Journal of Alloys and Compounds最新文献

{"title":"Stochastic domain nucleation across the insulator-metal transition of isolated VO2 nanoparticles","authors":"P.K. Ojha, G. Nemeth, D. Nair, P. Kumar, R. Banerjee, F. Borondics, S.K. Mishra","doi":"10.1016/j.jallcom.2025.184190","DOIUrl":"https://doi.org/10.1016/j.jallcom.2025.184190","url":null,"abstract":"Vanadium dioxide (VO₂) has emerged as one of the most studied smart optical materials due to its reversible insulator-metal transition (IMT) that manifests morphology and size-dependent optical properties. Employing synchrotron-based nano-Fourier transform infrared spectroscopy (nano-FTIR) and scattering-type scanning near-field optical microscopy (s-SNOM), we report the IMT of isolated VO₂ nanoparticles (NPs). Thermal-induced random domain nucleation and metallization of V⁴⁺ (3d¹) correlated electrons in isolated VO₂ NPs are reported. Nano-FTIR as a function of temperature provides site-specific insights into VO₂ NPs by recording local amplitude and phase spectra that directly correlate the metallization of VO₂ NPs with their optical absorption characteristics. These spectra also indicate the phonon modes of the monoclinic phase of VO₂ (~680-750<!-- --> <!-- -->cm⁻¹) that establish the distinct characteristics of electron-phonon interaction. Temperature-dependent infrared nano-imaging of VO₂ NPs (55-250<!-- --> <!-- -->nm) reveals a different transition behaviour for individual NPs rather than an average transition temperature (T_c). The underlying microscopic mechanisms of the phase transition in VO₂ NPs and their size-dependent metallization are discussed within the framework of classical nucleation theory and a combined Peierls and Mott thermodynamic phenomenological model. The present observations offer profound implications for designing sensing devices based on these nanoscale elements.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"47 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2025-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145229308","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":"Achieving Triple Functionalities in Polyurethane Coatings: The Role of Ti3C2Tx-Mn2O3@Co3O4 Composite Fillers","authors":"Xu Yuan, Wei Wang, Lin Cao, Yang Han","doi":"10.1016/j.jallcom.2025.184232","DOIUrl":"https://doi.org/10.1016/j.jallcom.2025.184232","url":null,"abstract":"This study reports on a multifunctional composite coating integrating noise reduction, corrosion resistance, and self-healing properties. A Ti₃C₂T_x-Mn₂O₃@Co₃O₄ ternary heterojunction filler was successfully prepared via ultrasound-assisted hydrothermal method. Owing to its semiconductor characteristics and ternary heterostructure, the composite filler exhibits an exceptional photothermal conversion performance, reaching 117.3 °C under 1<!-- --> <!-- -->W·cm⁻² NIR irradiation. The composite filler was incorporated into a polyurethane matrix to fabricate the functional coating. The composite coating demonstrates outstanding sound absorption performance, with coefficients exceeding 0.6 at frequencies of 6000<!-- --> <!-- -->Hz and above. Remarkably, it simultaneously achieves approximately 38<!-- --> <!-- -->dB attenuation of ambient noise under standard testing conditions. Finite element method (FEM) simulations confirm that even the coating with a 2.93% damage ratio achieves a 16.7% reduction in ambient noise under simulated marine conditions. The Ti₃C₂T_x-Mn₂O₃@Co₃O₄ composite filler imparts superior corrosion resistance to the composite coating through its synergistic labyrinth effect and defect filling capabilities. The composite coating maintains an impedance modulus of 3.32 × 10⁹ Ω·cm² after 50 days immersion in 3.5<!-- --> <!-- -->wt.% NaCl solution. The composite coating also exhibits a rapid self-healing ability within 100<!-- --> <!-- -->s under 1<!-- --> <!-- -->W·cm⁻² NIR irradiation through photothermally activated dynamic covalent bond reconfiguration. After multiple damaging-healing cycles, it retains up to 37<!-- --> <!-- -->dB noise dissipation capacity and |Z|_0.01Hz up to 1.12×10⁹ Ω·cm². With its outstanding noise reduction, corrosion protection, and autonomous damage healing capabilities, this coating shows a tremendous application potential in marine equipment for noise control and corrosion prevention.