材料科学最新文献

{"title":"Commensurate Magnetic Structures in ThCr2Si2-Type Materials: A New Symmetry-Based Classification Scheme and Prediction of Emergent Phenomena","authors":"A.M. Bartashevich, S.V. Streltsov, E.G. Gerasimov, M.A. Semkin, A.F. Gubkin, A.N. Pirogov, N.V. Mushnikov, P.B. Terentev, M.I. Bartashevich","doi":"10.1016/j.mtphys.2025.101905","DOIUrl":"https://doi.org/10.1016/j.mtphys.2025.101905","url":null,"abstract":"<h3>RM</h3>₂<em>X</em>₂ (<em>R</em> – is a rare-earth metal or K, Ca, Ba and others; <em>M</em> – is a 3<em>d</em>-, 4<em>d</em>-, 5<em>d</em>-transition metal; <em>X</em> – is Si, Ge, P, As and others) materials with the ThCr₂Si₂-type crystal structure exhibit a remarkable diversity of magnetic structures and phase transitions. We perform a comprehensive representational analysis of commensurate magnetic structures and propose a new classification scheme based on symmetry consideration. Our analysis demonstrates that all previously reported commensurate magnetic structures in these materials conform to this scheme. Furthermore, it allows us to suggest novel magnetic structures for unexplored <em>RM</em>₂<em>X</em>₂ compounds, identify altermagnets among them and predict several emergent phenomena in these materials such as anomalous Hall and Nernst effects and transverse piezoelectric effect.","PeriodicalId":18253,"journal":{"name":"Materials Today Physics","volume":"25 1","pages":""},"PeriodicalIF":11.5,"publicationDate":"2025-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145314678","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}

{"title":"Electrochemical characterization and model investigation of BaZr0.625Ce0.2Y0.175O3-δ based proton conductive ceramic cells","authors":"Martina Marasi, Alberto Cammarata, Giovanna Massobrio, Paolo Colbertaldo, Stefano Campanari, Alessandro Donazzi","doi":"10.1016/j.electacta.2025.147581","DOIUrl":"https://doi.org/10.1016/j.electacta.2025.147581","url":null,"abstract":"In this work, we study the electrochemical properties of BaZr_0.625Ce_0.2Y_0.175O_3-δ (BZCY62), a perovskite oxide applied as electrolyte of proton-conductive ceramic electrolysis cells (PCECs). To investigate the conductivity behavior, electrochemical impedance spectroscopy measurements were performed between 400°C and 600°C at varying molar fractions of O₂ (21-2%), H₂O (35-0.1%), and H₂. The beneficial effect of H₂O on the BZCY62 conductivity emerged (at 600°C, from 0.9 mS cm⁻¹ at 0.1% H₂O to 7.6 mS cm⁻¹ at 35% H₂O) together with the occurrence of a saturation threshold. An equilibrium model was developed to predict the conductivities of the main charge carriers (protons, polarons, and oxygen vacancies). The model included reactions of hydration, polaron formation and consumption via interaction with H₂, and allowed to analyze the conductivity experiments and extract relevant thermodynamic and transport parameters, finding 2.12 × 10⁻⁶ cm² s⁻¹ protons diffusivity at 600°C. Integration of the results of thermogravimetric analyses was required to determine the hydration properties of BZCY62. Electrolyte-supported and electrode-supported button PCECs based on BZCY62 were manufactured for the first time, and tested in steam electrolysis between 500°C and 600°C. The PCECs mounted Ni-BZCY62 fuel electrodes, and BLC-BZCY62 (Ba_0.5La_0.5CoO_3-δ) oxygen electrodes, and were tested with current/voltage and impedance curves by supplying steam/air mixtures up to 30/70 mol/mol and H₂/N₂ mixtures up to 50/50 mol/mol. The electrode-supported PCEC reached 413 mA cm⁻² at 1.4 V and 600°C, in 6% humidified air. Significant impact of the adverse p-type conductivity of BZCY62 on OCV and cell’s performance as a function of the electrolyte thickness was observed.","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"10 1","pages":""},"PeriodicalIF":6.6,"publicationDate":"2025-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145314692","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Simple Detection of Imperfect Charge Extraction at Contacts – Application to Perovskite Solar Cells","authors":"Kurt Taretto, Herman Heffner, Jose Roberto Bautista‐Quijano, Matías Córdoba, Enzo Olguín, Agustín Bou, Yitian Du, Boris Rivkin, Yana Vaynzof","doi":"10.1002/aenm.202504734","DOIUrl":"https://doi.org/10.1002/aenm.202504734","url":null,"abstract":"Understanding and quantifying charge collection at interfaces is essential for optimizing solar cell performance, particularly as interfacial losses increasingly limit device efficiency. Despite their importance, interfacial collection efficiencies are difficult to estimate directly from standard measurements. Here, a novel analytical method is presented to calculate optoelectronic parameters based on the internal quantum efficiency (IQE) at the weak and strong absorption regimes. This approach allows to determine meaningful physical parameters such as the average and front‐surface collection