Journal of Materiomics最新文献

{"title":"Electro-elastic feature of Bi12SiO20 high temperature piezoelectric crystal for acoustic emission sensing application","authors":"Yifan Wu, Shuai Hou, Guoliang Wang, Hui Zhang, Tingting Li, Jingjing Wang, Yanlu Li, Xian Zhao, Fapeng Yu","doi":"10.1016/j.jmat.2026.101307","DOIUrl":"https://doi.org/10.1016/j.jmat.2026.101307","url":null,"abstract":"Bismuth silicate (Bi<ce:inf loc=\"post\">12</ce:inf>SiO<ce:inf loc=\"post\">20</ce:inf>, BSO) is a kind of multifunctional crystal material that has application prospects in the field of high-temperature sensing. In this study, the full set of electro-elastic constants of BSO crystal was characterized by the resonance method. A double-rotated cut (ZXtl45°/54°) with a central resonance frequency of 150 kHz and a high effective piezoelectric coefficient <ce:math altimg=\"si1.svg\"></ce:math> was designed. Temperature dependency of all independent electro-elastic constants was subsequently investigated. At room temperature, <ce:math altimg=\"si2.svg\"></ce:math> and <ce:math altimg=\"si1.svg\"></ce:math> were determined to be on the order of 45.7 pC/N and 28.4 pC/N, respectively. Based on this optimized crystal cut, a prototype of piezoelectric acoustic emission (AE) sensor was fabricated. Its performance was evaluated through Hsu-Nielsen tests to assess its reliability for structural health monitoring (SHM). The prototype exhibited a high and stable signal response from 25 °C to 500 °C with no missed detection. The peak-to-peak signal amplitudes were 207 mV at 25 °C and 199 mV at 500 °C. Notably, the signal-to-noise ratio (SNR) remained above 24 dB across the entire temperature range (25–500 °C). These results indicated the advantages of the BSO-based piezoelectric acoustic emission sensor for SHM applications at elevated temperatures.","PeriodicalId":16173,"journal":{"name":"Journal of Materiomics","volume":"20 1","pages":""},"PeriodicalIF":9.4,"publicationDate":"2026-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148691785","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Phytic acid-mediated multiscale reconstruction stabilizes high-voltage anionic redox in P2-type Mn-based layered oxide cathodes","authors":"Youmei Chen, Sheng Feng, Huan Chen, Haitao Lu, Huihui Yuan, Jiajie Wen, Xiangwei Wu, Zhaoyin Wen","doi":"10.1016/j.jmat.2026.101292","DOIUrl":"https://doi.org/10.1016/j.jmat.2026.101292","url":null,"abstract":"P2-type sodium-deficient Mn-based layered oxides with anionic oxygen redox are promising cathodes for high-energy sodium-ion batteries, yet their practical application is hindered by irreversible oxygen loss, transition-metal migration, parasitic interfacial reactions, and rapid structural degradation under high-voltage operation. Herein, we propose a phytic acid (PA)-mediated multiscale reconstruction strategy to regulate the surface to near-bulk structure of P2-type Na<ce:inf loc=\"post\">0.72</ce:inf>Li<ce:inf loc=\"post\">0.24</ce:inf>Mn<ce:inf loc=\"post\">0.76</ce:inf>O<ce:inf loc=\"post\">2</ce:inf> (NLM). Upon secondary annealing, PA transforms the residual surface alkali into an ion-conductive Na<ce:inf loc=\"post\">3</ce:inf>PO<ce:inf loc=\"post\">4</ce:inf> outer layer. Meanwhile, the annealing-induced localized reductive environment promotes oxygen-vacancy (<ce:italic>V</ce:italic><ce:inf loc=\"post\">O</ce:inf>) formation and gradient P<ce:sup loc=\"post\">5+</ce:sup> doping in the near-bulk region. The P<ce:sup loc=\"post\">5+</ce:sup> preferentially coordinates as [PO<ce:inf loc=\"post\">4</ce:inf>] tetrahedra to replace [MO<ce:inf loc=\"post\">6</ce:inf>] octahedra, enlarging the charge-transfer gap (<ce:italic>Δ</ce:italic>) <ce:italic>via</ce:italic> the inductive effect. Concurrently, the charge compensation effect drives local Mn<ce:sup loc=\"post\">4+</ce:sup> reduction, which lowers the Hubbard <ce:italic>U</ce:italic>. This dual band regulation thermodynamically stabilizes the lattice oxygen. Furthermore, the <ce:italic>V</ce:italic><ce:inf loc=\"post\">O</ce:inf>-enriched environment and P<ce:sup loc=\"post\">5+</ce:sup> doping synergistically drive the migration and subsequent oxidation of the reduced Mn species, triggering the formation of a Li<ce:inf loc=\"post\">2</ce:inf>MnO<ce:inf loc=\"post\">3</ce:inf>-like buffer interphase. Consequently, the modified PA-NLM delivers an improved rate capability of 99.19 mAh·g<ce:sup loc=\"post\">-1</ce:sup> at 