Influence of sintering temperature on the structural, electrical and microwave properties of yttrium iron garnet (YIG)

Azis, Raba’ah Syahidah; Syazwan, M. M. Syafiq; Shahrani, Nuraine Mariana Mohd; Hapishah, A. N.; Nazlan, Rodziah; Idris, Fadzidah Mohd; Ismail, Ismayadi; Zulkimi, Muhammad Misbah Muhammad; Ibrahim, Idza Riati; Abbas, Zulkifly; Saiden, Norlaily Mohd

doi:10.1007/s10854-018-8850-5

Cited by 26 publications

(11 citation statements)

References 19 publications

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“…At the temperature of 800 • C a mixture of yttrium iron perovskite (YFeO 3 ) and α-Fe 2 O 3 was observed, while for samples further heated at the temperature of 1100 • C the only observed phase was Y 3 Fe 5 O 12 (Figure 2B). The obtained results agree with the literature reports approving that in the case of the mixture of Y 2 O 3 and Fe 2 O 3 the first reaction step is formation of perovskite structure YFeO 3 , and a further increase in temperature leads to further incorporation of iron leading to the formation of yttrium-iron garnet structure [30][31][32][33]. This effect was not observed for the powders synthesized by Method C and D as presented in Figure 1C,D).…”

Section: Resultssupporting

confidence: 91%

“…At the temperature of 800 °C a mixture of yttrium iron perovskite (YFeO3) and α-Fe2O3 was observed, while for samples further heated at the temperature of 1100 °C the only observed phase was Y3Fe5O12 (Figure 2B). The obtained results agree with the literature reports approving that in the case of the mixture of Y2O3 and Fe2O3 the first reaction step is formation of perovskite structure YFeO3, and a further increase in temperature leads to further incorporation of iron leading to the formation of yttrium-iron garnet structure [30][31][32][33]. An analysis of dilatometric curves (Figure 3A-D) concludes that in the case of the precursor of yttrium iron garnet obtained by Method A and Method B at temperature of 751.2 • C and 742.9 • C, respectively, which corresponds to the reaction of the YFeO 3 formation, we observe a faster change in the linear dimension of the sample.…”

Section: Resultssupporting

confidence: 91%

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Comparison of Precursor Preparation Routes on Final Density of Y3Fe5O12 Garnets Prepared via Reactive Sintering

et al. 2021

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Yttrium iron garnet was obtained using four methods of synthesis. A modified citrate method and a modified citrate method with YIG (yttrium iron garnet, Y3Fe5O12) nucleation were used. In two subsequent methods, YIP (yttrium iron perovskite, YFeO3) and α-Fe2O3 obtained in the first case by the citrate method and in the second by precipitation of precursors with an ammonia solution were used as the input precursors for reaction sintering. Differential scanning calorimetry (DSC) measurements of the output powders obtained by all methods allowed to identify the effects observed during the temperature increase. Dilatometric measurements allowed to determine the changes in linear dimensions at individual stages of reaction sintering. In the case of materials obtained by the citrate method, two effects occur with the increasing temperature, the first of which corresponds to the reaction of the formation of yttrium iron perovskite (YIP), and the second is responsible for the reaction of the garnet (YIG) formation. However, in the case of heat treatment of the mixture of YIP and α-Fe2O3, we observe only the effect responsible for the solid state reaction leading to the formation of yttrium iron garnet. The obtained materials were reaction sintered at temperatures of 1300 and 1400 °C. Only in the case of material obtained from a mixture of perovskite and iron(III) oxide obtained by ammonia precipitation at temperature of 1400 °C were densities achieved higher than 98% of the theoretical density. The use of Hot Isostatic Pressing (HIP) in the case of this material allowed to eliminate the remaining porosity and to obtain full density.

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Section: Resultssupporting

confidence: 91%

Section: Resultssupporting

confidence: 91%

Comparison of Precursor Preparation Routes on Final Density of Y3Fe5O12 Garnets Prepared via Reactive Sintering

et al. 2021

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“…The much higher absorption is expected to occur at a much higher frequency due to a higher anisotropy field of BaFe 12 O 19 . At X-band (8)(9)(10)(11)(12) frequency, the barium ferrite shows the dielectric and magnetic permeability properties with low attenuation ability [13]. 7.…”

Section: Fig 2x-ray Diffraction Pattern Of Bafe 12 O 19 At 800 900mentioning

confidence: 99%

Effect of Sintering Temperatures on Structural, Magnetic and Microwave Properties of Barium Ferrites/Epoxy Composites

2019

IJITEE

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This research highlights the structural magnetic and microwave properties of nanoparticles of M-type hexagonal barium ferrites (BaFe12O19). The samples were sintered at varied sintering temperatures (800, 900, and 1000 °C). The effect of temperatures on the structural, magnetic and microwave properties was highlighted. Barium ferrites are well-known materials used for radar absorbing materials (RAM). RAM materials with good absorbing performance should have high permeability, small permittivity and high magnetic or dielectric loss at microwave frequency. High microwave absorption can be created effectively in magnetic materials, as well as wideband absorption. The structural, microstructural and microwave properties were analyzed via an X-ray Diffractometer (XRD), a Field Emission Scanning Electron Microscope (FESEM) and a Vector Network Analyzer (VNA), respectively. The XRD results showed a full phase hexagonal structure was formed in the samples sintered at 900 and 1000 ºC. BaFe12O19 composite with a thickness of 3 mm showed a minimum Reflection Loss (RL) at −9.01 dB at a frequency of 9.16 GHz at temperature 1000 ºC.

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“…Therefore, prolonged the milling time used to get purified Fe3O4. [6,7,8,9]. The magnetite (Fe3O4) yielded from CTST was dried in oven at 120 o C for 24 h. The structural and phase composition of samples were analyzed from X-ray diffraction (XRD) pattern, characterized using a Philips Expert PW3040 diffractometer operated at 40 kV and 40 mA with CuKα radiation (λ = 0.154 nm).…”

Section: Introductionmentioning

confidence: 99%

Removal of Copper Ions from Aqueous Solution Using Waste Mill Scales

Asyikin

Azis

Sulaiman

et al. 2020

SSP

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The optimization of the Copper ions (Cu ions) adsorption from aqueous solution for inclusion in prolonged the milling time of the extracted iron oxides from waste mill scales has been investigated. Different milling times were used to reduce the size of the raw mill scale which are 24, 48 and 72 h. The three adsorbents were characterized using XRD, FESEM and VSM. Adsorbents that milled for 72 hours gave pure magnetite from the XRD results. FESEM images revealed that prolonged the milling time might reduced the particle sizes. Magnetic hysteresis revealed that all the samples having ferromagnetic behavior. Batch adsorption experiment had been carried out with the three adsorbents and as the results, adsorbents that milled with 72 hours shown highest removal of Cu ions with 95% removal efficiency.

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Influence of sintering temperature on the structural, electrical and microwave properties of yttrium iron garnet (YIG)

Cited by 26 publications

References 19 publications

Comparison of Precursor Preparation Routes on Final Density of Y3Fe5O12 Garnets Prepared via Reactive Sintering

Comparison of Precursor Preparation Routes on Final Density of Y3Fe5O12 Garnets Prepared via Reactive Sintering

Effect of Sintering Temperatures on Structural, Magnetic and Microwave Properties of Barium Ferrites/Epoxy Composites

Removal of Copper Ions from Aqueous Solution Using Waste Mill Scales

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