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Preparation of Ferrimagnetics-Ferroelectrics Composites and Studying Their Microwave Characteristics at X-Band Region
Author(s) -
Tahseen H. Mubarak,
Bruska Azhdar,
Saib Thiab,
Samad Hussein
Publication year - 2017
Publication title -
diyala journal for pure science
Language(s) - English
Resource type - Journals
eISSN - 2518-9255
pISSN - 2222-8373
DOI - 10.24237/djps.1304.333d
Subject(s) - microwave , composite material , materials science , x band , telecommunications , engineering , optoelectronics
M-type barium hexaferrite (BaFe12O19) was prepared using sol-gel auto combustion method which represents substantial magnetic materials and utilized as microwave absorbers. In addition barium titanate powder was prepared using conventional ceramic method as ferroelectric material. XRD tests showed that the ferrite possess hexagonal structure and barium titanate has tetragonal structure. The constituents then mixed with different ratios and dissipated in the epoxy-resin as the sticky and fixed medium. Microwave absorbing characteristic studied within X-band region using VNA (Vector Network Analyzer). The complex permittivity and permeability were calculated using NicolsonRossWeir (NRW) method. Maximum reflection loss was -36.83dB at 9.125GHz observed for the samples A1:3 (ferrite: barium titanate) the ratio equal 1:3 due to good matching between the relative permeability and relative permittivity ,likewise the absorbing properties increases with the concentration of Barium hexaferrite in composite materials because it appeared absorption resonance frequency at 11.025 GHz.

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