{"title":"Gold nanoflower-functionalized ZnO thin film-based elliptical interdigital MSM structure for the detection of volatile organic compounds associated with breast cancer","authors":"Aniruddh Bahadur Yadav, Shashi Prakash Misra, Sivanath Reddy G.V, Rahul Checker","doi":"10.1016/j.jallcom.2025.180633","DOIUrl":"https://doi.org/10.1016/j.jallcom.2025.180633","url":null,"abstract":"Gold nanoflowers were synthesized in an aqueous solution and incorporated into the sol–gel derived zinc acetate salt precursor based colloidal solution. Five microliters of the colloidal solution, which contains a pure zinc acetate precursor solution and gold nanoflowers, was dropped onto a glass substrate to create a transparent functionalized and pristine ZnO thin film. XPS, XRD,scanning electron microscope and transmission electron microscope analysis revealed a successful functionalization of gold nanoflowers on ZnO. The functionalized ZnO films decorated with gold nanoflowers, when used in an MSM structure, showed excellent sensitivity to isopropyl myristate, a crucial biomarker of breast cancer. UV light was used to improve the sensing properties of the device. In addition to improving the sensing properties, the gold nanoflowers lower the specific contact resistance at the Al/gold nanoflower-functionalized ZnO interface.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"32 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143931128","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":"Three-dimensional P-doped Co8FeS8-Co2P-Fe2P heterogenous nanocatalyst for high-efficiency alkaline hydrogen evolution reaction","authors":"Zhijia Cui, Meiling Liu, Changming Zhang, Zhengdong Ma, Yongjin Zou, Cuili Xiang, Fen Xu, Lixian Sun","doi":"10.1016/j.jallcom.2025.180888","DOIUrl":"10.1016/j.jallcom.2025.180888","url":null,"abstract":"<div><div>The development of durable and highly active electrocatalysts free of precious metals remains a significant challenge in achieving sustainable hydrogen (H<sub>2</sub>) production via water splitting. In this study, we present an innovative three-dimensional (3D) heterogeneous phosphorus-doped bimetallic phosphide electrocatalyst. This catalyst, comprising Co<sub>8</sub>FeS<sub>8</sub>, Co<sub>2</sub>P, and Fe<sub>2</sub>P, is synthesized in situ on a nickel foam (NF) substrate. By constructing a unique 3D composite structure, introducing phosphorus atom doping, and achieving strong interfacial coupling effects between Co<sub>8</sub>FeS<sub>8</sub>, Co<sub>2</sub>P, and Fe<sub>2</sub>P, the charge distribution of the catalyst was optimized while exposing abundant active sites. Additionally, the elevated conductivity and massive surface area of the NF substrate contributed to superior electrocatalytic performance and accelerated hydrogen evolution reaction kinetics. The NF/Co<sub>8</sub>FeS<sub>8</sub>-Co<sub>2</sub>P-Fe<sub>2</sub>P electrode achieved a low overpotential of 61.8 mV at a current density of 10 mA·cm<sup>−2</sup> in a 1.0 M KOH solution. Density functional theory (DFT) calculations further revealed that phosphorus-doped Fe<sub>2</sub>P electrode exhibits an optimal Δ<em>G</em><sub>H*</sub>, facilitating reaction kinetics. The synergistic catalysis of Co<sub>8</sub>FeS<sub>8</sub>, Co<sub>2</sub>P, and Fe<sub>2</sub>P materials significantly enhances the hydrogen generation activity of the Co<sub>8</sub>FeS<sub>8</sub>-Co<sub>2</sub>P-Fe<sub>2</sub>P electrode. This work provides valuable insights into designing and fabricating reliable and effective three-dimensional hybrid electrode materials for advanced electrochemical applications.</div></div>","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"1030 ","pages":"Article 180888"},"PeriodicalIF":5.8,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143931307","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":"Microstructure evolution of fine-grained tungsten coated layer under high temperature for nuclear thermal propulsion","authors":"Guoqiang Wang, Lihua Guo, Feng Zhang, Jun Lin","doi":"10.1016/j.jallcom.2025.180885","DOIUrl":"https://doi.org/10.1016/j.jallcom.2025.180885","url":null,"abstract":"Nuclear thermal propulsion (NTP) is a promising candidate for deep space exploration, with cermet fuel offering safety and efficiency due to advantages like fission product retention, hydrogen compatibility, and high strength. The W coated layers of cermet fuel help minimize fuel loss but must withstand temperatures above 2500<!