efficiencies, revealing imperfect carrier collection in perovskite solar cells. By applying the method to devices with and without an electron transport layer, clear differences in interfacial extraction efficiency are revealed, showcasing the method's utility. The results suggest that the total collection cannot be described by simple multiplicative or additive electron and hole collection models, but rather reflects a more nuanced interplay governed by extraction velocities. The proposed methodology offers rapid evaluation of device interfaces without relying on transient techniques or traditional IQE models in which perfect carrier extraction is assumed.","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"27 1","pages":""},"PeriodicalIF":27.8,"publicationDate":"2025-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145311014","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":"Phase-engineered multiscale synergistic modulation in amorphous-sheathed crystalline electrocatalysts for bifunctional water splitting","authors":"Zhichuan Yang, Min Gao, Baoxia Hou, Xintong Li, Yu Liu","doi":"10.1016/j.apsusc.2025.164927","DOIUrl":"https://doi.org/10.1016/j.apsusc.2025.164927","url":null,"abstract":"Interfacial engineering holds great potential for water electrolysis catalysts, but the precise manipulation of interfacial electronic configurations and the maintenance of structural integrity remain a formidable challenge. Herein, we propose an innovative synthetic strategy to prepare nanorod array materials with an amorphous/crystalline core–shell structure (CoPA_-0.5@CuO_-300) through a simple and mild process. The resulting materials exhibited excellent electrocatalytic properties and significantly accelerated the kinetics of the reaction. Through rigorous experimental characterization and theoretical calculations, we elucidated three synergistic mechanisms: (1) the electronic reconfiguration of the non-homogeneous interfaces effectively reduces the reaction energy barriers; (2) The nanorod array structure significantly enhances the electrochemically active surface area, thereby providing a greater number of catalytic sites; and (3) the amorphous outer layer, due to its disordered structure, facilitates the adsorption/ desorption. By leveraging this synergistic effect, CoPA_-0.5@CuO_-300 demonstrated outstanding electrocatalytic performance under 1 M KOH conditions, achieving Oxygen evolution reaction (OER) and Hydrogen evolution reaction (HER) overpotentials of only 159 mV and 119 mV, respectively, at a current density of 10 mA cm⁻². Moreover, the catalyst retained over 98 % of its initial activity after 60 h of continuous operation. This work presents an innovative structural design approach that offers a novel pathway for developing highly efficient and durable non-homogeneous interfacial electrocatalysts.","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"131 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145311274","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}

{"title":"Multiscale Interfacial Confined Locking from Nano to Macro Enables Strain Insensitivity in Epidermal Electronic Devices","authors":"Cuiyuan Liang, Ming Zhu, Yanguang Chen, Gongwei Tian, Xiuli Dong, Jing Sun, Peng Wang, Hua Liu, Shumin Niu, Yan Liu, Zhiyuan Liu, Xiaodong Chen, Dianpeng Qi","doi":"10.1002/adma.202506843","DOIUrl":"https://doi.org/10.1002/adma.202506843","url":null,"abstract":"Stable electrical conductivity in epidermal bioelectronics is essential for accurate health monitoring of humans. Yet, the poor adhesion between active conductive materials and elastic substrate leads to conductivity issues during deformation. Here, a multiscale interfacial confined locking strategy is proposed that combines molecular entanglement between the conductive polymer and the substrate with physical confinement within the electrospun membrane pores. To date, multiscale interfacial confined locking structures show the best interfacial adhesion strength (9.48 MPa) compared to previous works. Such structures benefit from a ≈13.9 times interface adhesion improvement over those without this design. For the first time, multiscale interfacial confined locking structures are prepared by in situ polymerization and swelling to enhance the interfacial adhesion strength, and the method can be extended to different substrates (e.g., polyurethane). The high adhesion promotes the wavy and wrinkled microstructure of the nanomesh film, which enables it to maintain a near‐constant resistance under tensile strain (≈200%). The prepared strain‐insensitive conductive film has been successfully applied to epidermal bioelectronics (e.g., sensor and bioelectrode).","PeriodicalId":114,"journal":{"name":"Advanced Materials","volume":"121 1","pages":""},"PeriodicalIF":29.4,"publicationDate":"2025-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145311316","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":"Printable