Microwave Absorption Study of Manganese Ferrite in X-Band Range Prepared by Solid State Reaction Method

Abstract

A research to study the microwave absorption properties of manganase ferrite in the X-band range have been conducted by using high energy milling technique. The synthesis of manganase ferrite (Mn1+xFe2-xO4) was performed using solid state reaction method with the material composition (x)MnO : (2-x) Fe2O3 (x = 0.25; 0.50; 0.75 and 1.0) according to the molar ratio. This powder mixture was being milled for 10 hours then sintered at 1200 °C temperature for 3 hours. Material characterization was done by using FTIR spectroscopy (Fourier Transform Infra Red Spectroscopy) to observe the functional group, XRD (X-ray diffractometer) for phase identification, SEM (Scanning Electron Microscope) for surface morphology observation and VNA (Vector Network Analyzer) to determine the ability of materials to absorb microwaves. Analysis by FTIR showed two absorption peaks in the range of ~ 446 and ~ 557 cm-1 were associated with the octahedral and tetrahedral sites in structure of MnFe2O4. Phase identification by XRD showed that the increasing content of Mn (above x=0.25 composition) caused a single phase of MnFe2O4 turned into two phases (MnFe2O4 and Fe2O3), this results correspond to the SEM results which showed the morphological structure of those compositions are inhomogenous. The Absorption of microwaves was also decreased along with the increasing of Mn content. The maximum refflection loss was reached in the composition of Mn (x=0.0) which equal to ~ 82%, while for the composition of Mn (x=0.0) only reached ~ 55%.

Analisis Mikrostruktur Dan Sifat Magnetik Terhadap Pengaruh Suhu Sintering Pada Yttrium Iron Garnet Disintesis Menggunakan Metode Solgel

“…Material jenis ini memiliki karakteristik nilai permeabilitas dan permitivitas yang baik sehingga dapat berinteraksi dengan gelombang elektromagnetik yang kompleks. Bahan smart-magnetik ini biasanya terdiri dari gabungan unsur logam tanah jarang dan logam transisi yang menghasilkan sifat magnetik yang dapat berfungsi sebagai bahan penyerap gelombang elektromagnetik (Winatapura et al 2020;Nimbore et al, 2006;Fisli et al, 2019;Mashadi et al, 2018). Garnet merupakan salah satu kandidat bahan smart-magnetik yang memiliki potensi luas untuk dimanfaatkan dalam berbagai aplikasi di bidang teknologi seperti bahan penyerap gelombang elektromagnetik, bahan sensor, dll ( Winatapura et al, 2020) Yttrium Iron Garnet (YIG) atau dapat ditulis dengan Y 3 Fe 5 O 12 merupakan tipe material garnet yang paling banyak digunakan untuk berbagai aplikasi di bidang teknologi diantaranya sebagai bahan frekuensi tinggi dan bahan penyerap gelombang elektromagnetik.…”

Influence of Exfoliated Boron Nitride for Fabrication of a Lightweight Wideband Microwave Absorbing Material

“…Herein, we have used nickel ferrite as a soft magnetic material due to its high saturation magnetization good Snoek’s limit, high Curie temperature, optimum coercivity, excellent chemical stability and corrosion resistance, and easy-to-bulk synthesis. − In addition, since its discovery, the multiwalled carbon nanotube (MWCNT) has been a prominent contender for high-tech applications because of its excellent mechanical, electrical, and thermal properties . Numerous researchers have already used MWCNTs for development of improved microwave-absorbing materials due to their chemical stability, high thermal stability, outstanding electrical and mechanical properties, and so on.…”

Effect of manganese doping on the magnetic and magnetocaloric properties of zinc ferrite

“…MnZn ferrites attracted considerable investigations because of their potential applications in catalysis, magnetic storage, cancer therapy, medical imaging and electronic devices. [1][2][3][4][5] The chemical processes currently in vogue for the synthesis of MnZn ferrite particles include co-precipitation, [6][7][8][9] the sol-gel auto-combustion method, [10][11][12][13] the solid-state reaction method, [14][15][16] solvothermal technique, [17][18][19] microwave processing technique, [20][21][22] hydrothermal synthesis etc. [23][24][25][26][27] The solvothermal technique has the advantages of functioning at low temperatures, being a simple, lowcost synthetic process, exhibiting an ease of compositional control and producing ultrafine particles with a narrow-sized distribution.…”