-- --> <!-- -->K during operation. This study investigates the microstructure and property evolution of W coated layers at high temperatures. Fine-grained W coated layers were prepared using WCl<sub>6</sub> as a precursor, followed by high temperature tests between 1500 and 2300°C. The effects of temperature on phase composition, microstructure, and mechanical properties were analyzed. The (110) crystal plane remained the preferred orientation throughout testing. The grain structure evolved from fine columnar grains to equiaxed grains, and then to large columnar grains, with rapid growth from sub-micron to approximately 20 microns. At elevated temperatures, bubbles formed inside the grains and at the grain boundaries. As the temperature increased, bubble numbers decreased, sizes grew, and bubbles migrated toward the boundaries. At 1900°C, bubbles only existed at grain boundaries, and by 2300°C, bubbles disappeared. As the temperature increased, the relative chlorine (Cl) content and average dislocation density in the W coated layers decreased. The study proposes a mechanism for bubble formation and migration, where Cl impurities in the W coated layer diffuse into defects, forming submicron bubbles. The radial growth of columnar grains causes stress transitions from compressive in the interior to tensile at the exterior, promoting bubble diffusion along grain boundaries toward the surface.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"44 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143927172","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}
Saikumaran Ayyappan, Jennifer S Forrester, Farida Selim, Geoffrey Beausoleil, Djamel Kaoumi
{"title":"Effect of Al addition to the multi-principal elemental AlxCrFeNiCu alloy system in terms of the resulting microstructure and ion irradiation response","authors":"Saikumaran Ayyappan, Jennifer S Forrester, Farida Selim, Geoffrey Beausoleil, Djamel Kaoumi","doi":"10.1016/j.jallcom.2025.180882","DOIUrl":"https://doi.org/10.1016/j.jallcom.2025.180882","url":null,"abstract":"Recently, high-entropy alloys (HEAs) and multi-principal elemental alloys (MPEAs) have attracted attention as potential new structural materials for in-core nuclear reactor applications, thanks to their structural stability and excellent mechanical properties. However, their multi-phase microstructural behavior under irradiation requires further attention, as it is crucial for understanding the irradiation behavior of the alloys. The current work compares the radiation behaviors of the Al<sub>0.3</sub>CrFeCuNi (0.3Al) and Al<sub>0.8</sub>CrFeCuNi (0.8Al) alloys, which were prepared via spark plasma sintering and then irradiated in situ in a transmission electron microscope (TEM) using 1-MeV Kr<sup>+</sup> ions and up to 10 displacements per atom (dpa) at room temperature (RT) and at 300°C. Pre-irradiation characterization of the alloys was performed using x-ray diffraction (XRD) and transmission electron microscopy, revealing the formation of major proportions of (face-centered cubic [FCC] + body-centered cubic [BCC]) phases. A higher Al content spurred transformation from the FCC phase to the BCC phase and sparked the formation of ordered phases. While the alloy containing 0.3Al (FCC) exhibited irradiation-induced ordering at both RT and at 300°C, the 0.8Al alloy showed irradiation-induced disordering of the ordered phases at 300°C. The pre- and post-irradiation transmission electron microscopy experiments evidenced how variations in local chemistry and microstructural features in these MPEAs affect the local response to irradiation (at the nm/µm level). This study provides an overview of how structurally and chemically different phases in MPEAs react when under irradiation, affording crucial knowledge for understanding the irradiation resistance of the alloys.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"28 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143927174","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":"Room-Temperature Synthesis and Photoluminescence Properties of Mn-Doped Cs3ZnBr5 Perovskite","authors":"Mohd Musaib Haidari, Vijay Singh","doi":"10.1016/j.jallcom.2025.180879","DOIUrl":"https://doi.org/10.1016/j.jallcom.2025.180879","url":null,"abstract":"This article presents the synthesis and characterization of Mn-doped Cs<sub>3</sub>ZnBr<sub>5</sub> perovskite nanocrystals via a sol-gel, room-temperature (RT) solution-based method. X-ray diffraction analysis confirmed the successful incorporation of Mn<sup>2+</sup> ions into the Cs<sub>3</sub>ZnBr<sub>5</sub> host lattice by revealing slight shifts with increasing Mn<sup>2+</sup> concentration. Field-emission scanning electron microscopy images revealed the agglomerated nature of the particles and distinct microstructural features that evolved with the Mn<sup>2+</sup> content. Photoluminescence measurements showed strong green emission (520-535<!