5 C and enhanced long-term cycling stability, retaining 124.3 mA·h·g<ce:sup loc=\"post\">–1</ce:sup> within 1.8–4.7 V after 150 cycles at 1 C. This work provides a viable surface-to-near-bulk stabilization paradigm for durable high-voltage sodium-ion cathodes.","PeriodicalId":16173,"journal":{"name":"Journal of Materiomics","volume":"327 1","pages":""},"PeriodicalIF":9.4,"publicationDate":"2026-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148691730","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"High thermal conductivity in superhard carbon nitrides: Phonon transport and thermo-mechanical Co-design","authors":"Yue Li, Zhipeng Pei, Yue Zhu, Man Li","doi":"10.1016/j.jmat.2026.101293","DOIUrl":"https://doi.org/10.1016/j.jmat.2026.101293","url":null,"abstract":"Carbon nitrides (CN) are promising structural materials for extreme environments due to their diamond-comparable bulk modulus, high wear resistance, and low friction coefficients. While research has primarily focused on the mechanical properties of CN polymorphs, their potential for thermal management remains largely unexplored. Here, comprehensive first-principles calculations reveal that three-dimensional (3D) CN polymorphs exhibit remarkable dual functionality: they possess superhard character (up to ∼60 GPa), with bulk moduli approaching or surpassing diamond (up to 433 GPa), and exceptional thermal conductivity (up to 511 W/mK at room temperature). By correlating structural features with phonon transport behavior such as phonon group velocity and scattering rates, we demonstrate how distinct crystal architectures of the same chemical composition give rise to substantial variations in thermal conductivity. Furthermore, we introduce a co-design framework integrating thermal transport and mechanical properties with micro/nanostructures, highlighting CN structures as superhard yet highly thermal conductive materials and providing guidance for the targeted selection and development of materials for advanced thermal management applications.","PeriodicalId":16173,"journal":{"name":"Journal of Materiomics","volume":"35 1","pages":""},"PeriodicalIF":9.4,"publicationDate":"2026-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148691747","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Adaptive oxidation protection in C/Y2Si2O7 composites enabled by defect sealing and bilayer surface-structure evolution","authors":"Kuanhong Zeng, Gengkai Zhu, Xing Wang, Wei Zhang, Lei Guo, Zheng Peng, Weide Wang, Qingsong Ma","doi":"10.1016/j.jmat.2026.101289","DOIUrl":"https://doi.org/10.1016/j.jmat.2026.101289","url":null,"abstract":"Limiting oxygen ingress through surface-connected defects is critical for improving the oxidation durability of carbon-fiber-reinforced ceramic-matrix composites at high temperatures. Conventional strategies based on external coatings or passive oxide scales may be compromised during thermal cycling because thermal mismatch, cracking, and spallation can reopen pathways for oxygen ingress. This study reveals a coating-independent and intrinsically adaptive oxidation-protection mechanism in Y<ce:inf loc=\"post\">2</ce:inf>Si<ce:inf loc=\"post\">2</ce:inf>O<ce:inf loc=\"post\">7</ce:inf>-based composites, primarily enabled by a sol-gel derived intergranular amorphous SiO<ce:inf loc=\"post\">2</ce:inf> nanophase that assists in situ defect sealing during high-temperature oxidation. At 1400 °C, the amorphous grain-boundary SiO<ce:inf loc=\"post\">2</ce:inf> undergoes viscous relaxation and local redistribution, which helps seal surface-connected pores and microcracks, reduces open-defect connectivity, and confines oxidation mainly to the subsurface region. During thermal cycling, the surface further evolves into a bilayer structure with a compliant porous outer zone and a relatively dense inner layer, helping relieve thermal strain while suppressing deep oxygen permeation. After oxidation at 1400 °C for 2 h and thermal-shock, the composite retained 99.69% and 98.42% of its initial mass, respectively. Unlike conventional protection strategies that rely on external coatings or passively formed oxide scales, the present composite exploits temperature-responsive intergranular amorphous SiO<ce:inf loc=\"post\">2</ce:inf> to assist the in situ closure of surface-connected defects, thereby limiting oxygen ingress during high-temperature exposure. This work demonstrates a coating-free