Journal of The European Ceramic Society最新文献

筛选
英文 中文
Dual strategy to enhance the nitridation resistance of MoSi2-based ceramics for high-temperature applications 提高高温mosi2基陶瓷耐氮化性能的双重策略
IF 6.2 2区 材料科学
Journal of The European Ceramic Society Pub Date : 2026-07-01 Epub Date: 2026-01-18 DOI: 10.1016/j.jeurceramsoc.2026.118155
Lu Zhu , Nana Zhu , Pengju Tang , Baojing Zhang , Shengyuan Lei , Xiaohong Wang , Peizhong Feng
{"title":"Dual strategy to enhance the nitridation resistance of MoSi2-based ceramics for high-temperature applications","authors":"Lu Zhu ,&nbsp;Nana Zhu ,&nbsp;Pengju Tang ,&nbsp;Baojing Zhang ,&nbsp;Shengyuan Lei ,&nbsp;Xiaohong Wang ,&nbsp;Peizhong Feng","doi":"10.1016/j.jeurceramsoc.2026.118155","DOIUrl":"10.1016/j.jeurceramsoc.2026.118155","url":null,"abstract":"<div><div>MoSi<sub>2</sub>‑based ceramics with superior high‑temperature nitridation resistance were developed through a dual strategy combining Al alloying and pre‑oxidation. A two-step route, self-propagating high-temperature synthesis followed by spark plasma sintering, was employed to prepare MoSi<sub>2</sub> and Al-alloyed Mo(Si<sub>0.95</sub>Al<sub>0.05</sub>)<sub>2</sub>. Al incorporation and pre‑oxidation at 1500 °C produced dense Al–Si–O composite scales that merged the impermeability of SiO<sub>2</sub> with the thermal stability of Al<sub>2</sub>O<sub>3</sub>. During direct nitridation at 1200 °C, the nitrogen diffusion coefficients of Mo(Si<sub>0.95</sub>Al<sub>0.05</sub>)<sub>2</sub> decreased by 76% and 82% in the rapid (0–16 h) and slow (16–64 h) stages, and its overall mass change was much lower than that of MoSi<sub>2</sub>. Pre‑oxidation further enhanced protection, reducing diffusion coefficients to 0.005 and 0.001 mg/cm<sup>2</sup>·h<sup>0.5</sup> compared with MoSi<sub>2</sub> (0.007 and 0.004 mg/cm<sup>2</sup>·h<sup>0.5</sup>), due to the formation of stable Al–Si–O scales. Therefore, the pioneering dual strategy demonstrates a novel approach for developing advanced MoSi<sub>2</sub>-based ceramics with outstanding high-temperature nitridation resistance.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"46 8","pages":"Article 118155"},"PeriodicalIF":6.2,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146036913","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Giant strain vanishes in multilayer ceramics: The limitation of defect-dipole engineering 大应变在多层陶瓷中消失:缺陷偶极子工程的局限性
IF 6.2 2区 材料科学
Journal of The European Ceramic Society Pub Date : 2026-07-01 Epub Date: 2026-01-15 DOI: 10.1016/j.jeurceramsoc.2026.118147
Chengming Li , Lang Bian , Jianhui Jia , Shangpeng Yang , Kai Li , Pengrong Ren
{"title":"Giant strain vanishes in multilayer ceramics: The limitation of defect-dipole engineering","authors":"Chengming Li ,&nbsp;Lang Bian ,&nbsp;Jianhui Jia ,&nbsp;Shangpeng Yang ,&nbsp;Kai Li ,&nbsp;Pengrong Ren","doi":"10.1016/j.jeurceramsoc.2026.118147","DOIUrl":"10.1016/j.jeurceramsoc.2026.118147","url":null,"abstract":"<div><div>The introduction of oxygen vacancies and defect dipoles to induce giant bending strain is a cutting-edge strategy to improve the performance of piezoelectric ceramics. However, its feasibility in a more widely used multi-layer structure is still unknown. In this study, it is found that the giant strain successfully achieved in single-layer ceramics almost disappeared in multi-layer ceramics based on the same material system. The system analysis shows that the internal mechanical clamping effect introduced by the multi-layer structure and the opposite bending direction between adjacent layers are the root causes of large strain failure. The conclusion of this study clearly points out that the excellent piezoelectric properties in unconstrained single-layer samples cannot be directly converted into the actual advantages of multi-layer devices. This finding provides a crucial application perspective correction for the current popular defect engineering research.