Dielectric properties of CdS-PVA nanocomposites prepared by ultrasound-assisted method

Azizian-Kalandaragh Y.

Optoelectronics and Advanced Materials, Rapid Communications, cilt.4, sa.11, ss.1655-1658, 2010 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 4 Sayı: 11
  • Basım Tarihi: 2010
  • Dergi Adı: Optoelectronics and Advanced Materials, Rapid Communications
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.1655-1658
  • Anahtar Kelimeler: CdS, Nanocomposite, Dielectric constant, Dielectric loss, Impedance Spectroscoy, OPTICAL-PROPERTIES, SIZE DEPENDENCE, FREQUENCY, FILMS
  • Gazi Üniversitesi Adresli: Hayır

Özet

The electric and dielectric properties of ultrasound-assisted synthesized CdS nanocrystals-PVA mixture were studied in temperature range of 298 K to 498 K and frequency range from 200 Hz to 1 MHz. Scanning Electron Microscopy (SEM) shows that the morphology of CdS nanoclusters are formed in the form of mostly spherical nanoparicles with average size 10 nm. It was found that the nature of polarization processes in pure PVA and CdS-PVA nanocomposites are different. This is due to interfacial polarization in nanocompisites.