Published April 15, 2019 | Version v1
Journal article Metadata-only

Lightweight broadband microwave absorbers of core–shell (polypyrrole/NiZn ferrite) nanocomposites in the X-band: insights on interfacial polarization

Creators

  • 1. Higher Institute for Applied Sciences and Technology, Department of Applied Physics (Syrian Arab Republic)
  • 2. Islamic Azad University, Department of Mechanical Engineering, Faculty of Engineering, Tehran North Branch (Iran, Islamic Republic of)

Description

Polypyrrole/Ni0.5Zn0.5Fe2O4 (PPy/NiZn ferrite) nanocomposites are prepared using the in-situ chemical oxidative polymerization method of pyrrole in the presence of the ferrite. The composites are characterized using scanning and transmission electron microscopies, vibrating sample magnetometry, thermal gravimetric analysis, X-ray diffractometry, Fourier transform infrared spectroscopy and UV–visible spectroscopy. The microwave absorption characteristics are performed by measuring the reflection loss in the X-band. The results indicate the presence of a maximum reflection loss of − 30.0 dB at 10.9 GHz with a matching thickness of 3.0 mm and a bandwidth of 3.6 GHz for a weight ratio PPy/NiZn ferrite of 2:1 and a loading not exceeding 7.5% w/w of nanocomposite in a host matrix of paraffin wax. The surface density of the absorber is only 2.74 kg/m2. The role of interfacial polarization in promoting microwave absorption characteristics is also highlighted.

Additional details

Identifiers

DOI
10.1007/s10854-019-01002-y;

Publishing Information

Journal Title
Journal of Materials Science. Materials in Electronics
Journal Volume
30
Journal Issue
7
Journal Page Range
p. 6876-6887
ISSN
0957-4522
CODEN
JSMEEV

INIS

Country of Publication
United Kingdom
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
52019446
Subject category
S77: NANOSCIENCE AND NANOTECHNOLOGY; S36: MATERIALS SCIENCE;
Descriptors DEI
FERRITES; FOURIER TRANSFORM SPECTROMETERS; NANOCOMPOSITES; ORGANIC POLYMERS; POLARIZATION; PYRROLES; THERMAL GRAVIMETRIC ANALYSIS; TRANSMISSION ELECTRON MICROSCOPY; X-RAY DIFFRACTION
Descriptors DEC
AZOLES; CHEMICAL ANALYSIS; COHERENT SCATTERING; DIFFRACTION; ELECTRON MICROSCOPY; FERRIMAGNETIC MATERIALS; GRAVIMETRIC ANALYSIS; HETEROCYCLIC COMPOUNDS; IRON COMPOUNDS; MAGNETIC MATERIALS; MATERIALS; MEASURING INSTRUMENTS; MICROSCOPY; NANOMATERIALS; ORGANIC COMPOUNDS; ORGANIC NITROGEN COMPOUNDS; OXYGEN COMPOUNDS; POLYMERS; QUANTITATIVE CHEMICAL ANALYSIS; SCATTERING; SPECTROMETERS; THERMAL ANALYSIS; TRANSITION ELEMENT COMPOUNDS

Optional Information

Copyright
Copyright (c) 2019 Springer Science+Business Media, LLC, part of Springer Nature