Journal
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
Volume 443, Issue -, Pages 244-251Publisher
ELSEVIER
DOI: 10.1016/j.jmmm.2017.07.083
Keywords
Microwave absorber; Magnetic; Composite; Complex permittivity; Complex permeability; Reflection loss
Funding
- UGC-BSR, India section, New Delhi
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Cobalt doped M-type strontium hexaferrite nanoparticles (SrCoxFe(12-x)O(19), x = 0.2-1.2) is synthesized and used as inclusions in Linear Low Density Polyethylene (LLDPE) matrix for developing nano-composites with 60 wt% of these nanoparticles. Absorption performance of the developed nano-composites is evaluated in the X-band. The thickness optimization is carried out for obtaining maximum reflection loss by using the transmission line model (TLM), with measured values of permittivity and permeability of the composite. The best reflection loss is observed experimentally for x = 0.8 with an absorber thickness of 3 mm for which a wide - 10 dB bandwidth covering almost the entire X-band is obtained. The composites are light weight and not affected by exposure to water. (C) 2017 Elsevier B.V. All rights reserved.
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