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"46 7","pages":"Article 118147"},"PeriodicalIF":6.2,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146034627","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Performance improvement of Si3N4/BN slurry and porous ceramics caused by the synergistic effect of BN surface functionalization and high light transmission of SiO2 氮化硼表面功能化与SiO2高透光性协同作用对氮化硼/氮化硼浆料和多孔陶瓷性能的改善
IF 6.2 2区 材料科学
Journal of The European Ceramic Society Pub Date : 2026-07-01 Epub Date: 2025-12-30 DOI: 10.1016/j.jeurceramsoc.2025.118118
Yifei Yan , Chuanzhen Huang , Zhenyu Shi , Zhen Wang , Longhua Xu , Shuiquan Huang , Meina Qu , Zhengkai Xu , Dijia Zhang , Baosu Guo , Tianye Jin , Xiaodan Wang , Hanlian Liu , Dun Liu , Peng Yao
{"title":"Performance improvement of Si3N4/BN slurry and porous ceramics caused by the synergistic effect of BN surface functionalization and high light transmission of SiO2","authors":"Yifei Yan ,&nbsp;Chuanzhen Huang ,&nbsp;Zhenyu Shi ,&nbsp;Zhen Wang ,&nbsp;Longhua Xu ,&nbsp;Shuiquan Huang ,&nbsp;Meina Qu ,&nbsp;Zhengkai Xu ,&nbsp;Dijia Zhang ,&nbsp;Baosu Guo ,&nbsp;Tianye Jin ,&nbsp;Xiaodan Wang ,&nbsp;Hanlian Liu ,&nbsp;Dun Liu ,&nbsp;Peng Yao","doi":"10.1016/j.jeurceramsoc.2025.118118","DOIUrl":"10.1016/j.jeurceramsoc.2025.118118","url":null,"abstract":"<div><div>The fabrication of porous Si<sub>3</sub>N<sub>4</sub>/BN ceramics for high-temperature radomes via vat photopolymerization is hindered by excessive slurry viscosity, which restricts the recoating process, and by limited curing depth. To overcome these challenges, we developed a high-performance slurry using a synergistic strategy combining BN surface functionalization with optical modulation via SiO<sub>2</sub>. Ultrasonic-assisted hydrolysis and silane coupling significantly enhanced interfacial compatibility with the resin, reducing viscosity from 20.83 to 4.51 Pa·s at a shear rate of 30 s<sup>−1</sup>. Simultaneously, the incorporation of refractive-index-matched SiO<sub>2</sub> effectively suppressed light scattering, thereby increasing curing depth and structural integrity. Furthermore, SiO<sub>2</sub> regulated liquid-phase behavior during sintering to optimize the microstructure. The resulting ceramics exhibited an exceptional property balance: 42.14 % porosity, 68.2 MPa flexural strength, a dielectric constant of 2.56, and a loss tangent of 6.85 × 10<sup>−3</sup>. These metrics satisfy the stringent requirements for wave-transparent applications, offering a robust pathway for manufacturing complex-shaped components.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"46 7","pages":"Article 118118"},"PeriodicalIF":6.2,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145882145","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A (Ce0.2Sm0.2Gd0.2Nd0.2Y0.2)2Zr2O7-ZrO2 ceramic fiber aerogel with excellent thermal insulation properties A (Ce0.2Sm0.2Gd0.2Nd0.2Y0.2)2Zr2O7-ZrO2陶瓷纤维气凝胶具有优异的保温性能
IF 6.2 2区 材料科学
Journal of The European Ceramic Society Pub Date : 2026-07-01 Epub Date: 2025-12-24 DOI: 10.1016/j.jeurceramsoc.2025.118113
Yumin An , Jiabao Xu , Mingyao Song , Liwen Yan , Libin Zhao
