization (Mr) are found to decrease continuously with increasing Co-Zr content. This property is most useful in permanent magnetic recording. The observed results are explained on the basis of site occupation of Co and Zr ions in the samples.

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