Effect of specific surface area of raw material Fe2O3 on magnetic properties of YIG

Huang, Ching-Chien; Zuo, Wei Zong; Hung, Yung-Hsiung; Huang, Jing; Kuo, Ming Feng; Cheng, Chun Hu

doi:10.1016/j.jmmm.2017.10.033

Cited by 8 publications

(4 citation statements)

References 9 publications

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“…Finally, for x = 2.5, the specific magnetization falls down to 1 emu/g. This is when we obtained a mixture of yttrium orthoferrite (89 wt.%), neodymium orthoferrite (1 wt.%), and iron (III) oxide (10 wt.%), which showed the magnetic behavior corresponding to the mixture of oxides without formation of a solid solution (0 ≤ x ≤ 2.0) [29,30,31]. …”

Section: Resultsmentioning

confidence: 99%

Enhancement in Curie Temperature of Yttrium Iron Garnet by Doping with Neodymium

et al. 2018

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The effect of the substitution of Y3+ by Nd3+ on the structural and magnetic properties of neodymium-doped yttrium iron garnet, NdxY3−xFe5O12 with x in the range of 0–2.5, is presented. Oxide powders of Fe2O3, Nd2O3, and Y2O3 were mixed in a stoichiometric ratio and milled for 5 h using high-energy ball milling, before being uniaxially pressed at 900 MPa and annealed at 1373 K for 2 h to obtain NdxY3−xFe5O12 (0 ≤ x ≤ 2.5). It was found that the mechanical milling of oxides followed by annealing promotes the complete structural formation of the garnet structure. Additionally, the X-ray diffraction patterns confirm the complete introduction of Nd3+ into the garnet structure with a neodymium doping concentration (x) of 0–2.0, which causes a consistent increment in the lattice parameters with the Nd3+ content. When x is higher than 2.0, the yttrium orthoferrite is the predominant phase. Besides, the magnetic results reveal an increase in the Curie temperature (583 K) as the amount of Nd3+ increases, while there was enhanced saturation magnetization as well as modified remanence and coercivity with respect to non-doped YIG.

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Section: Resultsmentioning

confidence: 99%

Enhancement in Curie Temperature of Yttrium Iron Garnet by Doping with Neodymium

et al. 2018

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“…Yttrium Iron Garnet (Y 3 Fe 5 O 12 , YIG), and its derived rare-earth-doped compounds have attracted much attention for their excellent thermal, mechanical, electromagnetic, magnetic, and magneto-optical properties [1][2][3]. These properties; including high thermal conductivity, damage resistance, high electric resistivity, low dielectric loss, narrow ferromagnetic resonance in the microwave region, and tailorable saturation magnetization, make YIG and its derivatives some of the fittest materials to be used in microwave applications such as circulators, isolators, catalyst and phase shifters [4,5].…”

Section: Introductionmentioning

confidence: 99%

Investigating the role of diamagnetic Cd²⁺ ions on the structural, optical, and magnetic properties of YIG

et al. 2021

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In this study, Y3-xCdxFe5O12 (0.0 ≤ × ≤0.2) powders were synthesized via the co-precipitation method at calcination temperature 1100 °C. The phase formation of YIG was confirmed from X-ray powder diffraction (XRD) and Fourier Transform Infrared (FTIR) technique. The change of the band-gap energy, determined from the analysis of UV-visible spectroscopy, with the particle size was in agreement with the quantum confinement effect for x between 0.02 and 0.2. The magnetization study showed a non-monotonic change in the saturation magnetization and the coercivity with the increase of Cd2+ content. This behavior is an indication of both effect of particle size and the concentration of the doped Cadmium. The Mӧssbauer spectroscopy analysis confirmed the existence of Fe3+ in both octahedral and tetrahedral sites and the non-existence of Fe2+.