{"title":"A (Ce0.2Sm0.2Gd0.2Nd0.2Y0.2)2Zr2O7-ZrO2 ceramic fiber aerogel with excellent thermal insulation properties","authors":"Yumin An ,&nbsp;Jiabao Xu ,&nbsp;Mingyao Song ,&nbsp;Liwen Yan ,&nbsp;Libin Zhao","doi":"10.1016/j.jeurceramsoc.2025.118113","DOIUrl":"10.1016/j.jeurceramsoc.2025.118113","url":null,"abstract":"<div><div>In this work, a (Ce<sub>0.2</sub>Sm<sub>0.2</sub>Gd<sub>0.2</sub>Nd<sub>0.2</sub>Y<sub>0.2</sub>)<sub>2</sub>Zr<sub>2</sub>O<sub>7</sub>-ZrO<sub>2</sub> ceramic fiber aerogel was successfully prepared by combining airflow spinning and high-temperature pyrolysis method using rare earth carbonates as raw materials. XRD, TEM, and EDS analyses showed that the (Ce<sub>0.2</sub>Sm<sub>0.2</sub>Gd<sub>0.2</sub>Nd<sub>0.2</sub>Y<sub>0.2</sub>)<sub>2</sub>Zr<sub>2</sub>O<sub>7</sub>-ZrO<sub>2</sub> ceramic fiber aerogel exhibited a composite structure of defective fluorite and cubic zirconia phases after heat treatment at 1200 °C, with a uniform distribution of rare earth elements. The aerogel was able to achieve excellent compression resilience when compressed in liquid nitrogen, room temperature and alcohol lamp flame. In addition, the thermal conductivity of (Ce<sub>0.2</sub>Sm<sub>0.2</sub>Gd<sub>0.2</sub>Nd<sub>0.2</sub>Y<sub>0.2</sub>)<sub>2</sub>Zr<sub>2</sub>O<sub>7</sub>-ZrO<sub>2</sub> ceramic fiber aerogel was about 31.9 mW·m<sup>−1</sup>·K<sup>−1</sup> at room temperature, and the ceramic fiber aerogel could reduce the high temperature of 1200 °C to about 323 °C with 10 mm thickness and remain stable. The infrared reflectance of the ceramic fiber aerogel after heat treatment at 1000 °C is 91.7 %, which demonstrates excellent thermal radiation shielding capability.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"46 7","pages":"Article 118113"},"PeriodicalIF":6.2,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145882146","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Grain size effect-induced evolution of relaxor state, domain structure, and polarization in Bi0.5Na0.5TiO3-based ceramics 晶粒尺寸效应诱导bi0.5 na0.5 tio3基陶瓷弛豫态、畴结构和极化的演化
IF 6.2 2区 材料科学
Journal of The European Ceramic Society Pub Date : 2026-07-01 Epub Date: 2025-12-18 DOI: 10.1016/j.jeurceramsoc.2025.118103
Ziyu Wu , Yiming Ma , Jiali Zheng , Junlin Yang , Yihao Guo , Chunlin Zhao , Xiao Wu , Min Gao , Tengfei Lin , Bo Wu , Yanli Huang , Cong Lin
{"title":"Grain size effect-induced evolution of relaxor state, domain structure, and polarization in Bi0.5Na0.5TiO3-based ceramics","authors":"Ziyu Wu ,&nbsp;Yiming Ma ,&nbsp;Jiali Zheng ,&nbsp;Junlin Yang ,&nbsp;Yihao Guo ,&nbsp;Chunlin Zhao ,&nbsp;Xiao Wu ,&nbsp;Min Gao ,&nbsp;Tengfei Lin ,&nbsp;Bo Wu ,&nbsp;Yanli Huang ,&nbsp;Cong Lin","doi":"10.1016/j.jeurceramsoc.2025.118103","DOIUrl":"10.1016/j.jeurceramsoc.2025.118103","url":null,"abstract":"<div><div>The grain size effect on relaxor state, domain structure, and electric field-induced polarization in Bi<sub>0.5</sub>Na<sub>0.5</sub>TiO<sub>3</sub> (BNT)-based ceramics is studied using a paradigmatic system. The average grain size increases from 0.50 to 1.90 μm when sintering temperature (<em>T</em><sub>s</sub>) is elevated from 1050 to 1200 °C. All the ceramics have a similar phase structure, while domain width increases from dozens of nanometers to &gt; 100 nm, and more grains show an obvious domain morphology with increasing grain size. Three stages of relaxor state and polarization evolution are observed. At <em>T</em><sub>s</sub> = 1050 ℃ (0.50 μm), a low polarization response and unobservable relaxor-ferroelectric transition indicate the weak ferroelectric correlation due to the quite small grains. At <em>T</em><sub>s</sub> = 1100–1150 ℃ (0.91–1.27 μm), an enhanced polarization and obvious relaxor-ferroelectric transition &amp; domain switching are observed. At <em>T</em><sub>s</sub> = 1170–1200 ℃ (1.44–1.90 μm), the squared ferroelectric loops with high polarization and enhanced depolarization temperature are shown, demonstrating that only the large grains can stabilize the ferroelectric correlation and promote a high polarization. This work reveals the significant grain size effect of relaxor state and electric field-induced polarization in BNT-based ceramics.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"46 7","pages":"Article 118103"},"PeriodicalIF":6.2,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145802286","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Giant piezoelectric properties in hard-type PMNN-PZT ceramics via templated grain growth using BZT templates 利用BZT模板在硬型PMNN-PZT陶瓷中模板化晶粒生长制备巨压电特性