-- --> <!-- -->nm) associated with Mn<sup>2+</sup> ions in a tetrahedral environment, with emission intensities correlating strongly with doping levels. The calculated Commission Internationale de l’Eclairage color coordinates of Mn<sup>2+</sup>-doped Cs<sub>3</sub>ZnBr<sub>5</sub> indicated high green color purity values up to 73.09% which implies its potential application for display applications. This RT sol-gel synthesis approach provides a scalable and energy-efficient method for fabricating Pb-free perovskites and lays the foundation for further development of environmentally friendly optoelectronic applications.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"25 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143927175","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}
Raj Kumar , G.A. Harmain , Mohammad Mursaleen , Showkat Ahmad Kumar , Pradeep Kumar
{"title":"Temperature-dependent fatigue crack growth behaviour of AZ31B magnesium alloy under varying overload conditions","authors":"Raj Kumar , G.A. Harmain , Mohammad Mursaleen , Showkat Ahmad Kumar , Pradeep Kumar","doi":"10.1016/j.jallcom.2025.180886","DOIUrl":"10.1016/j.jallcom.2025.180886","url":null,"abstract":"<div><div>This experimental study investigated the impact of single overload ratios of 1.50, 2.00, and 2.50 on the fatigue crack growth behaviour of AZ31B magnesium alloy under variable temperatures (300 K to 473 K). Following a single tensile overload (OL), the fatigue crack growth (FCG) rate initially decreased before stabilizing under constant amplitude loading (CAL). When the overload was applied at a crack length of 7.0 mm at 300 K, fatigue life increased by 34–171 % for overload ratios from 1.50 to 2.50. Similarly, the number of cycles to failure (<em>N</em><sub><em>f</em></sub>) increased by 39–180 % at 373 K and 48–170 % at 473 K. Field emission scanning electron microscopy (FE-SEM) revealed distinct overload regions on fracture surfaces, dimples, micro-cracks, fatigue striations, tearing ridges, and secondary cracks. Electron backscatter diffraction (EBSD) and transmission electron microscopy (TEM) analyses confirmed that overload-induced fatigue damage leads to localized grain misorientation, strain accumulation, and nanoscale defect evolution, significantly influencing crack growth and fatigue resistance. These findings emphasize the beneficial role of single tensile overloads in enhancing the fatigue performance of AZ31B magnesium alloy across a range of temperatures, offering valuable insights for the wide range of applications of magnesium-based structural components in thermomechanical applications.</div></div>","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"1030 ","pages":"Article 180886"},"PeriodicalIF":5.8,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143929066","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}
Yong Zhou, Jiamei Liu, Xudong Zhao, Bin Yang, Bing Li, Xiaoyang Liu
{"title":"Modulation of multiferroic properties of h-YMnO3 due to lattice distortion caused by Yb doping","authors":"Yong Zhou, Jiamei Liu, Xudong Zhao, Bin Yang, Bing Li, Xiaoyang Liu","doi":"10.1016/j.jallcom.2025.180821","DOIUrl":"https://doi.org/10.1016/j.jallcom.2025.180821","url":null,"abstract":"Because of their unique electrical and magnetic properties, the perovskite multiferroic materials exhibit significant potential in spintronic device applications. However, synthesizing room-temperature multiferroic materials with robust magneto-electric coupling effects remains a major challenge. In this work, Yb<sup>3+</sup>, with an ionic radius slightly smaller than Y<sup>3+</sup>, was selected for <em>A</em>-site doping in the <em>h</em>-YMnO<sub>3</sub>, which has a high ferroelectric transition temperature (T<sub>C</sub> ~ 900<!-- --> <!-- -->K) and a low antiferromagnetic transition temperature (T<sub>N</sub> ≤ 70<!-- --> <!