刊名:Journal of Inorganic and Organometallic Polymers and Materials
出版年:2016
出版时间:January 2016
年:2016
卷:26
期:1
页码:190-196
全文大小:1,518 KB
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作者单位:A. Baykal (1) H. Erdemi (2) Md. Amir (1)
1. Department of Chemistry, Fatih University, Büyükçekmece, 34500, Istanbul, Turkey 2. Department of Polymer Engineering, Yalova University, 77100, Yalova, Turkey
This study reports the refflux synthesis and dielectrical characterization of caffeic acid coated magnetite (Fe3O4) nanoparticles. Rietveld refinement confirmed the single phase product formation with the average crystallite size of 11.4 nm by Scherrer Formula. The coating of caffeic acid on the surface Fe3O4 nanoparticles was monitored by Fourier transform infrared spectroscopy, the interaction being via bridging oxygens of the carboxylate and the nanoparticle surface. ac/dc conductivity and dielectric analyses of product revealed semiconductor characteristics varying with temperature. ac conductivity increases regularly with temperature and do not show frequency-dependent behavior particularly at lower frequency regime whereas it exhibits a significant temperature dependent behavior at medium frequencies and at higher temperatures. Keywords Fe3O4 Caffeic acid Conductivity Dielectric properties Spinel compounds