SINTESIS BAHAN MAGNETIK ZnxFe(3-x)O4 DENGAN METODE  KO-PRESIPITASI SEBAGAI PENYERAP GELOMBANG MIKRO

Mashadi, Mashadi; Putri, Rika Andriyani; Sugeng, Bambang; Yunasfi, -

doi:10.29122/mipi.v13i2.3241

Cited by 2 publications

(2 citation statements)

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“…Overall, the increase in material absorption is accounted for by Fe addition, as demonstrated in Table 3, in which sample 1:2 has a high absorption due to more phases (Fe 2 O 3 ), eventually resulting in higher reflection loss. This occurs because Fe 2 O 3 has the antiferromagnetic property responsible for weaker magnet properties than single-phase composition [2]. Reflection loss indicates the absorption percentage.…”

Section: Vector Network Analyzer (Vna)mentioning

confidence: 99%

“…Microwave technology also becomes increasingly popular and has found its use in household, industry, communication, medical application, and military sectors, generating spontaneous electromagnetic emissions into the atmosphere [1]. Cellular phones that work at high frequency is responsible for frequency leak that decreases electronic device performance [2]. In this regard, microwave absorbers are expected to provide an effective solution to control microwave impacts [3].…”

Section: Introductionmentioning

confidence: 99%

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Synthesis of MnFe2O4 Nanoparticles as a Basic Material for Microwave Absorber

Rahmayanti¹,

Sudiati²

2022

J. Technomaterial Phys.

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This work aimed to synthesize MnFe2O4 nanoparticles using the coprecipitation method. Manganese chloride dihydrate (MnCl2.4H2O) and iron sand from South Cianjur, Indonesia, were used as a precursor for MnFe2O4 nanoparticle synthesis. The iron sand elements and compounds were tested using X-Ray Fluorescence (XRF). MnFe2O4 nanoparticle was characterized using X-Ray Diffraction (XRD), Scanning Electron Microscope-Energy Dispersive X-Ray (SEM-EDX), and Vector Network Analyzer (VNA). The X-Ray Fluorescence test result showed that 70.54% of South Cianjur contained iron sand. The SEM test result showed that the nanoparticles have an average size of 73.75 nm with a round shape, which was attributed to the agglomeration process. The EDX test result showed that the synthesized nanoparticle contained only Mn, Fe, and O elements without contaminants. The XRD test result showed that the crystal phase of MnFe2O4 was formed with a crystal size of less than 27 nm. The largest reflection losses in the 11.5 - 12.5 GHz range were found in MnFe2O4 with 1:2 variation, i.e., 35.08 dB. This study found that adding iron sand increases MnFe2O4 microwave absorption.

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Section: Vector Network Analyzer (Vna)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%