Triethylene glycol stabilized MnFe2O4 nanoparticle Synthesis magnetic and electrical characterization
Yazarlar (5)
M. Günay
Fatih Üniversitesi, Türkiye
Prof. Dr. Hamit ERDEMİ Yalova Üniversitesi, Türkiye
A. Baykal
Fatih Üniversitesi, Türkiye
H. Sözeri
Tübitak Ulusal Metroloji Enstitüsü, Türkiye
M. S. Toprak
The Royal Institute of Technology (Kth), İsveç
Makale Türü Özgün Makale (SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale)
Dergi Adı Materials Research Bulletin (Q2)
Dergi ISSN 0025-5408 Dergi Bilgileri (2013)
Dergi Tarandığı Indeksler SCI-Expanded
Makale Dili İngilizce Basım Tarihi 03-2013
Kabul Tarihi – Yayınlanma Tarihi 01-03-2013
Cilt / Sayı / Sayfa 48 / 3 / 1057–1064 DOI 10.1016/j.materresbull.2012.11.097
Makale Linki http://linkinghub.elsevier.com/retrieve/pii/S0025540812009397
UAK Araştırma Alanları
Polimer Bilimi
Özet
In this study, triethylene glycol (TEG) stabilized superparamagnetic MnFe2O4 nanoparticle (TEG@MnFe2O4) was synthesized via a simple polyol route. Composition of nanoparticle was confirmed as MnFe2O4 and surface conjugation of TEG was confirmed by Fourier transform infrared spectroscopy to be via oxygens on TEG covalently attached to metal centers on the NPs. Vibrating sample magnetometer measurements confirmed the superparamagnetic character of these nanoparticles without reaching to a saturation, and has no coercivity. The TEG@MnFe 2O4 nanocomposite showed thermally activated conductivity, significant interfacial polarization effect also in the dielectric permittivity evaluations. Temperature dependency of conductivity is a strong evidence for thermally activated polarization mechanism. dc conductivity is classified into two regions over a limited temperature range and shows maximum conductivity of about 4 × 10-7 S cm-1 at 120°C. Temperature and frequency dependence of dielectric permittivity indicated interfacial polarization and temperature-assisted-reorganization effects. © 2012 Elsevier Ltd. All rights reserved.
Anahtar Kelimeler
A. Magnetic materials | A. Nanostructures | B. Chemical synthesis | C. X-ray diffraction | D. Dielectric properties | D. Magnetic properties