-- -->K). This similar ionic radius allows Yb to substitute the Y site effectively while introducing distinct electronic states, thereby optimizing the structure and multiferroic properties of <em>h</em>-YMnO<sub>3</sub> without significantly altering the crystal structure. A series of Yb-doped Y<sub>1-<em>x</em></sub>Yb<sub><em>x</em></sub>MnO<sub>3</sub> (<em>x</em> = 0, 0.1, 0.2, 0.3, 0.4, 0.5 and 1) materials were synthesized <em>via</em> conventional solid-phase reaction. The effects of Yb doping on the structure, magnetism, and ferroelectricity of <em>h</em>-YMnO<sub>3</sub> were studied. X-ray diffraction (XRD) and corresponding XRD refining results show that as Y<sup>3+</sup> is replaced by Yb<sup>3+</sup> with smaller radii, the cell parameters and cell volume of Y<sub>1-<em>x</em></sub>Yb<sub><em>x</em></sub>MnO<sub>3</sub> decrease, the cell is compressed, and the lattice structure of Y<sub>0.5</sub>Yb<sub>0.5</sub>MnO<sub>3</sub> obtained under the condition of Yb semi-doping changes significantly. Subsequent magnetic and room-temperature ferroelectric test results show that the Y<sub>1-<em>x</em></sub>Yb<sub><em>x</em></sub>MnO<sub>3</sub> series samples have anti-ferromagnetic ground states. In particular, the proper inclination of Mn<sup>3+</sup> ions in the double perovskite structure of Y<sub>0.5</sub>Yb<sub>0.5</sub>MnO<sub>3</sub> generates strong Dzyaloshinskii-Moriya (DM) interactions, resulting in relatively strong antiferromagnetism. The antiferromagnetic Neel temperature (T<sub>N</sub>) from 37<!-- --> <!-- -->K to 41<!-- --> <!-- -->K. Yb<sup>3+</sup>-induced inclined ferroelectricity enables Y<sub>0.8</sub>Yb<sub>0.2</sub>MnO<sub>3</sub> to achieve the highest ferroelectric polarization of 0.030 µC cm<sup>−2</sup>, which is 180% greater than that of <em>h</em>-YMnO<sub>3</sub>. The results demonstrate that Yb doping plays a crucial role in regulating the structure and multiferroic properties of <em>h</em>-YMnO<sub>3</sub>, offering a novel strategy for developing room-temperature multiferroic materials with robust magneto-electric coupling.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"1 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143931195","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}
Katherine Jisselle Flores Vasquez, Carla da Silva Meireles, Marcelo Silveira Bacelos, George Ricardo Santana Andrade
{"title":"Highly Efficient Interfacial Solar Steam Generation Using Carbonized Loofah-Cu₂O Composite","authors":"Katherine Jisselle Flores Vasquez, Carla da Silva Meireles, Marcelo Silveira Bacelos, George Ricardo Santana Andrade","doi":"10.1016/j.jallcom.2025.180883","DOIUrl":"https://doi.org/10.1016/j.jallcom.2025.180883","url":null,"abstract":"Water scarcity, intensified by socioeconomic impacts and climate changes, calls for innovative and sustainable desalination methods. Solar distillation, leveraging renewable energy, represents a promising solution; however, it is hindered by low photothermal efficiency. Therefore, this study develops a novel composite material combining carbonized loofah and Cu<sub>2</sub>O particles to enhance interfacial solar steam generation performance. The porous microstructure of loofah together with the superior photothermal properties of Cu<sub>2</sub>O can achieve high light absorption and thermal efficiency. The CL/Cu<sub>2</sub>O composite synthesis involved <em>in situ</em> copper ion adsorption followed by thermal activation, creating uniform particle distribution. XRD, SEM, and TGA analyses confirmed the presence of Cu<sub>2</sub>O. Specifically, XRD identified ~21<!-- --> <!-- -->nm cubic Cu₂O crystallites, while SEM revealed a Cu₂O coating on the carbonized loofah (CL) fibers, which increased surface roughness and showed Cu₂O aggregates smaller than 250<!-- --> <!-- -->nm. UV-Vis spectroscopy showed increased absorbance for CL and CL/Cu<sub>2</sub>O compared to <em>in-nature</em> loofah (INL). The PZC was 2.0 for CL and 2.4 for CL/Cu<sub>2</sub>O. Additionally, water absorption of the composite exceeded 400%. Under sunlight exposure, the composite exhibited a remarkable 97% photothermal conversion efficiency and increased solar distillation productivity by up to 150% compared to conventional systems. The solar distillation process delivered high water purity, meeting potable water standards. The intact porous structure optimized interfacial heating, facilitating enhanced evaporation rates, even under low irradiance conditions.