Boron Nitride–Liquid Metal Hybrid Thermal Interface Materials for Advanced Electronics","authors":"Yixuan Jiang, Hyunwoo Bark, Peiwen Huang, Tan Hu, Yun Li, Pooi See Lee","doi":"10.1021/acsami.5c15539","DOIUrl":"https://doi.org/10.1021/acsami.5c15539","url":null,"abstract":"Efficient thermal management and mechanical flexibility are crucial for modern electronic devices, where compact designs and high power densities generate substantial heat, demanding materials with both high efficiency and excellent conformability. Herein, a hybrid thermal interface material (TIM) exhibiting high thermal conductivity is developed by integrating two-dimensional boron nitride nanosheets (BNNS) and liquid metal (LM) nanoparticles as thermally conductive fillers into a photocurable polydimethylsiloxane (PDMS) matrix. Interfacial engineering of the fillers promotes uniform dispersion and forms a continuous thermal network, enhancing heat transfer while preserving softness. Compared to conventional BN-based 3D-printable TIMs, this hybrid system offers high thermal conductivity and an ultralow Young’s modulus (0.07 MPa), enabling superior conformability on complex surfaces and minimizing thermal contact resistance. The composite also maintains excellent electrical insulation and mechanical stability under repeated deformation, ensuring long-term reliability. Demonstrated in LEDs, batteries, and flexible thermoelectric devices, the BN-LM TIM significantly improves heat dissipation and device performance. This work offers a new strategy that combines optimized filler interactions with DLP 3D printing, bridging efficient heat transport with structural adaptability to advance thermal management in next-generation flexible electronics.","PeriodicalId":5,"journal":{"name":"ACS Applied Materials & Interfaces","volume":"27 1","pages":""},"PeriodicalIF":9.5,"publicationDate":"2025-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145311654","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}

{"title":"High-Entropy Engineered (Bi0.2Na0.2Ba0.2K0.2La0.2)TiO3-xCa(Hf0.7Zr0.3)O3 Lead-Free Ceramics for Superior Energy Storage Performance.","authors":"Xiangluo Miao,Run Jing,Shibang Zhang,Pengfei Li,Jiayu Luo,Aihua Zhang,Changan Wang,Chung Ming Leung,Min Zeng","doi":"10.1021/acsami.5c10550","DOIUrl":"https://doi.org/10.1021/acsami.5c10550","url":null,"abstract":"Environmentally friendly dielectric ceramics with high energy storage are indispensable for advanced pulsed power capacitors, primarily due to their outstanding power density. Nevertheless, the relatively low energy storage performance (ESP) of these ceramics continues to limit their broader applications. Here, a series of lead-free (Bi0.2Na0.2Ba0.2K0.2La0.2)TiO3-xCa(Hf0.7Zr0.3)O3 high-entropy ceramics (abbreviated as BNBKLT-xCHZ HECs) was prepared based on a synergistic high-entropy design, aiming to achieve enhanced ESP. Remarkably, BNBKLT-0.15CHZ ceramics characterized by high configurational entropy (ΔSconfig ≈ 2.16 R) exhibit an ultrahigh recoverable energy density (Wrec) of ∼6.77 J/cm3 and an efficiency (η) of ∼86%. The enhanced ΔSconfig, as a consequence of introducing CHZ, results in a reduction of grain size from ∼0.89 μm at x = 0.00 to ∼0.32 μm at x = 0.20, along with an enhancement of the breakdown strength (BDS) from ∼200 kV/cm at x = 0.00 to ∼485 kV/cm at x = 0.15. Moreover, excellent frequency stability (<3.2%, ranging from 10 to 500 Hz), temperature stability (<6.4%, ranging from 25 to 140 °C), fatigue resistance (<4.0%, ranging from 1 to 105 cycles) and ultrafast discharge time (∼79 ns) are obtained in the optimal composition. The results demonstrate that the BNBKLT-0.15CHZ HEC has considerable potential for utilization in dielectric energy storage capacitors.","PeriodicalId":5,"journal":{"name":"ACS Applied Materials & Interfaces","volume":"102 1","pages":""},"PeriodicalIF":9.5,"publicationDate":"2025-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145314511","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}

{"title":"Self-healing coatings on Mg-Li alloy using pH-responsive sepiolite microcontainer loaded with corrosion inhibitors","authors":"Jirui Ma, Xiaopeng Lu, Yuxin Zhou, Zhengrong Ai, Yuquan Hao, Qiang Wang, Andrey S. Gnedenkov, Fuhui Wang","doi":"10.1016/j.jma.2025.09.011","DOIUrl":"https://doi.org/10.1016/j.jma.2025.09.011","url":null,"abstract":"To enhance the corrosion resistance of Mg-Li alloy, a composite coating system integrating plasma electrolytic oxidation (PEO) with sol-gel sealing treatment is developed. Two functionalized sepiolite microcontainers (sepiolite-Ce and sepiolite-BA) are constructed by loading cerium ions (Ce³⁺) via ion exchange and encapsulating barbituric acid (BA) through low-pressure impregnation. The microcontainers are subsequently incorporated into the coating surface through controlled sol-gel deposition process. UV-Vis and ICP-OES analyses reveal that both functionalized sepiolite microcontainers exhibited pH-responsive release characteristics under alkaline conditions. Electrochemical impedance spectroscopy (EIS) tests demonstrate that the inhibitor-containing composite coating has excellent long-term corrosion resistance and self-healing performance. After 240 h of immersion in a 0.5 wt.