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“…Yttrium iron garnet (YIG) is a ferrite material with excellent magnetic properties, making it a promising candidate for use in high performance microwave and electrochemical devices, such as circulators and latching‐type phase shifters. This is due to its high resistivity, Curie temperature ( T c ), and chemical stability, in addition to its thermophysical, mechanical, and unique magnetic properties such as narrow ferromagnetic resonance (FMR) line width (∆ H ), and low dielectric loss . YIG possesses a cubic crystal structure with a general formula of A 3 B 5 O 12 and specific formula of Y 3 Fe 5 O 12 .…”

Section: Introductionmentioning

confidence: 99%

“…Material composition is essential to the properties of garnet ferrite, because the chosen stoichiometry forcefully determines the magnetic properties of YIG ferrite . Mn, Al‐substituted YIG, which possesses a narrow ∆ H with a low H c at a relatively sufficient saturation magnetization (4 πM s) and SQR could be employed for latching‐type phase shifters at S‐band frequency ranges (3–5 GHz) . By substituting Mn and Al, the interaction between the sublattices of the YIG structure leads to a modification of their properties.…”

Section: Introductionmentioning

confidence: 99%

Effect of particle size of as‐milled powders on microstructural and magnetic properties of Y₃Mn_xAl_0.8‐_xFe_4.2O₁₂ ferrites

et al. 2018

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Yttrium iron garnet ferrite using the chosen stoichiometry of (Y3)(MnxAl0.8‐xFe4.2)O12 with x = 0.1 and different milling powder sizes were prepared through ball milling for various milling times to study the effect of powder size reduction on the resulting microstructural and magnetic properties. Sintered yttrium iron garnet ferrites were characterized by X‐ray diffraction analysis and scanning electron microscopy. The particle size (D50) of as‐milled calcined powder was decreased using ball milling (from 3.682 μm for a 0.5‐hour‐long milling to 1.606 μm for a 2.5‐hour‐long milling). Scanning electron microscopy analyses confirmed that the sintered grain exhibited a crystal size that was increased from initial values (average crystal grain sizes of 3.5 ± 0.1 μm for 0.5 hour of milling) up to 6.2 ± 0.1 μm after 2.5 hour of ball milling and the subsequent sintering process. The same sintered specimen after 2.5 hour of ball milling exhibited an obvious increase in saturation magnetization (4πMs), remanence (Br), and squareness ratio (namely Br/4πMs); it also caused a notable decline in coercivity (Hc) and ferromagnetic resonance line width (∆H), which were attributed to the introduction of a smaller size of calcined powder after milling and subsequently resulted in a larger sintered grain. Furthermore, a sufficient spin‐wave line width (∆Hk) and low insertion loss (|S21|) were obtained for the operation of the microwave device. The aforementioned results are all beneficial to the use of yttrium iron garnet ferrite in microwave applications. A correlation between the calcined powder size after milling, grain crystal size after sintering, and magnetic properties was evident in this study. The strict control of calcined powder size after milling is critical in tailoring suitable magnetic properties for yttrium iron garnet ferrite manufacturing processes.

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Effect of specific surface area of raw material Fe2O3 on magnetic properties of YIG

Cited by 8 publications

References 9 publications

Enhancement in Curie Temperature of Yttrium Iron Garnet by Doping with Neodymium

Enhancement in Curie Temperature of Yttrium Iron Garnet by Doping with Neodymium

Investigating the role of diamagnetic Cd²⁺ ions on the structural, optical, and magnetic properties of YIG

Effect of particle size of as‐milled powders on microstructural and magnetic properties of Y₃Mn_xAl_0.8‐_xFe_4.2O₁₂ ferrites

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Effect of specific surface area of raw material Fe2O3 on magnetic properties of YIG

Cited by 8 publications

References 9 publications

Enhancement in Curie Temperature of Yttrium Iron Garnet by Doping with Neodymium

Enhancement in Curie Temperature of Yttrium Iron Garnet by Doping with Neodymium

Investigating the role of diamagnetic Cd2+ ions on the structural, optical, and magnetic properties of YIG

Effect of particle size of as‐milled powders on microstructural and magnetic properties of Y3MnxAl0.8‐xFe4.2O12 ferrites

Contact Info

Product

Resources

About

Investigating the role of diamagnetic Cd²⁺ ions on the structural, optical, and magnetic properties of YIG

Effect of particle size of as‐milled powders on microstructural and magnetic properties of Y₃Mn_xAl_0.8‐_xFe_4.2O₁₂ ferrites