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"7 S/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.
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机译：本研究已经研究了赤铁矿作为微波吸收材料（RAM）对X波段频率范围的影响。赤铁矿由共沉淀法成功加工，并在500℃下煅烧5小时。它是由Tanah Laut，印度尼西亚南荷兰丹南·兰特的天然铁石块合成。该产品的特征在于X射线衍射（XRD），电导率测量，振动样品磁力计（VSM）和矢量网络分析仪（VNA）。结果表明赤铁矿具有电导率值（2.5-3）。 10“7 S / cm并被包括为介电材料。显示血清型曲线，即赤铁矿是一种超级顺磁性材料。将该产物在涂料上混合在涂料上，通过喷射方法在钢级AH36上涂上10％。然后，X场频率范围内的反射损耗（8,2-12,4）GHz的最大值为-7 dB，频率为10.5 GHz。这意味着赤铁矿吸收了几乎50％的电磁能。
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