adaptive design strategy for improving the durability of carbon-fiber-reinforced ceramic-matrix composites in high-temperature.","PeriodicalId":16173,"journal":{"name":"Journal of Materiomics","volume":"1 1","pages":""},"PeriodicalIF":9.4,"publicationDate":"2026-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148691748","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Impacts of defects on the electrical conductivity of potassium sodium niobate from first-principles Kubo-Greenwood formalism","authors":"Zimin Feng, Fangzhou Yao, Binjie Chen, Mao-Hua Zhang, Wen Gong, Changhao Zhao, Chao-Feng Wu, Yi-Xuan Liu","doi":"10.1016/j.jmat.2026.101285","DOIUrl":"https://doi.org/10.1016/j.jmat.2026.101285","url":null,"abstract":"","PeriodicalId":16173,"journal":{"name":"Journal of Materiomics","volume":"48 1","pages":""},"PeriodicalIF":9.4,"publicationDate":"2026-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148460259","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"EDL-Catalyzed Phase-Field Modeling and Numerically Attentive Interpolation Framework for the Intelligent Design of Cu@Ag Core-Shell Nanoparticles","authors":"Haoran Ma, Jiawei Liu, Zhi Wang, Qi Cao, Shiyu Chen, Wei Tan, Yuzhou Sun, Hongwei Liang, Peng Liu, Maryam Soleimani, Nele Moelans, Zhijie Zhang, Anil Kunwar","doi":"10.1016/j.jmat.2026.101287","DOIUrl":"https://doi.org/10.1016/j.jmat.2026.101287","url":null,"abstract":"Cu@Ag core-shell nanoparticles offer a promising, low-cost alternative to pure nano-Ag for advanced power-device packaging, yet achieving uniform, ultrathin Ag shells remains challenging due to competing nucleation pathways. Here, we systematically investigate the synthesis, thermal reliability, and sintering behavior of Cu@Ag nanoparticles by tuning the Cu-to-Ag molar ratio. We demonstrate that low precursor ratios (1:1, 2:1) induce high supersaturation and homogeneous nucleation, yielding incomplete shells, whereas optimal ratios (3:1, 4:1) promote heterogeneous nucleation, producing continuous 3-5 nm shells that significantly enhance oxidation resistance. Atomistic molecular dynamics simulations reveal a non-linear relationship between shell thickness and thermal properties, identifying an optimal ∼0.8 nm shell that minimizes the melting point and maximizes sintering kinetics. To bridge these multiscale insights with practical synthesis, we develop an electrostatic double layer (EDL)-catalyzed phase-field model, generating a high-fidelity training manifold across a four-dimensional design space. This manifold underpins the CoreShellGPT engine, which integrates a transformer-inspired Numerically Attentive Interpolation Framework (NAIF) with a large language model interface. CoreShellGPT enables natural language-driven inverse design, autonomously mapping desired morphological and thermal targets to optimal synthesis parameters. This work not only establishes Cu@Ag nanoparticles as a high-reliability interconnection material but also provides a scalable, physics-informed AI blueprint for accelerating nanomaterial discovery.","PeriodicalId":16173,"journal":{"name":"Journal of Materiomics","volume":"19 1","pages":""},"PeriodicalIF":9.4,"publicationDate":"2026-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148690816","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Post-annealing-free solution-processed ultrathin Indium-Gallium-Oxide (IGO) channel for flexible thin film transistors","authors":"Arqum Ali, M.D.Redowan Mahmud Arnob, Sumin Lee, Md Mobaidul Islam, Minsuk Sung, Chang-Min Yoon, In-Hwan Baek, Rino Choi, Jin Jang, Jeong-Hwan Lee","doi":"10.1016/j.jmat.2026.101290","DOIUrl":"https://doi.org/10.1016/j.jmat.2026.101290","url":null,"abstract":"Solution-processed oxide semiconductors are promising for low-cost, large-area flexible electronics. However, conventional multi-step deposition and prolonged thermal annealing reduce throughput. In addition, the uncontrolled accumulation of precursors leads to nonuniform thickness, hindering ultrathin channel formation. Unlike traditional methods, spray pyrolysis not only enables post-annealing-free in situ growth but also inherently limits precursor supply through droplet-by-droplet delivery, enabling quasi-ALD-like self-limited growth for precise thickness control. Here, we demonstrate post-annealing-free ultrathin InGaO channels <ce:italic>via</ce:italic> spray pyrolysis at 300 °C. X-ray photoelectron spectroscopy and