% NaCl solution, the low-frequency impedance modulus of the composite coating is four orders of magnitude higher than that of the pristine coating.","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"88 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145314674","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":"Interfacial Interaction and Stress Engineering for Enhancing Electrical Conductivity of Graphene/Copper Composites","authors":"Zhihao Zheng, Wentao Yuan, Yiling Huang, Yifeng Zhao, Jiayao Chen, Xuefu Zhang, Yi Zeng, Zhiyuan Shi, Qingkai Yu, Xiaoming Xie","doi":"10.1016/j.mtphys.2025.101895","DOIUrl":"https://doi.org/10.1016/j.mtphys.2025.101895","url":null,"abstract":"Copper with electrical conductivity (EC) exceeding 100% International Annealed Copper Standard (IACS) is in high demand for power and microelectronic applications. Graphene/copper composites have emerged as a promising solution to meet this demand. However, the mechanism underlying the EC enhancement remains a subject of debate, which poses a challenge to their scalable production. In this study, we fabricated graphene/copper composite through plasma-enhanced chemical vapor deposition (PECVD) and demonstrated the enhanced EC up to 109.4% IACS by controlling the interfacial interaction between graphene and copper. Electron backscatter diffraction (EBSD) reveals directional residual stresses in the copper substrate, while high-resolution transmission electron microscopy (HRTEM) and geometric phase analysis (GPA) resolve a near-surface lattice-distortion layer beneath a few layers continuous graphene. By tuning hydrogenation defects through RF power, we modulate interfacial adhesion, the induced stress state, and the EC enhancement. The results establish interfacial-stress engineering as a practical route to copper conductors surpassing 100% IACS.","PeriodicalId":18253,"journal":{"name":"Materials Today Physics","volume":"20 1","pages":""},"PeriodicalIF":11.5,"publicationDate":"2025-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145314677","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}

{"title":"Plug-and-Play with 2.5D Artifact Reduction Prior for Fast and Accurate Industrial Computed Tomography Reconstruction","authors":"Haley Duba-Sullivan,&nbsp;Aniket Pramanik,&nbsp;Venkatakrishnan Singanallur,&nbsp;Amirkoushyar Ziabari","doi":"10.1007/s10921-025-01239-0","DOIUrl":"10.1007/s10921-025-01239-0","url":null,"abstract":"<div><p>Cone-beam X-ray computed tomography (XCT) is an essential imaging technique for generating 3D reconstructions of internal structures, with applications ranging from medical to industrial imaging. Producing high-quality reconstructions typically requires many X-ray measurements; this process can be slow and expensive, especially for dense materials. Recent work incorporating artifact reduction priors within a plug-and-play (PnP) reconstruction framework has shown promising results in improving image quality from sparse-view XCT scans while enhancing the generalizability of deep learning-based solutions. However, this method uses a 2D convolutional neural network (CNN) for artifact reduction, which captures only slice-independent information from the 3D reconstruction, limiting performance. In this paper, we propose a PnP reconstruction method that uses a 2.5D artifact reduction CNN as the prior. This approach leverages inter-slice information from adjacent slices, capturing richer spatial context while remaining computationally efficient. We show that this 2.5D prior not only improves the quality of reconstructions but also enables the model to directly suppress commonly occurring XCT artifacts (such as beam hardening), eliminating the need for artifact correction pre-processing. Experiments on both experimental and synthetic cone-beam XCT data demonstrate that the proposed method better preserves fine structural details, such as pore size and shape, leading to more accurate defect detection compared to 2D priors. In particular, we demonstrate strong performance on experimental XCT data using a 2.5D artifact reduction prior trained entirely on simulated scans, highlighting the proposed method’s ability to generalize across domains.</p></div>","PeriodicalId":655,"journal":{"name":"Journal of Nondestructive Evaluation","volume":"44 4","pages":""},"PeriodicalIF":2.4,"publicationDate":"2025-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10921-025-01239-0.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145316544","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}