Metamaterial: Smart Magnetic Material for Microwave Absorbing Material

Adi, Wisnu Ari; Yunasfi, Yunasfi; Mashadi, Mashadi; Winatapura, Didin S.; Mulyawan, Ade; Sarwanto, Yosef; Gunanto, Yohanes Edi; Taryana, Yana

doi:10.5772/intechopen.84471

Cited by 14 publications

(5 citation statements)

References 24 publications

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“…One of the microwave absorbers based on magnetic materials is spinel ferrite [12]. Among the spinel ferrites are magnetite, nickel ferrite, and cobalt ferrite [13][14][15], known to have high Curie temperatures, greater permeability, and good temperature stability for magnetic saturation. In contrast, the dielectric properties are still relatively low because it is built through particle size and shape variations.…”

Section: Introductionmentioning

confidence: 99%

The Ability of ZnFe2O4 Nanostructure as Electromagnetic Wave Absorber in Frequency Range 2-18 GHz

Izaak

Gunanto

Sitompul

et al. 2023

KEM

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ZnFe2O4 nanomaterials were prepared using a solid-state reaction method using high energy milling (750 rpm) for 30 hours and calcined at 1000°C for 5 hours. The characterizations used include XRD, SEM, VSM, and VNA. The measurement results show that the sample has a single phase with a cubic structure. The surface morphology of heterogeneous samples with a particle size of 250-400 nm shows magnetic performance with Ms 2.38 emu/g and Hc 11.29 kOe. The sample also can absorb electromagnetic waves in the frequency range of 2-18 GHz with a minimum RL value of ~-18.79 dB at a frequency of 3.66 GHz, while RL ~-13.32 dB has a bandwidth of 0.9 GHz.

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Section: Introductionmentioning

confidence: 99%

The Ability of ZnFe2O4 Nanostructure as Electromagnetic Wave Absorber in Frequency Range 2-18 GHz

Izaak

Gunanto

Sitompul

et al. 2023

KEM

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“…The electronic device which working at high frequency is often has a problem on the emission of high frequency noise such as electromagnetic wave interference (EMI) [1][2]. To eliminate the EMI is required a magnetic material which able to resonate at a specific frequency that is expected to absorb electromagnetic radiation is undesirable.…”

Section: Introductionmentioning

confidence: 99%

“…However, as an absorber material of electromagnetic waves (microwave absorber) must have a coercivity value as low as possible so that the magnetic loss is low, but should still have a high value of the total magnetization. According to some literature it is mentioned that magnetic materials with the best absorption of microwaves, have a coercivity field of less than 1 kOe [1,3,4,[6][7][8][9][10][11][12]. As for the other properties necessary for electromagnetic wave absorbing material is a high permeability magnetic and resistive.…”

Section: Introductionmentioning

confidence: 99%

EFFECT OF Mn AND Ti ADDITION ON THE CRYSTALLOGRAPHIC STRUCTURE AND MAGNETIC PROPERTIES OF SrFe12O19

et al. 2020

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The synthesis and characterization of composition SrFe12-(x+y)MnxTiyO19 (x = y and x ≠ y) compound by using solid state reaction have been performed. The raw materials were SrCO3, Fe2O3, MnCO3, and TiO2. The mixed powder was compacted at 5000 psi into pellets and sintered at 1050°C in the air at atmosphere pressure for 15 hours and furnace cooling. The refinement results of x-ray diffraction pattern show that the doping composition (x = y) was a single phase while the doping composition (x ≠ y) was multi phase. We concluded that effect of substitution upon magnetic properties revealed that total magnetization, remanence and coercivity changed with substitution due to preferential site occupancy of substituted Mn2+ and Ti4+ ions. The coercivity decreases with increase in Mn and Ti concentration. This effect is related with Fe3+ magnetic moment changes after they have already substituted Mn2+ and Ti4+ ions. Since the coercivity and total magnetization may be controlled by substitution while maintaining resistive properties, making this material useful for microwave absorber.

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“…Radar sangat penting dalam sistem pertahanan negara [1]. Untuk menghindari deteksi Radar maka digunakan bahan penyerap gelombang mikro sebagai bahan pelapis atau pengecat peralatan dan fasilitas pertahanan seperti pesawat tempur, kapal perang, pakaian tentara dan lain-lain [2].…”

unclassified

“…Syarat utama yang diperlukan untuk membuat bahan penyerap gelombang adalah memiliki nilai permeabilitas (sifat rugi magnet) dan permitivitas (sifat rugi dielektrik) yang tinggi [2]. Bahan dengan permeabilitas relatif (𝜇 ) yang tinggi dapat diperoleh pada bahan ferromagnetik (100-6000), antiferromagnetik (1-100), paramagnetik (1) dan diamagnetik (0,9 atau mendekati 0).…”

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SINTESIS BAHAN PENYERAP GELOMBANG MIKRO Co0.75Ni0.25Ti(1-x)YxO3 MENGGUNAKAN METODE BALL MILL

SIREGAR,

SARAGI

2024

JME

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Telah berhasil disintesis bahan Co0,75Ni0,25Ti(1-x)YxO3 dengan komposisi (x = 0; 0,025; 0,05 dan 0,075) dengan menggunakan metode reaksi padatan sebagai penyerap gelombang mikro. Empat bahan dasar yang digunakan diantaranya Nikel (II) Oxide (NiO), Yitrium Oxide (Y2O3), Titanium (IV) oxide (TiO2) dan Cobalt oxide (Co3O4). Bahan di milling menggunakan HEM selama 5 jam, dioven selama 5 jam pada suhu dan disinter pada suhu selama 5 jam. Karakterisasi sampel dilakukan menggunakan X-Ray Diffraction untuk analisa fasa, Scanning Electron Microscope untuk pengamatan morfologi dan Vector Network Analyzer untuk mengetahui besarnya penyerapan gelombang. Hasil karakterisasi XRD menunjukkan bahwa sampel dengan komposisi x = 0 dan x = 0,025 memiliki fasa tunggal yaitu CoTiO3 sedangkan komposisi x = 0,05 dan x = 0,075 memiliki 3 fasa diantaranya CoTiO3, O7Ti2Y2 dan Co2O4Ti. Dari pengukuran SEM diperoleh morfologi partikel berbentuk bola dengan ukuran diameter partikel yang semakin mengecil seiring penambahan doping Yttrium. Dengan VNA, untuk C-band diperoleh nilai Reflection Loss -25,6 dB dengan persentase penyerapan sekitar 99,72% pada frekuensi 6 GHz (x = 0,05), dan pada X-band diperoleh nilai Reflection-Loss hingga -10,91 dB dengan persentase penyerapan sekitar 91,9% pada frekuensi 11,64 GHz (x = 0,075).Kata kunci: absorban, Metode ball-mill, Reflection Loss

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Metamaterial: Smart Magnetic Material for Microwave Absorbing Material

Cited by 14 publications

References 24 publications

The Ability of ZnFe<sub>2</sub>O<sub>4</sub> Nanostructure as Electromagnetic Wave Absorber in Frequency Range 2-18 GHz

The Ability of ZnFe<sub>2</sub>O<sub>4</sub> Nanostructure as Electromagnetic Wave Absorber in Frequency Range 2-18 GHz

EFFECT OF Mn AND Ti ADDITION ON THE CRYSTALLOGRAPHIC STRUCTURE AND MAGNETIC PROPERTIES OF SrFe12O19

SINTESIS BAHAN PENYERAP GELOMBANG MIKRO Co0.75Ni0.25Ti(1-x)YxO3 MENGGUNAKAN METODE BALL MILL

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