IF 6.2 2区 材料科学
Journal of The European Ceramic Society Pub Date : 2026-07-01 Epub Date: 2026-01-17 DOI: 10.1016/j.jeurceramsoc.2026.118143
Jae-Min Cha , Cheol-Woo Ahn , Hyun-Ae Cha , Byung-Dong Hahn , Woon-Ha Yoon , Young Kook Moon , Seog-Young Yoon , Jong-Jin Choi
{"title":"Giant piezoelectric properties in hard-type PMNN-PZT ceramics via templated grain growth using BZT templates","authors":"Jae-Min Cha ,&nbsp;Cheol-Woo Ahn ,&nbsp;Hyun-Ae Cha ,&nbsp;Byung-Dong Hahn ,&nbsp;Woon-Ha Yoon ,&nbsp;Young Kook Moon ,&nbsp;Seog-Young Yoon ,&nbsp;Jong-Jin Choi","doi":"10.1016/j.jeurceramsoc.2026.118143","DOIUrl":"10.1016/j.jeurceramsoc.2026.118143","url":null,"abstract":"<div><div>Textured Pb[(Mg<sub>0.5</sub>Ni<sub>0.5</sub>)<sub>1/3</sub>Nb<sub>2/3</sub>]O<sub>3</sub>-PbZrTiO<sub>3</sub> (PMNN–PZT) piezoelectric ceramics were fabricated by the templated grain growth (TGG) method. Plate-like Ba(Zr<sub>0.1</sub>Ti<sub>0.9</sub>)O<sub>3</sub> (BZT) templates were synthesized by topochemical molten salt synthesis (TMSS) and employed to promote grain orientation. Compared with conventional BaTiO<sub>3</sub> (BT) templates, BZT templates exhibited lower reactivity with the matrix, resulting in a reduced tetragonal phase shift and a higher Lotgering factor after texturing. The phase composition of PMNN–PZT was further optimized to the morphotropic phase boundary (MPB) region by adjusting the Zr/Ti ratio. The textured ceramics thus obtained exhibited both a high piezoelectric charge coefficient (<em>d</em>₃₃ ∼ 610 pC/N) and a high mechanical quality factor (<em>Q</em><sub>m</sub> ∼1145), overcoming the typical trade-off between these properties. These findings demonstrate that BZT templating is an effective strategy for tailoring phase composition and enhancing the electromechanical performance of textured piezoelectric ceramics.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"46 8","pages":"Article 118143"},"PeriodicalIF":6.2,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146036558","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Molecular engineering of dispersants for tailoring rheology in slurry-based ceramic 3D printing: From colloidal control to sintered performance 浆料陶瓷3D打印中用于定制流变性的分散剂分子工程:从胶体控制到烧结性能
IF 6.2 2区 材料科学
Journal of The European Ceramic Society Pub Date : 2026-07-01 Epub Date: 2026-01-20 DOI: 10.1016/j.jeurceramsoc.2026.118148
Shixiang Zhou , Zhuofeng Peng , Chunze Yan , Yusheng Shi
{"title":"Molecular engineering of dispersants for tailoring rheology in slurry-based ceramic 3D printing: From colloidal control to sintered performance","authors":"Shixiang Zhou ,&nbsp;Zhuofeng Peng ,&nbsp;Chunze Yan ,&nbsp;Yusheng Shi","doi":"10.1016/j.jeurceramsoc.2026.118148","DOIUrl":"10.1016/j.jeurceramsoc.2026.118148","url":null,"abstract":"<div><div>The molecular engineering of dispersants plays a critical role in addressing the rheological challenges associated with high solid loading and printability in slurry-based ceramic 3D printing. This review establishes a systematic framework of \"dispersant architecture-colloidal state-rheology-sintered performance\" to guide the selection and design of dispersants for vat photopolymerization (VPP) and direct ink writing (DIW), which are the dominant slurry-based ceramic 3D printing techniques. The discussion begins with a comparison of the technical characteristics between VPP- and DIW- based ceramic 3D printing, including the forming process, and