On nanocrystalline (1-x)NiFe2O4/ (x)BaTiO3 composites, multiband electromagnetic wave absorption has been studied. Using a high energy milling (HEM) tool, the samples were made by solid state reaction from powder raw materials of BaTiO3 (BTO) and NiFe2O4 (NFO) compounds. The BTO and NFO were then calcined and manually combined in the following weight percent ratios: 0:100, 34:66, 50:50, 60:40, and 100:0, referred to as K-1, K-2, K-3, K-4, and K-5, respectively. The five samples were then sintered after being pressed into pellets. The five composite samples were then characterised to see whether the phase of the synthesised materials had developed in the expected way. As a result, a qualitative study was carried out using the X-ray diffraction method and an X-ray Diffractometer (XRD). GSAS software was used to analyse X-ray diffraction results. The vibrating sample magnetometer (VSM) instrument was used to examine the material's magnetic properties. All of the samples' X-ray diffraction (XRD) patterns are single phase and impurity-free. A single cubic crystal structure of NFO with a space group of Fd-3m, No. 227, can be indexed to the sample K1. The sample K5, on the other hand, can be traced back to a single tetragonal BTO crystal structure with a space group of P4mm, No. 99. Although K2, K3, and K4 are composites made up of two phases, NFO and BTO, respectively. Soft magnetic output can be seen in all of the samples. The mass magnetization ranges from 20.0 to 49.0 emu/g. A vector network analyser was used to calculate the electromagnetic parameters of the composites in the frequency range of 2 GHz to 18 GHz. The results showed that (1-x) NiFe2O4 / (x) BaTiO3 composites absorb electromagnetic waves in three bands. The three-band reflection loss of the 0.5NiFe2O4 / 0.5BaTiO3 composite is greater than the other, and the three-band reflection loss is almost the same, i.e., below -15 dB. The 0.5NiFe2O4 / 0.5BaTiO3 composite is a strong candidate for electro-magnetic wave absorption, according to these experiments.
Author (s) Details
E. Sukirman
Centre for Science and Technology of Advance Materials-BATAN, Puspiptek,
Serpong 15314, Tangerang Selatan, Banten Province, Indonesia.
Y. Sarwanto
Centre for Science and Technology of Advance Materials-BATAN, Puspiptek,
Serpong 15314, Tangerang Selatan, Banten Province, Indonesia.
S. Ahda
Centre for Science and Technology of Advance Materials-BATAN, Puspiptek,
Serpong 15314, Tangerang Selatan, Banten Province, Indonesia.
Y. Taryana
Research Center for Electronics and Telecommunications-LIPI, Jl.
Sangkuriang, Bandung 40135, West Java Province, Indonesia.
Dr. S. Purwanto
Centre for Science and Technology of Advance Materials-BATAN, Puspiptek,
Serpong 15314, Tangerang Selatan, Banten Province, Indonesia.
View Book :- https://stm.bookpi.org/NUPSR-V2/issue/view/54
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