کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5491823 1525128 2017 24 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Structural, optical and dielectric properties of polyaniline-Nio.5 Zno.5Fe2O4 nano-composites
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
Structural, optical and dielectric properties of polyaniline-Nio.5 Zno.5Fe2O4 nano-composites
چکیده انگلیسی
Nio.5Zno.5Fe2O4 spinel ferrite was prepared by sol gel method. In situ polymerization method was used to synthesize polyaniline-Nio.5Zno.5Fe2O4 nano-composites having general formula (1-x)ferrite+(x)PANI where x = 0,0.3,0.5,1 (CP,CP1,CP2 and PANI). The effect of structural, optical and dielectric properties of the PANI- Nio.5Zno.5F2O4 nano-composites were investigated. XRD analysis confirmed that the Nio.5Zno.5Fe2O4 particles were successfully dispersed in the PANI matrix with single phase structure. The crystallite size of nano-composites increased with increasing spinel ferrite contents in the PANI matrix due to amorphous structure of PANI. Optical band gaps was calculated by using Tauc relation which found that optical band gradually decreases with the increasing amount of Nio.5Zno.5Fe2O4 in PANI. The dielectric constants (ε′,ε′′), dielectric loss (tanδ) and AC conductivity (Ϭac) were explained as a function of frequency (1 kHz to 1 MHz) which is described by Maxwell Wagner Model. The spinel ferrite-PANI composite are valuable as microwave absorbers because of their low cost, light weight and flexibility.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica B: Condensed Matter - Volume 521, 15 September 2017, Pages 355-360
نویسندگان
, ,