JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
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2023
·Vol. 34
·期 9
·1-10
·
IF 2.8
Wu Hao,Li Jie,Han Xuening,Li Wei,Sun Kai,Chen Yixin,Yan Yang,Chen Daming
In-substituted YIG ferrite (Y 3 Fe 5 − x In x O 12 ) materials were prepared by citrate nitrate sol–gel method. Phase formation, microstructure, and magnetic properties were investigated, and the effects of In-substitution were discussed detailed. X-ray diffraction results showed the In-substitution did not change the phase formation of YIG ferrite, but cause the lattice constants change slowly. Scanning electron microscopy showed the materials prepared by sol-gel method had small gain size, and In 3+ enhanced grain growth. The high-substituted content had pores among grain boundaries, which was an influence factor on magnetic property. With In-substituted increase, saturation magnetization ( σ ) increased from 21.77emu/g ( x = 0.0) to 26.94 emu/g (4π M S =1639.2 Gs) when x = 0.4, and then decreased to 20.27 emu/g (4π M S =1230.0 Gs, x = 0.5). Meanwhile, the coercivity ( H C ) decreased from 12.3 Oe to 12.1 Oe ( x = 0.3) and then increased to 13.6 Oe ( x = 0.5). For ferromagnetic resonance (FMR) linewidth (Δ H ), the narrow FMR value was Δ H = 62.82 Oe at x = 0.4. The anisotropy linewidth Δ H a and porosity linewidth Δ H p were mainly influence factors on linewidth of materials, and the magnetism was discussed detailed. The narrow FMR linewidth and high saturation magnetization suggested the possible use of these materials in high-frequency microwave applications.
研究领域:
材料科学
·
磁学
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DOI
高影响因子
CERAMICS INTERNATIONAL
·
2024
·
IF 5.1
Qianqian Chen,Panpan Lin,Tiesong Lin,Peng He
The paper uncovers microstructural evolution and bonding mechanism of yttrium iron garnet ferrite (YIG) and magnesium titanate ceramic (MTC) brazed by bismuth-based glass ceramic . The resulting mechanical and dielectric properties of the proposed YIG/MTC joint were investigated in detail. The reaction mechanism was thoroughly studied. Micro and nano CoFe 2 O 4 were generated in the glass seam. Besides, a CoFe 2 O 4 reaction layer was formed at the interface of MTC/glass ceramic. The atoms stacked along the plane (220), and a complete coherent boundary was emerged between the CoFe 2 O 4 reaction layer and MTC ceramic subsequently. YBO 3 clusters were formed at YIG/glass interface and Bi 9 Ti 3 Fe 5 O 27 stripe phases were generated in the glass matrix. The joint shear strength increased with the brazing temperature increasing, and reached a maximum value of 72 MPa at 800 °C. The dielectric constant of YIG/MTC joint varied from 16.5 to 17.9, and the dielectric loss tangent was nearly 0.001 at higher frequency.
研究领域:
材料科学
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无机非金属材料
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焊接技术
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DOI
高影响因子
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
·
2021
·Vol. 45
·期 14
·19883-19894
·
IF 5.164
Shilin Luo,Zhitong Xu,Jian Liu,Baoliang Xu,Shiyin Ji,Yi Ding,Shengtai Zhang,Ling Zhang,Tao Duan,Jiehong Lei
Summary Yttrium iron garnet (YIG) is a potential matrix for immobilizing high-level radioactive waste (HLW) due to its high actinide solubility and chemical flexibility. In this study, Ce was employed as a surrogate of Pu. A series of Y 3- x Ce x Fe 5 O 12 (0 ≤ x ≤ 1) samples were prepared by solid-state sintering at 1400°C to investigate the solubility, microstructure, and chemical durability of Ce-doped YIG. The X-ray diffraction (XRD) and scanning electron microscopy (SEM) results showed that the solubility of the Ce in a single garnet was 32 mol% at synthesis temperature of 1400°C. The SEM analysis indicated the YIG ceramic grain growth and compactness as Ce concentrations increased. The XPS analysis indicated that the amount of Ce 4+ out of the total Ce increased as the CeO 2 doping increased, and the maximum value was more than 75.9% in the sample synthesis at 1400°C. Static leaching experiments were also conducted on the single Ce-doped garnet synthesized at 1400°C. The normalized LR Ce and LR Y release rates were approximately 10 −4 and 10 −5 g m −2 d −1 after 42 days, respectively. The chemical durability was comparable to other ceramic matrices (such as pyrochlore and zircon, among others). These results demonstrated that YIG ceramics are suitable for immobilizing HLW, such as Pu or U. Highlights The solubility of Ce in single-phase YIG was 32 mol% at 1400°C. Grain size and compactness increased Ce content. The concentration of Ce 4+ in total Ce of sample could be over 75.9%. The obtained YIG ceramics exhibit excellent chemical stability. Novelty Statement Y 3-x Ce x Fe 5 O 12 ceramics were prepared by solid-state sintering and the solubility, microstructure, and chemical durability were investigated. The solubility of Ce was 32 mol% at 1400°C. The obtained YIG ceramics exhibit excellent chemical stability.
