Hematite from Natural Iron Stones as Microwave Absorbing Material on X-Band Frequency Ranges

3rd International Conference on Functional Materials Science 2016

Zainuri, Mochamad^1

Departement of Physics, Faculty of Mathematics and Natural Sciences, Sepuluh Nopember Institute of Technology, Jl. Arief Rahman Hakim, Surabaya

60111, Indonesia^1

关键词: Conductivity measurements;    Coprecipitation method;    Frequency ranges;    Microwave absorbing materials;    Reflection loss;    Vector network analyzers;    Vibrating sample magnetometer;    X-band frequency range;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/196/1/012008/pdf
DOI  :  10.1088/1757-899X/196/1/012008

来源: IOP

【 摘 要 】

This study has been investigated the effect of hematite as microwave absorbing materials (RAM) on X-Band frequency ranges. Hematite was succesfully processed by coprecipitation method and calcined at 500 °C for 5 hour. It was synthesized from natural iron stones from Tanah Laut, South Kalimantan, Indonesia. The products were characterized by X-ray diffraxtion (XRD), conductivity measurement, Vibrating Sample Magnetometer (VSM), and Vector Network Analyzer (VNA). The result was shown that hematite has conductivity value on (2.5-3).10-7S/cm and be included as dielectric materials. The hysterisis curve was shown that hematite was a super paramagnetic materials. The product was mixed on paint with procentage 10% of total weight and coated on steel grade AH36 with spray methods. Then, the maximum of reflection loss on x - band's frequency range (8,2-12,4) GHz was -7 dB on frequency of 10.5 GHz. It mean that almost 50% electromagnetic energy was absorbed by hematite.