Yazar "Okutan, Mustafa" seçeneğine göre listele

Listeleniyor 1 - 3 / 3
  • Küçük Resim
    Öğe
    Conductivity mechanism of mica powders inlaid elastomer based materials
    (Elsevier Science Sa, 2016) Şentürk, Erdoğan; Akçakale, Nürettin; Okutan, Mustafa
    In this study, electrical properties of mica powder inlaid NR/SBR type elastomer based rubber material have been investigated by dielectric spectroscopy. Electrical modulus of this sample showed dispersion in the frequency range investigated, especially in the lower frequency region of the dispersion curve showing long distance conductivity for the charge carriers. DC conductivity curve exhibits that glass transition temperature is around 350 K. AC conductivity behavior supports the Correlated Barrier Hopping mechanism. (C) 2016 Elsevier B.V. All rights reserved.
  • Küçük Resim
    Öğe
    The investigation of glass spheres containing elastomer based materials for tunable device applications
    (Walter De Gruyter Gmbh, 2014) Şentürk, Erdoğan; Okutan, Mustafa; Demirer, Ahmet; Akçakale, Nurettin
    In this work, dielectric and tunability properties of glass spheres containing elastomer based materials have been investigated with dielectric spectroscopy as a function of frequency, composition and DC bias field. Real and imaginary part of dielectric constant and dielectric loss values of the gs1 (glass spheres), gs2, and gs3 were investigated in the frequency range of 100 to 40 x 10(6) Hz. Dielectric tunabilities of 69%, 87% and 33% were measured on gs1, gs2, and gs3 at 10 kHz and at room temperature. The degrees of anharmonic contributions to the polarization are very high for gs2 and gs3 as 4.53 x 10(-8) and 1.77 x 10(-8) (mm/kV)(2). Also, dielectric constant, FOM (%) and absorption coefficient alpha values were calculated at 10 x 10(3) Hz and 20 x 10(3) V/mm depending for different glass spheres.
  • Küçük Resim
    Öğe
    OLPT conductivity in Wolastonite inlaid NR/SBR type elastomer based material
    (Univ Chemistry & Technology, Prague, 2012) Şentürk, Erdoğan; Yüksel, T.; Okutan, Mustafa; Demirer, Ahmet; Akçakale, Nurettin
    The electrical properties of wollastonite inlaid NR/SBR type elastomer based material have been evaluated. Electrical properties of the samples were measured in the temperature range of 303 to 453 K and the frequency range of 100 Hz - 40 MHz. All electrically measured parameters were given anomalies at 385 K. Only one type of dielectric relaxation process have been observed for all measurements. Physical parameters characterizing the dielectric behavior have been obtained by fitting the experimental results in the modified Debye equation. The activation energy which is thermally activated by dielectric relaxation process have been calculated to be 0.58 eV. DC conductivity increasing by temperature has been explained with the help of VFT model whereas the AC one has been clarified by the OLPT model.