研究领域:
材料科学
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核废物管理
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DOI
高影响因子
MATERIALS & DESIGN
·
2022
·
IF 9.417
Qianqian Chen,Panpan Lin,Xuanyu Du,Hiroyuki Inoue,Kazuro Kizaki,Tiesong Lin,Peng He
A new low-temperature magnetic Bi 2 O 3 -CoO-Fe 2 O 3 -B 2 O 3 (BCFB) glass was designed to acquire magnetic yttrium iron garnet (YIG/YIG) joint. This paper investigated the thermal behavior of BCFB glass and its wettability on YIG. The microstructural evolution, mechanical and electromagnetic properties of YIG/YIG joint were systematically studied. CoFe 2 O 4 nuclei were gradually formed, growing up into nano-scale CoFe 2 O 4 crystals in the glass seam. Meanwhile, some CoFe 2 O 4 crystals grew up excessively by swallowing nano CoFe 2 O 4 , reaching microns. YBO 3 reaction layer was formed and grew into YBO 3 whiskers at the interface of YIG/glass with the brazing temperature increasing. The joint shear strength increased, reaching a maximum of 85.2 MPa at 775 °C under the collaborative reinforcement of well-integrated interface and glass-ceramic seam, then declined due to the aggravative reaction. The dielectric constant of YIG/YIG joints decreased with the brazing temperature increasing, varying from 18.5 to 16.6 at the frequency of 10 MHz. AFM/MFM and VSM analyses indicate that the glass seam performed magnetic property. The saturation magnetization of BCFB glass reached about 4.2 emu/g and 5.0 emu/g heat-treated at 750 °C and 775 °C, respectively, which could effectively enhance the magnetism of the glass seam.
研究领域:
材料科学
·
磁学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2024
·
IF 5.8
Yang Xiao,Jie Li,Zihan Peng,Tingchuan Zhou,Yan Yang,Yida Lei,Yanlin Ma,Yingli Liu
Increasing the dielectric constant of yttrium iron garnet (YIG) ferrites while maintaining low losses is crucial for miniaturizing microwave devices. This paper reports a high-relative-dielectric-constant, low-loss YIG ferrite synthesized by a solid-state sintering method employing multi-ion substitution composite regulation. By substituting high-polarizability Bi 3+ ions, the relative dielectric constant was increased to over 17. Analysis based on complex chemical bond theory (P-V-L) and X-ray photoelectron spectroscopy (XPS) revealed that the dielectric constant was predominantly influenced by the ionicity of the Y/Bi/Ca-O bonds. Enhancements in lattice energy and reductions in Fe 2+ content effectively reduced dielectric losses. Appropriate ion substitution enhanced the saturation magnetization and significantly reduced the FMR linewidth. The synthesized Bi 0.6 CaY 1.4 Sn 0.4 V 0.3 Fe 4.3 O 12 exhibits superior electromagnetic properties (ε r = 17.35 @ 8.0 GHz, tanδ = 4.747×10 −4 , M s = 1437.03 Gs, ΔH = 80.02 Oe), demonstrating great potential for application in miniaturized microwave devices.
研究领域:
材料科学
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电子工程
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DOI
高影响因子
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
·
2026
·
IF 3
Tengbin Deng,Yichu Yin,Hong Wang,Chuanjian Wu,Hongqiu Xie,Haizhi Dou,Qifan Li,Xiaona Jiang,Ke Sun,Zhongwen Lan,Zhong Yu
The rapid development of third-generation semiconductors such as SiC and GaN has driven switching power supply operating frequencies into the MHz regime, imposing increasingly stringent requirements on MnZn power ferrites. In addition to high-frequency, low-loss performance and high saturation flux density, adequate mechanical strength, particularly flexural strength, is essential for reliable device operation. In this work, nano-sized yttrium iron garnet (YIG) is introduced as a multifunctional additive in MnZn power ferrites fabricated via a conventional solid-state reaction route, aiming to simultaneously enhance magnetic and mechanical properties. The results demonstrate that nano-YIG effectively refines the grain structure, reduces porosity, and modulates grain boundary characteristics, leading to increased grain-boundary resistivity. An optimal YIG addition of 0.02 wt% yields a flexural strength of 5.86 MPa, together with enhanced initial permeability, saturation flux density, and cut-off frequency, while significantly reducing the power loss to 943 kW/m3 at 100 °C, 2 MHz, and 50 mT. These findings provide an effective materials design strategy for high-performance MnZn ferrites targeting next-generation MHz-band power applications.