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"4 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2025-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145229326","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":"Effect of Mg and Li content on the precipitation behavior, mechanical properties and corrosion resistance of cast Al-Li-Mg-Cu alloys","authors":"Wenyuan Wang, Zepeng Zha, Shuai Zhang, Dongshen Huo, Guoying Sui, Chao Chen, Zhenqiang Wang","doi":"10.1016/j.jallcom.2025.184208","DOIUrl":"https://doi.org/10.1016/j.jallcom.2025.184208","url":null,"abstract":"This study investigates the microstructure evolution, precipitation, mechanical properties, and corrosion resistance of two cast Al-Li-Mg-Cu alloys (1.3Li-4.8Mg and 1.8Li-6.6Mg) during artificial aging at 160 ºC. Simultaneous increases in Mg and Li contents significantly refine the as-cast structure and influence element segregation at grain boundaries. The 1.8Li-6.6Mg alloy demonstrates enhanced precipitation of δ′ (Al₃Li) and β (Al₃Mg₂) phases, leading to superior hardness and strength but reduced ductility due to widened precipitate-free zones and grain boundary precipitation. Conversely, the 1.3Li-4.8Mg alloy features competitive precipitation of T₁ (Al₂CuLi) and S′ (Al₂CuMg) phases, enhancing strength during peak aging but reducing corrosion resistance due to preferential anodic dissolution. The study highlights composition-dependent corrosion mechanisms, driven by potential gradients and phase distribution, offering valuable guidance for optimizing Al-Li-Mg-Cu alloys for aerospace and structural applications.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"115 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2025-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145229309","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":"Field-Free Spin-Orbit Torque Switching Enabled by Interlayer Dzyaloshinskii-Moriya Interaction in Ferrimagnetic Multilayers","authors":"","doi":"10.1016/j.jallcom.2025.184226","DOIUrl":"https://doi.org/10.1016/j.jallcom.2025.184226","url":null,"abstract":"Field-free spin–orbit torque (SOT) switching is a key technique for energy-efficient spintronic devices, yet its realization in perpendicular magnetic…","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"6 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2025-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145229325","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":"Al2O3 barrier layer for the synthesis of high-quality thermochromic SmNiO3 thin films annealed in air","authors":"Pierre-Antoine Tostivint, Arthur Tausch, Stéphanie Bruyère, Jérémie Drévillon, Fabien Capon","doi":"10.1016/j.jallcom.2025.184146","DOIUrl":"https://doi.org/10.1016/j.jallcom.2025.184146","url":null,"abstract":"This study presents a soft synthesis method for producing thin films of SmNiO&lt;span&gt;&lt;span style=\"\"&gt;&lt;/span&gt;&lt;span data-mathml='&lt;math xmlns=\"http://www.w3.org/1998/Math/MathML\"&gt;&lt;msub is=\"true\"&gt;&lt;mrow is=\"true\" /&gt;&lt;mrow is=\"true\"&gt;&lt;mn is=\"true\"&gt;3&lt;/mn&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;/math&gt;' role=\"presentation\" style=\"font-size: 90%; display: inline-block; position: relative;\" tabindex=\"0\"&gt;&lt;svg aria-hidden=\"true\" focusable=\"false\" height=\"1.509ex\" role=\"img\" style=\"vertical-align: -0.582ex;\" viewbox=\"0 -399.4 453.9 649.8\" width=\"1.054ex\" xmlns:xlink=\"http://www.w3.org/1999/xlink\"&gt;&lt;g fill=\"currentColor\" stroke=\"currentColor\" stroke-width=\"0\" transform=\"matrix(1 0 0 -1 0 0)\"&gt;&lt;g is=\"true\"&gt;&lt;g is=\"true\"&gt;&lt;/g&gt;&lt;g is=\"true\" transform=\"translate(0,-150)\"&gt;&lt;g is=\"true\"&gt;&lt;use transform=\"scale(0.707)\" xlink:href=\"#MJMAIN-33\"&gt;&lt;/use&gt;&lt;/g&gt;&lt;/g&gt;&lt;/g&gt;&lt;/g&gt;&lt;/svg&gt;&lt;span role=\"presentation\"&gt;&lt;math xmlns=\"http://www.w3.org/1998/Math/MathML\"&gt;&lt;msub is=\"true\"&gt;&lt;mrow is=\"true\"&gt;&lt;/mrow&gt;&lt;mrow is=\"true\"&gt;&lt;mn is=\"true\"&gt;3&lt;/mn&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;/math&gt;&lt;/span&gt;&lt;/span&gt;&lt;script type=\"math/mml\"&gt;&lt;math&gt;&lt;msub is=\"true\"&gt;&lt;mrow is=\"true\"&gt;&lt;/mrow&gt;&lt;mrow is=\"true\"&gt;&lt;mn is=\"true\"&gt;3&lt;/mn&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;/math&gt;&lt;/script&gt;&lt;/span&gt; with