applications, with a specific emphasis on the different rheological requirements. We further elucidate dispersant design strategies by discussing dispersion mechanism, classification, modification, and characterization methods. The review then highlights how dispersant molecular structure governs rheological behavior, printability, and green-body and sintered properties, enabling tailored performance for structural and functional applications. Finally, this review summarizes dispersant selection criteria and addresses both existing challenges and potential directions for future research.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"46 8","pages":"Article 118148"},"PeriodicalIF":6.2,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146036569","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Active learning-assisted experimental design for porous ceramic manufacturing 多孔陶瓷制造的主动学习辅助实验设计
IF 6.2 2区 材料科学
Journal of The European Ceramic Society Pub Date : 2026-07-01 Epub Date: 2025-12-30 DOI: 10.1016/j.jeurceramsoc.2025.118116
Jnanesh Gopale Gowda, Liam Latour, Paul Baral, Renaud Ferrier, Sébastien Saunier
{"title":"Active learning-assisted experimental design for porous ceramic manufacturing","authors":"Jnanesh Gopale Gowda,&nbsp;Liam Latour,&nbsp;Paul Baral,&nbsp;Renaud Ferrier,&nbsp;Sébastien Saunier","doi":"10.1016/j.jeurceramsoc.2025.118116","DOIUrl":"10.1016/j.jeurceramsoc.2025.118116","url":null,"abstract":"<div><div>Porous alumina ceramics are fabricated using the sacrificial template method to investigate the impact of two different sphere sizes, PMMA porogen (<span><math><msub><mrow><mi>D</mi></mrow><mrow><mn>50</mn></mrow></msub></math></span> of 80 and 163 µm) and volume fraction (up to 76 vol%) on material properties. In order to screen the viable parameter space (where samples are mechanically resistant and permeable) efficiently and to leverage the possibility to manufacture several samples in parallel, a batch active learning algorithm coupled with a data-driven model based on Gaussian process classification is developed. Complementary, a Gaussian process regression (GPR) model is developed to predict permeability trends across the viable parametric space. Both models are tested and blind-validated experimentally using unseen data. The combination of GPC and active learning offers a powerful tool for generating effective experimental plans, particularly when investigating processes with large parametric spaces.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"46 7","pages":"Article 118116"},"PeriodicalIF":6.2,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146034658","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Fe-vacancy-modified Bi-YIG ferrites with high saturation magnetization and high dielectric constant for miniaturization of C-X band circulators 高饱和磁化和高介电常数的铁空位修饰Bi-YIG铁氧体用于C-X波段环行器小型化
IF 6.2 2区 材料科学
Journal of The European Ceramic Society Pub Date : 2026-07-01 Epub Date: 2025-12-18 DOI: 10.1016/j.jeurceramsoc.2025.118100
Zelai Cheng , Yulan Jing , Xi Wang , Feng Qiao , Xiuling Yang , Ying Chen , Mingshan Qu , Hua Su
{"title":"Fe-vacancy-modified Bi-YIG ferrites with high saturation magnetization and high dielectric constant for miniaturization of C-X band circulators","authors":"Zelai Cheng ,&nbsp;Yulan Jing ,&nbsp;Xi Wang ,&nbsp;Feng Qiao ,&nbsp;Xiuling Yang ,&nbsp;Ying Chen ,&nbsp;Mingshan Qu ,&nbsp;Hua Su","doi":"10.1016/j.jeurceramsoc.2025.118100","DOIUrl":"10.1016/j.jeurceramsoc.2025.118100","url":null,"abstract":"<div><div>The escalating demand for miniaturized high-frequency circulators in radar and satellite systems necessitates ferrite materials that concurrently possess a high saturation magnetization (4π<em>M</em><sub><em>s</em></sub>), a narrow ferromagnetic resonance