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Zelai Cheng,Xingyu Huo,Xi Wang,Mingshan Qu,Xiuling Yang,Yin Chen,Hua Su
In response to the demands for miniaturization and broadband operation in microwave ferrite circulators, high-dielectric Bi 1.2 Y 1. 3 -x Ca 0.5+x Ti x Fe 4.5-x Zr 0.5 O 12 ( x = 0–0.2) ferrites with a narrow ferromagnetic resonance linewidth were synthesized via the solid-state reaction method. The replacement of Fe 3 + ions with non-magnetic Ti 4+ ions reduces the magnetocrystalline anisotropy and increases the relative density of the ferrite, effectively narrowing the ferromagnetic resonance linewidth. This ion replacement also enhances the rattling effect due to the decrease in bond valence of the ferrite, leading to an increase in the dielectric constant, which is beneficial for the miniaturization of the circulator. The optimized microwave properties are as follows: ε r = 24.5, tan δ = 1.2 × 10 −3 , 4π M s = 1754 G, and ΔH = 57 Oe. When combined with the Ni 0.42–0.08/3 Nb 0.08/3 Cu 0.18 Zn 0.4 Fe 1.9 Mn 0.08 O 4 ferrite, which possesses a high saturation magnetization, the ring composite substrate demonstrates good matching and a tight interfacial connection. The EDS analysis reveals an element diffusion zone of approximately 1 μm at the interface, caused by the diffusion of elements with smaller ionic radii (e.g., Ni, Cu, Zn, Mn, Nb, and Ti). Finally, a microstrip dual-Y junction circulator was simulated, showing an ultrawideband operating frequency range (6–18 GHz), as well as S 11 < −18 dB, S 12 < −18 dB, and S 21 > −0.5 dB. These findings indicate the application potential of the proposed composite substrate in ultrawideband circulators.
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高影响因子
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
·
2025
·
IF 3
Zhihui Xu,Jing Li,Xiaoling Peng,Shan Tao,Jingcai Xu,Bo Hong,Xinqing Wang
The present study utilized Y 3 Fe 5 O 12 (YIG) ferrites as a coating on Fe-Si-B-Cu-Zr nanocrystalline magnetic powder to fabricate soft magnetic composites (SMCs). The influence of YIG content and annealing temperature on the magnetic properties of Fe-Si-B-Cu-Zr/YIG SMCs was investigated. It was revealed that an appropriate amount of YIG in the composite could enhance the permeability and its resistance to DC bias, while reducing eddy current loss. The results demonstrated that the Fe-Si-B-Cu-Zr/YIG SMCs coated with 1.0 wt% YIG exhibited good comprehensive magnetic properties, with a permeability of 33.8, 86.1 % retention under a DC bias of 100 Oe, and a 53.1 % reduction in eddy current loss to 13.86 mW/cm 3 at 500 kHz and 10 mT. Besides, the optimal annealing temperature for achieving decrease core loss and maximum permeability was determined to be 500℃ for the Fe-Si-B-Cu-Zr/YIG SMCs. This study demonstrates a promising coating material to enhance the high-frequency magnetic properties of nanocrystalline soft magnetic composite.
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高影响因子
CERAMICS INTERNATIONAL
·
2023
·
IF 5.2
Wanjiao Li,Jing Li,Hui Li,Feng Hu,Jingcai Xu,Bo Hong,Yunxiong Zeng,Xinqing Wang,Hongliang Ge,Xiaoling Peng
FeSiCr soft magnetic composites (SMCs) with yttrium iron garnet (YIG) coating layer were studied in this work. The YIG with nano size was synthesized by reverse co-precipitation method, which was coated on FeSiCr powders with different YIG contents. The effect of the annealing temperature on the FeSiCr/YIG SMCs was also investigated. It was found that a moderate amount of YIG ferrite could form a thin and uniform layer, resulting in significant optimizations in core loss, permeability, and DC bias characteristics. The results show that the FeSiCr/YIG SMCs with 0.75 wt% YIG exhibit the best magnetic performance ( P cv = 131.34 mW/cm 3 , μ e = 44.5 at 10 mT and 500 kHz). In addition, it was demonstrated that the FeSiCr/YIG SMCs with 0.75 wt% YIG presented the lowest core loss and largest permeability at the optimal annealing temperature of 500 °C. This study provides a new kind of FeSiCr/YIG SMCs which have good prospects to be used in high-frequency fields.