enhanced thermochromic properties after annealing in air. The films were fabricated using magnetron co-sputtering under reactive atmosphere, followed by a lowtemperature annealing process at 550 &lt;span&gt;&lt;span style=\"\"&gt;&lt;/span&gt;&lt;span data-mathml='&lt;math xmlns=\"http://www.w3.org/1998/Math/MathML\"&gt;&lt;mrow is=\"true\"&gt;&lt;mo is=\"true\"&gt;&amp;#xB0;&lt;/mo&gt;&lt;mi mathvariant=\"normal\" is=\"true\"&gt;C&lt;/mi&gt;&lt;/mrow&gt;&lt;/math&gt;' role=\"presentation\" style=\"font-size: 90%; display: inline-block; position: relative;\" tabindex=\"0\"&gt;&lt;svg aria-hidden=\"true\" focusable=\"false\" height=\"2.086ex\" role=\"img\" style=\"vertical-align: -0.235ex;\" viewbox=\"0 -796.9 1223 898.2\" width=\"2.841ex\" xmlns:xlink=\"http://www.w3.org/1999/xlink\"&gt;&lt;g fill=\"currentColor\" stroke=\"currentColor\" stroke-width=\"0\" transform=\"matrix(1 0 0 -1 0 0)\"&gt;&lt;g is=\"true\"&gt;&lt;g is=\"true\"&gt;&lt;use xlink:href=\"#MJMAIN-B0\"&gt;&lt;/use&gt;&lt;/g&gt;&lt;g is=\"true\" transform=\"translate(500,0)\"&gt;&lt;use xlink:href=\"#MJMAIN-43\"&gt;&lt;/use&gt;&lt;/g&gt;&lt;/g&gt;&lt;/g&gt;&lt;/svg&gt;&lt;span role=\"presentation\"&gt;&lt;math xmlns=\"http://www.w3.org/1998/Math/MathML\"&gt;&lt;mrow is=\"true\"&gt;&lt;mo is=\"true\"&gt;°&lt;/mo&gt;&lt;mi is=\"true\" mathvariant=\"normal\"&gt;C&lt;/mi&gt;&lt;/mrow&gt;&lt;/math&gt;&lt;/span&gt;&lt;/span&gt;&lt;script type=\"math/mml\"&gt;&lt;math&gt;&lt;mrow is=\"true\"&gt;&lt;mo is=\"true\"&gt;°&lt;/mo&gt;&lt;mi mathvariant=\"normal\" is=\"true\"&gt;C&lt;/mi&gt;&lt;/mrow&gt;&lt;/math&gt;&lt;/script&gt;&lt;/span&gt; for 30 min to crystallize the thermochromic perovskite phase. Structural and chemical analyses, including X-ray diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM), confirmed the successful formation of the orthorhombic SmNiO&lt;span&gt;&lt;span style=\"\"&gt;&lt;/span&gt;&lt;span data-mathml='&lt;math xmlns=\"http://www.w3.org/1998/Math/MathML\"&gt;&lt;msub is=\"true\"&gt;&lt;mrow is=\"true\" /&gt;&lt;mrow is=\"true\"&gt;&lt;mn is=\"true\"&gt;3&lt;/mn&gt;&lt;/mrow&","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"14 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2025-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145229328","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 structural origins of stress annealing tailored magnetic properties in Fe-based nanocrystalline cores","authors":"Jianqiang Zhang ,&nbsp;Yanjun Qin ,&nbsp;Yuxiang Zhao ,&nbsp;Jianzhen An ,&nbsp;Xiangbin Li ,&nbsp;Ke Wang ,&nbsp;Wenqiang Dang ,&nbsp;Xiaqing Zhang ,&nbsp;Xuefu Kang ,&nbsp;Wenbo Gou ,&nbsp;Xiaobin Liu ,&nbsp;Xiaozhen Fan ,&nbsp;Yunzhang Fang","doi":"10.1016/j.jallcom.2025.184231","DOIUrl":"10.1016/j.jallcom.2025.184231","url":null,"abstract":"<div><div>Fe-based nanocrystalline alloys (FNAs) are critical for high-frequency electronics, yet precise magnetic property control remains challenging. Here, a continuous stress annealing (CSA) technique is developed to regulate AC/DC soft magnetic properties of Fe-based nanocrystalline cores (FNCs) via thermomechanical field coupling (TFC). A non-monotonic stress-property relationship is revealed: coercivity (<em>H</em>_c), magnetic anisotropy constant (<em>K</em>), and AC loss (<em>P</em>_s) decrease first and then increase with stress, while permeability (<em>μ</em>_e) exhibits the opposite trend. There exists an optimal state at σ≈ 28.6 MPa, where <em>H</em>_c= 5.4 A/m, <em>μ</em>_e= 6532.5, <em>P</em>_s= 401.2 W/kg (at 300 mT, 200 kHz). To unveil the structural origins, a multiscale characterization approach is employed, integrating atomic force microscopy (AFM), magnetic force microscopy (MFM), <em>in-situ</em> synchrotron radiation X-ray diffraction (SRXRD), and high-resolution transmission electron microscopy (HRTEM). The findings show that low-stress annealing (LSA, σ&lt;28.6 MPa) yields isotropic nanocrystalline distribution and irregular strip-like domains, whereas high-stress annealing (HSA, σ &gt; 28.6 MPa) induces lamellar domains, anisotropic nanocrystalline distribution and lattice distortion, and reduced short-range order (SRO) clusters (from 18.15 vol% to 15.62 vol%). We propose a competitive coupling model where magnetic anisotropy (MA) arises from mesoscopic nanocrystalline distribution (MND), microscopic lattice distortion (MLD), and atomic-scale SRO clusters, and optimal properties at σ≈ 28.6 MPa stem from the synergy of MND and MLD in suppressing atomic-scale SRO clusters. This work establishes a quantitative multiscale framework for designing high-performance soft magnetic materials.