transmission electron microscopy confirm a chemically homogeneous ∼5 nm InGaO layer free of organic residues. The resulting thin-film transistors exhibit hysteresis-free operation, a high mobility of (54.98 ± 3.32) cm<ce:sup loc=\"post\">2</ce:sup>⸱V<ce:sup loc=\"post\">–1</ce:sup>⸱s<ce:sup loc=\"post\">–1</ce:sup>, an <ce:italic>I</ce:italic><ce:inf loc=\"post\">ON</ce:inf><ce:italic>/I</ce:italic><ce:inf loc=\"post\">OFF</ce:inf> ratio exceeding 10<ce:sup loc=\"post\">8</ce:sup>, and a subthreshold swing of 126 mV/dec, along with excellent bias-stress stability at low gate voltages (&lt;5 V). Therefore, Spray pyrolysis enables the scalable fabrication of ultrathin oxide channels for flexible electronics.","PeriodicalId":16173,"journal":{"name":"Journal of Materiomics","volume":"72 1","pages":""},"PeriodicalIF":9.4,"publicationDate":"2026-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148690817","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Controlling anisotropic shrinkage in freeze-cast porous Al2O3 through two-step sintering","authors":"Jong-Won Kim, Jong-Won Woo, Sang-Min Hong, Ha-Jin Gu, Ah-Hyeon Park, Young-Jae Kim, Pathan Sharief, Ninad Velhal, Kyoung-Seok Moon, Sang-Chae Jeon","doi":"10.1016/j.jmat.2026.101291","DOIUrl":"https://doi.org/10.1016/j.jmat.2026.101291","url":null,"abstract":"Anisotropic shrinkage during sintering remains a challenge in architectured porous ceramics, yet its mechanistic origin and controllability are not fully understood. Here, the evolution of anisotropic shrinkage in freeze-cast Al<ce:inf loc=\"post\">2</ce:inf>O<ce:inf loc=\"post\">3</ce:inf> is quantitatively analyzed using high-resolution <ce:italic>in-situ</ce:italic> dilatometry combined with microstructural characterization. A clear directional transition is observed during heating: shrinkage is initially dominated by the perpendicular direction at low temperatures, but reverses to the parallel direction above ∼1396 °C, resulting in a final anisotropy of ∼1.44%. This behavior is consistent with the competition between grain-boundary and lattice diffusion, indicating that anisotropic shrinkage depends on the dominant densification mechanism rather than on structural anisotropy alone. By linking curvature-driven capillarity (<ce:italic>γ</ce:italic>/<ce:italic>r</ce:italic>) to direction-dependent mass transport pathways, a mechanistic framework is proposed to explain the emergence of shrinkage anisotropy. Based on this framework, two-step sintering (TSS) is employed to promote grain-boundary diffusion while suppressing lattice diffusion, leading to a near-complete elimination of anisotropic shrinkage (∼0.2%) without sacrificing densification. These findings suggest that shrinkage anisotropy can be effectively regulated through diffusion-pathway control and provide useful guidance for designing sintering strategies to achieve dimensional stability in porous materials.","PeriodicalId":16173,"journal":{"name":"Journal of Materiomics","volume":"52 1","pages":""},"PeriodicalIF":9.4,"publicationDate":"2026-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148690815","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Design-oriented synergistic optimization of piezoelectric coefficient and coercive field in piezoceramics for the electrostrain enhancement","authors":"Peng Li, Jintao Lu, Jianchang Zuo, Hongrui Jia, Shenghui Xie, Jing Wei, Huan Liu, Ziwei Lin, Linghang Wang","doi":"10.1016/j.jmat.2026.101288","DOIUrl":"https://doi.org/10.1016/j.jmat.2026.101288","url":null,"abstract":"","PeriodicalId":16173,"journal":{"name":"Journal of Materiomics","volume":"44 1","pages":""},"PeriodicalIF":9.4,"publicationDate":"2026-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148460273","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Composition and Processing Descriptors Govern Electroceramic Property Prediction: A Multi-Modal Interpretable Framework for BaTiO3-Based Ceramics","authors":"Saman Khalid, Muhammad Faseeh, Murad Ali Khan, Hyejeong Song, Syed Shehryar Ali Naqvi, Hyunseok Ko, Do-Hyeun Kim","doi":"10.1016/j.jmat.2026.101282","DOIUrl":"https://doi.org/10.1016/j.jmat.2026.101282","url":null,"abstract":"","PeriodicalId":16173,"journal":{"name":"Journal of Materiomics","volume":"34 1","pages":""},"PeriodicalIF":9.4,"publicationDate":"2026-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148460280","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}