研究领域:
材料科学
·
磁学
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2026
·
IF 6
Kuan Liu,Guixiang Liu,Bo Dai,Qiuyang Zhang,Yong Ren,Fang Xu,Junbo Wu,Wei Wang,Jiurui Yang,Yulin He
Bi 1.2 Ca 1.2 Y 0.6 Zr 0.4 In x V 0.4 Fe 4.2-x O 12 (x = 0, 0.1, 0.2, 0.3, 0.4, and 0.5) ceramics were prepared using a conventional ceramic process at a reduced sintering temperature. The phase composition, microstructure, and electromagnetic properties of the as-prepared samples were characterized by X-ray diffraction, scanning electron microscopy equipped with energy spectrometer, vibrating sample magnetometry, and precision impedance analyzer.The results indicated that the substitution of Bi 3+ ion effectively reduced the sintering temperature of YIG ferrite, the magnetic-dielectric properties of the YIG ferrite could be precisely tuned by adjusting the content of In 3+ ions. The highly dense ceramic samples with garnet structure were obtained at a sintering temperature of 1020 °C. The sintered sample with x = 0.2 exhibited the optimum comprehensive performance: an average grain size of 3.4 μm, 4π M s of 1184.81 G; and an initial permeability of 78.6, a magnetic loss of 7.06× 10 −3 , and a permittivity of 16.67 at 100 kHz.
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产品关联
DOI
高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2025
·
IF 6.2
Zelai Cheng,Yulan Jing,Xi Wang,Feng Qiao,Xiuling Yang,Ying Chen,Mingshan Qu,Hua Su
The escalating demand for miniaturized high-frequency circulators in radar and satellite systems necessitates ferrite materials that concurrently possess a high saturation magnetization (4π M s ), a narrow ferromagnetic resonance linewidth ( ΔH ), and a high dielectric constant ( ε r ). In this study, a defect-engineered Bi 1.4 Ca 0.3 Zr 0.3 Y 1.3 Fe 4.6−x In 0.1 O 12−δ garnet ferrite was synthesized, in which synergistic Zr⁴⁺/In³⁺ dual-site doping and controlled Fe-vacancies improved magnetic performance. At optimal Fe-deficiency (x = 0.1), the material achieved a high 4π M s of around 2001 G, enabling C-X band operation. Simultaneously, it attained narrow ferromagnetic resonance linewidth ( ΔH ≈ 112 Oe) through reduced magnetocrystalline anisotropy (| K 1 |) and an enhanced dielectric constant ( ε r ≈ 26.2) via the “rattling” effect that compensated for vacancy-induced polarization loss. A straight-circuit microstrip circulator based on this ferrite ( r 0 = 2.14 mm, r 1 = 7.76 mm) was operated in the bandwidth from 4.23 to 9.85 GHz. It exhibited insertion loss ( S 21 ) better than −0.5 dB and isolation/return loss ( S 11 / S 12 ) below −20 dB. A curved-microstrip redesign further reduced the substrate area to 28.7% of the original while maintaining operation from 4.34 to 9.36 GHz, demonstrating exceptional potential for compact C-X band circulators.
研究领域:
材料科学
·
微波工程
·
磁学与磁性材料
·
电子器件
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Lingfeng Shi,Ziwei Liu,Ke Li,Yanbin Ning,Shengwei Dong,Shenglu Geng,Mengjie Zhang,Yulin Ma,Geping Yin,Zhenjiang Yu,Shuaifeng Lou,Hua Huo
O3-NaNi 1/3 Fe 1/3 Mn 1/3 O 2 cathodes are promising candidates for sodium-ion batteries benefited of the high theoretical capacity. However, the inherently poor electronic conductivity limits rate performance and aggravates O3-P3 phase transition, further weakens phase transition reversibility and results in structural degradation. Herein, a localized electronic regulation strategy inspired by yttrium iron garnet (YIG) is employed to address the issue of sluggish electron transport. Specifically, Y 3+ ions are utilized to partially substitute Ni 2+ to rearrange the electronic configuration of Fe 3 d orbitals, which could trigger a transition from high-spin state ( t 2 g 3 e g 2 ) to low-spin state ( t 2 g 5 e g 0 ) as well as narrow the band gap due to the asymmetric splitting of the t 2 g ∗ band near the Fermi level. Moreover, the large ionic radius tends to construct a concentration gradient of Y 3+ , thereby generating a long-range built-in electric field. Benefiting from the improved electrical conductivity, Y0.25-NFM performs 64 mAh g −1 reversible capacity at 20 C, also the enhanced reversible phase transitions assist Y0.25-NFM maintains 80.9% of initial capacity at 1 C for 500 cycles (44.7% for baseline NFM). The thorough understanding of the dual regulatory effects for Y 3+ doping on short & long-range electronic interactions provides a novel strategy to construct outstanding layered oxide cathodes for advanced SIBs.
研究领域:
材料科学
·
电化学
·
储能技术
·
固态物理
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DOI
高影响因子
危险品化学品经营许可证（带存储）