</div></div>","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"1043 ","pages":"Article 184231"},"PeriodicalIF":6.3,"publicationDate":"2025-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145229751","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":"Magnetic Metacomposites with Tunable ε'-Negative Response Achieved by Dual-Functional Phase Paradigm","authors":"Ruoting Li, Junti Wang, Shan Chen, Yunpeng Qu, Zhenxin He","doi":"10.1016/j.jallcom.2025.184218","DOIUrl":"https://doi.org/10.1016/j.jallcom.2025.184218","url":null,"abstract":"Metacomposites have achieved a controllable <em>ε'</em>-negative (<em>ε'</em> &lt; 0) response in the radio frequency band, and thus have shown attractive application prospects in fields such as antenna design, radar stealth, new filters, and sensors. Therefore, in this work, the dual-functional phase metacomposites was developed based on the composite design strategy of conductors/insulators. In it, carbon nanotube-carbon black (CNT-CB) prepared by electrostatic self-assembly process was used as the conductor phase, and magnetic ferric oxide (Fe₃O₄) prepared by in-situ reduction was used as the insulating phase. An <em>ε'</em>-negative response in the 20 MHz-1 GHz region was successfully achieved, and the <em>ε'</em> value has been precisely regulated at the order of 10³. This is because the successful construction of the three-dimensional (3D) CNT-CB network enables the metacomposites to achieve the plasmonic oscillation effect, which is regulated by the effective carrier concentration and the damping effect of the Fe₃O₄ insulator. We analyzed the structure-function relationship of the metacomposites through the electrical percolation model and equivalent circuit analysis. Finally, we investigated the response characteristics of extremely weak <em>ε'</em>-negative <em>(</em>-10 &lt; <em>ε'</em> &lt; 0) metacomposites at 1<!-- --> <!-- -->GHz frequency to electromagnetic waves through 3D radar scattering simulation and thermal infrared imaging. Our work will provide a new design paradigm of magnetic metacomposites based on dual-functional phases and offer a new perspective for in-depth clarification of the precise regulation mechanism of <em>ε'</em>-negative response.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"32 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2025-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145229329","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-throughput investigation of diffusion properties in FCC Cu-Ni-Al-(Si, Fe) alloys and application to solidification and homogenization simulations","authors":"Yankun Li, Xinrong Zhao, Zhi Zhang, Ying Tang, Lijun Zhang, Xiang Zhang, Chunnian He, Naiqin Zhao","doi":"10.1016/j.jallcom.2025.184203","DOIUrl":"https://doi.org/10.1016/j.jallcom.2025.184203","url":null,"abstract":"Four groups of Cu-Ni-Al-Si and six groups of Cu-Ni-Al-Fe diffusion couples were prepared, and the concentration distributions within the diffusion layers formed between 1173<!-- --> <!-- -->K and 1273<!-- --> <!-- -->K were measured. Using the obtained concentration profiles, the interdiffusion coefficients and mobility descriptions for the face-centered cubic (FCC) Cu-Ni-Al-(Si, Fe) systems were determined through the numerical inverse method in a high-throughput manner. The impact of compositions on the interdiffusion coefficients and relative diffusion rates within the specified composition and temperature ranges was analyzed. Subsequently, the established mobility description was utilized to simulate the solidification and homogenization heat treatment processes in Cu-10Ni-3Al (wt.%), Cu-10Ni-3Al-1Fe (wt.%), and Cu-10Ni-3Al-1Si (wt.%) alloys. The simulated concentration distribution of solutes over the dendrites indicated that Ni and Fe exhibited intra-dendrite segregation, while Al and Si demonstrated inter-dendrite segregation. The inclusion of Fe in Cu-10Ni-3Al alloys slightly increased chemical segregation, whereas the introduction of Si led to the formation of the Ni₂Si phase. The addition of Fe had a minimal impact on the annealing times required to eliminate chemical segregation, while the incorporation of Si reduced the annealing times.