linewidth (<em>ΔH</em>), and a high dielectric constant (<em>ε</em><sub><em>r</em></sub>). In this study, a defect-engineered Bi<sub>1.4</sub>Ca<sub>0.3</sub>Zr<sub>0.3</sub>Y<sub>1.3</sub>Fe<sub>4.6−x</sub>In<sub>0.1</sub>O<sub>12−δ</sub> 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<em>M</em><sub><em>s</em></sub> of around 2001 G, enabling C-X band operation. Simultaneously, it attained narrow ferromagnetic resonance linewidth (<em>ΔH</em> ≈ 112 Oe) through reduced magnetocrystalline anisotropy (|<em>K</em><sub><em>1</em></sub>|) and an enhanced dielectric constant (<em>ε</em><sub><em>r</em></sub> ≈ 26.2) via the “rattling” effect that compensated for vacancy-induced polarization loss. A straight-circuit microstrip circulator based on this ferrite (<em>r</em><sub><em>0</em></sub> = 2.14 mm, <em>r</em><sub><em>1</em></sub> = 7.76 mm) was operated in the bandwidth from 4.23 to 9.85 GHz. It exhibited insertion loss (<em>S</em><sub><em>21</em></sub>) better than −0.5 dB and isolation/return loss (<em>S</em><sub><em>11</em></sub>/<em>S</em><sub><em>12</em></sub>) 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.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"46 7","pages":"Article 118100"},"PeriodicalIF":6.2,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145839128","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Achieving high-energy storage via microwave sintering-assisted BiFeO3–BaTi0.8Zr0.2O3–NaTaO3 relaxor ferroelectrics 微波烧结辅助BiFeO3-BaTi0.8Zr0.2O3-NaTaO3弛豫铁电体实现高能存储
IF 6.2 2区 材料科学
Journal of The European Ceramic Society Pub Date : 2026-07-01 Epub Date: 2026-01-08 DOI: 10.1016/j.jeurceramsoc.2026.118139
Shu-Yu Chen , Kuei-Chih Feng , R.R. Chien , Haidee Mana-ay , Cheng-Sao Chen , Chi-Shun Tu , Pin-Yi Chen
{"title":"Achieving high-energy storage via microwave sintering-assisted BiFeO3–BaTi0.8Zr0.2O3–NaTaO3 relaxor ferroelectrics","authors":"Shu-Yu Chen ,&nbsp;Kuei-Chih Feng ,&nbsp;R.R. Chien ,&nbsp;Haidee Mana-ay ,&nbsp;Cheng-Sao Chen ,&nbsp;Chi-Shun Tu ,&nbsp;Pin-Yi Chen","doi":"10.1016/j.jeurceramsoc.2026.118139","DOIUrl":"10.1016/j.jeurceramsoc.2026.118139","url":null,"abstract":"<div><div>The pursuit of high-performance lead-free dielectric capacitors has increasingly focused on compositional complexity and advanced processing techniques. In this work, a ternary high-entropy ceramic system, (1–<span><math><mi>x</mi></math></span>)(0.7BiFeO<sub>3</sub>–0.3BaTi<sub>0.8</sub>Zr<sub>0.2</sub>O<sub>3</sub>)–<span><math><mi>x</mi></math></span>NaTaO<sub>3</sub> (<span><math><mi>x</mi></math></span> = 0, 0.05, 0.10, 0.15, and 0.2), was synthesized to investigate the role of configurational entropy (<em>S</em><sub><em>config</em></sub>) in enhancing performance stability and energy storage. The <span><math><mi>x</mi></math></span> = 0.10 sample via conventional sintering (CS) process achieves a high recoverable energy density (<em>W</em><sub><em>rec</em></sub>) of 10.8 J/cm<sup>3</sup> and an efficiency (<em>η</em>) of 78.8 % at an electric field of 550 kV/cm. In addition, the <span><math><mi>x</mi></math></span> = 0.10 sample via microwave sintering (MWS) demonstrates a <em>W</em><sub><em>rec</em></sub> of 12.6 J/cm<sup>3</sup> with a η of 79.5 % at an electric field of 600 kV/cm, resulting from the rapid volumetric heating, effectively reduced porosity and preserved volatile constituents. This study highlights an effective entropy-driven design, combined with rapid microwave sintering for promoting energy storage capability in lead-free dielectric materials.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"46 7","pages":"Article 118139"},"PeriodicalIF":6.2,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145940033","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:604180095
Book学术官方微信
小红书