Scholarlink

<p>Polymer nanocomposite films composed of poly (ethylene oxide) combined with poly (vinyl alcohol) (PEO-PVA) blend and loaded with varying concentrations (0.2–0.8 wt%) of NiZnFe<sub>2</sub>O<sub>3</sub> nanoparticles were prepared and systematically characterized for their structural, thermal response, optical, and dielectric properties. Thermogravimetric analysis demonstrated significant changes in thermal response of the nanocomposites with increased ferrite content. X-ray diffraction illustrated the emergence of ferrite phase with increasing crystallite size from 13.9 to 19&#xa0;nm with increasing filler loading. Surface morphology examined via SEM revealed partial agglomeration at high concentration while EDS revealed no impurities. UV–Vis reflectance analysis showed notable shifts and slight bandgap narrowing to reach 1&#xa0;eV. Dielectric investigations revealed enhanced values of dielectric constant and reduced loss tangent, especially at high frequencies, upon ferrite incorporation. AC conductivity of 0.6 wt% NiZnFe<sub>2</sub>O<sub>3</sub> sample attained peak conductivity of 3.3 <InlineEquation ID="IEq1"> <EquationSource Format="TEX">\(\times\)</EquationSource> <EquationSource Format="MATHML"><math> <mo>×</mo> </math></EquationSource> </InlineEquation> 10<sup>–6</sup> S cm<sup>−1</sup>. The findings suggest that NiZnFe<sub>2</sub>O<sub>3</sub> addition tailors the dielectric behavior of PEO-PVA blend-based films without negatively affecting optical properties, rendering these films suitable for energy storage and low dielectric loss requiring applications.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Effect of NiZnFe2O3 doping on the optical and dielectric properties of PEO-PVA blend-based films for optoelectronics devices

  • 期刊论文

  • 发表日期：

    2026年2月19日

查看全文
  • Mashael M. Alharbi,
  • Walaa Alharbi,
  • M. A. El-Morsy,
  • A. A. Menazea

摘要

Polymer nanocomposite films composed of poly (ethylene oxide) combined with poly (vinyl alcohol) (PEO-PVA) blend and loaded with varying concentrations (0.2–0.8 wt%) of NiZnFe2O3 nanoparticles were prepared and systematically characterized for their structural, thermal response, optical, and dielectric properties. Thermogravimetric analysis demonstrated significant changes in thermal response of the nanocomposites with increased ferrite content. X-ray diffraction illustrated the emergence of ferrite phase with increasing crystallite size from 13.9 to 19 nm with increasing filler loading. Surface morphology examined via SEM revealed partial agglomeration at high concentration while EDS revealed no impurities. UV–Vis reflectance analysis showed notable shifts and slight bandgap narrowing to reach 1 eV. Dielectric investigations revealed enhanced values of dielectric constant and reduced loss tangent, especially at high frequencies, upon ferrite incorporation. AC conductivity of 0.6 wt% NiZnFe2O3 sample attained peak conductivity of 3.3 \(\times\) × 10–6 S cm−1. The findings suggest that NiZnFe2O3 addition tailors the dielectric behavior of PEO-PVA blend-based films without negatively affecting optical properties, rendering these films suitable for energy storage and low dielectric loss requiring applications.