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"20 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2025-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145226693","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":"Tuning Atomic Diffusion and Carrier Concentration in ITO Films via In-Situ Resistance Monitoring","authors":"Gyuho Lee, Seonghoon Han, Hyeonyu Kim, Sehwan Song, Ju Hyeon Kim, Jinhyun Lee, Jisung Lee, Jong-Seong Bae, Okkyun Seo, Jiayi Tang, Sangmoon Yoon, Chang-woo Cho, Kyeong Tae Kang, Younjung Jo, Sungkyun Park, Dooyong Lee","doi":"10.1016/j.jallcom.2025.184204","DOIUrl":"https://doi.org/10.1016/j.jallcom.2025.184204","url":null,"abstract":"We present a study on tuning atomic diffusion and carrier concentration in Sn-doped In₂O₃ (ITO) films using an <em>in-situ</em> resistance monitoring approach during post-annealing. By varying the annealing ramping rate and gas atmosphere, we decouple the effects of thermal kinetics and chemical environment on the crystallization behavior and electronic properties of amorphous ITO films. Our results reveal that crystallization and densification temperatures are predominantly governed by the ramping rate, while carrier concentration is strongly modulated by the gas atmosphere. Notably, the ITO film annealed in forming gas at low ramping rates exhibits enhanced conductivity and optical transmittance due to the oxygen vacancy-induced electron doping, as confirmed by hard X-ray photoelectron spectroscopy. Activation energies of the atomic diffusion in amorphous ITO films were quantified as 1.07<!-- --> <!-- -->eV and 0.99<!-- --> <!-- -->eV for crystallization and densification, respectively. Our findings introduce a robust, <em>in-situ</em> resistance monitoring strategy for precise control of structural and electronic properties in transparent conducting oxides, offering a scalable methodology for advanced optoelectronic device fabrication.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"5 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2025-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145226694","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":"Structure regulation of Zeolitic Imidazolate Framework-8 functionalized poly-m-phenyleneisophthalamide separator for enhancement on the comprehensive performance of lithium - ion batteries","authors":"Tongtong Zhang, Yingxue Sun, Zan Chen, Cuijia Duan, Claudia Li, Sibudjing Kawi, Yinhui Li","doi":"10.1016/j.jallcom.2025.184211","DOIUrl":"https://doi.org/10.1016/j.jallcom.2025.184211","url":null,"abstract":"Safety issues remain a major barrier to the large-scale application of high-energy-density storage systems. Uneven ion flow can lead to non-uniform lithium deposition and continuous dendrite growth. These problems greatly reduce the lifespan and safety of lithium-ion batteries (LIBs). In this work, a PMIA/ZIF-8 composite separator was fabricated by in-situ growth of zeolitic imidazolate framework-8 (ZIF-8) on the surface of a poly-m-phenyleneisophthalamide (PMIA) separator prepared via non-solvent induced phase separation (NIPS). The PMIA/ZIF-8 separator exhibits outstanding electrolyte affinity (411%) and high ionic conductivity (0.81 mS cm⁻¹), which are 3.2 times and 1.53 times that of the PP separator, respectively. In terms of battery performance, the battery employing the composite separator maintains a discharge capacity of 134.5 mAh g⁻¹ after 200 cycles, significantly outperforming the cell with a PP separator (108.4 mAh g⁻¹). Furthermore, the Li||Li symmetric battery equipped with the PMIA/ZIF-8 separator achieves stable cycling for over 600<!-- --> <!-- -->h at 1<!-- --> <!-- -->mA<!-- --> <!-- -->cm⁻², surpassing the performance of the PP separator (200<!-- --> <!-- -->h). This work offers a feasible strategy for developing highly safe lithium-ion battery separators capable of efficiently inhibiting lithium dendrite growth.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"8 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2025-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145226695","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}