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"27 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143931273","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":"Electrically controlled edge-contact spin valves based on two-dimensional transition metal dichalcogenides","authors":"Shih-Hung Cheng, Er-Feng Hsieh, Ting-I Kuo, Wen-Jeng Hsueh","doi":"10.1016/j.jallcom.2025.180820","DOIUrl":"https://doi.org/10.1016/j.jallcom.2025.180820","url":null,"abstract":"Rapid technological advances have increased the demand for high-performance, energy-efficient semiconductor devices, particularly in wireless communications, artificial intelligence (AI), machine learning, and the Internet of Things (IoT). The limitations of conventional memory devices underscore the need for advanced solutions that offer both performance and efficiency. Integrating two-dimensional (2D) materials is crucial for next-generation memory and 3D integrated circuit (3DIC) systems. This theoretical study presents an electrically controlled edge-contact transition metal dichalcogenides spin valve (EC-TMDSV), designed to simultaneously achieve ultrahigh performance, improved energy efficiency, and scalability for future memory technologies. The maximum tunneling magnetoresistance (TMR) of the EC-TMDSV is approximately 10 times higher than that of the conventional top-contact TMDSV (TC-TMDSV), enabling faster and more accurate memory read operations compared to existing technologies. Additionally, the maximum spin current density of the proposed EC-TMDSV is about 20 times greater than that of traditional TC-TMDSVs, promoting faster write operations. Furthermore, the optimal operating regions for both reading and writing modes are clearly defined and distinct, effectively preventing undesired mixed operations. These results open new avenues for MRAM applications and promise significant breakthroughs in electrically controlled 2D-based edge-contact systems.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"192 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143927177","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}
Azim Uddin, Di Zhou, Makhsudsho G. Nematov, Moustafa A. Darwish, Xiao Li, Mohamed M. Salem
{"title":"Strategic dual-stratum microwire composites for effective electromagnetic shielding with low microwave reflectivity","authors":"Azim Uddin, Di Zhou, Makhsudsho G. Nematov, Moustafa A. Darwish, Xiao Li, Mohamed M. Salem","doi":"10.1016/j.jallcom.2025.180880","DOIUrl":"https://doi.org/10.1016/j.jallcom.2025.180880","url":null,"abstract":"The dynamic potential of ferromagnetic microwire composites, which are traditionally responsive to magnetic fields, stress, or hybridization, is explored for enhanced electromagnetic (EM) shielding in lightweight materials, targeting applications like microwave electronics, structural health monitoring, and temperature sensing. This study presents a novel dual-stratum design combining as-cast and annealed wire arrays (<em>i.e.,</em> A+<em>X</em>), where <em>X</em> represents any annealed arrays achieving high shielding. Integrating amorphous Co<sub>60</sub>Fe<sub>15</sub>B<sub>15</sub>Si<sub>10</sub> wires with crystalline counterparts balances impedance matching, improves absorption efficiency, and induces polarization effects via wire array topologies. Transmission electron microscopy (TEM) revealed nanocrystallites formed within an amorphous matrix, significantly boosting total shielding effectiveness (<em>SE</em><sub><em>T</em></sub>) to ~28<!-- --> <!-- -->dB (98.4% attenuation) at only 0.026<!-- --> <!-- -->vol% filler loading. The enhancement stems from synergistic interactions between as-cast and crystalline microwires acting as electrical and magnetic dipoles, optimizing EM wave interaction through combined dielectric and magnetic responses. Comparative analyses show thermal annealing is more suitable than Joule annealing for large-scale production. This cost-effective approach produces lightweight composites with superior <em>SE</em><sub><em>T</em></sub>, simple structure, and multifunctionality. These advancements expand multifunctional composite applications across industries, enabling effective microwave cloaking, non-contact stress monitoring, and thermal management with minimal filler content and complexity.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"26 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143927178","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}