Journal of Materiomics最新文献_第5页

Enhanced energy storage performance in Ag(Nb,Ta)O3 films via interface engineering 通过界面工程提高 Ag(Nb,Ta)O3 薄膜的储能性能

IF 8.4 1区材料科学

Journal of Materiomics Pub Date : 2024-06-07 DOI: 10.1016/j.jmat.2024.05.005

{"title":"Enhanced energy storage performance in Ag(Nb,Ta)O3 films via interface engineering","authors":"","doi":"10.1016/j.jmat.2024.05.005","DOIUrl":"10.1016/j.jmat.2024.05.005","url":null,"abstract":"<div><div>Dielectric capacitors with ultrahigh power density and ultra-fast charge/discharge rate are highly desired in pulse power fields. Environmental-friendly AgNbO3 family have been actively studied for its large polarization and antiferroelectric nature, which greatly boost the electric energy storage performance. However, high-quality AgNbO3-based films are difficult to fabricate, leading to a low breakdown field Eb (<1.2 MV/cm) and consequently arising inferior energy storage performance. In this work, we propose an interface engineering strategy to mitigate the breakdown field issue. A Ag(Nb,Ta)O3/BaTiO3 bilayer film is proposed, where the BaTiO3 layer acts as a p-type semiconductor while Ag(Nb,Ta)O3 layer is n-type, together with the n-type LaNiO3 buffer layer on the substrate, forming an n-p-n heterostructure. The n-p-n heterostructure elevates the potential barriers for charge transport, greatly reducing the leakage current. An extremely large breakdown field Eb∼4.3 MV/cm is achieved, being the highest value up to date in the niobate system. A high recoverable energy density Wrec∼62.3 J/cm3 and a decent efficiency η∼72.3% are obtained, much superior to that of the Ag(Nb,Ta)O3 monolayer film (Wrec∼46.4 J/cm3 and η∼80.3% at Eb∼3.3 MV/cm). Our results indicate that interface engineering is an effective method to boost energy storage performance of dielectric film capacitors.</div></div>","PeriodicalId":16173,"journal":{"name":"Journal of Materiomics","volume":"11 2","pages":"Article 100895"},"PeriodicalIF":8.4,"publicationDate":"2024-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141409793","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Tunable microware dielectric properties of high-entropy (Mg1/2Zn1/2)0.4+xLi0.4(Co1/2Ni1/2)0.4-xAl2O4 ceramics with low loss 低损耗高熵(Mg1/2Zn1/2)0.4+Li0.4(Co1/2Ni1/2)0.4-Al2O4 陶瓷的可调微器介电特性

IF 8.4 1区材料科学

Journal of Materiomics Pub Date : 2024-06-07 DOI: 10.1016/j.jmat.2024.04.015

{"title":"Tunable microware dielectric properties of high-entropy (Mg1/2Zn1/2)0.4+xLi0.4(Co1/2Ni1/2)0.4-xAl2O4 ceramics with low loss","authors":"","doi":"10.1016/j.jmat.2024.04.015","DOIUrl":"10.1016/j.jmat.2024.04.015","url":null,"abstract":"<div><div>In present study, high-entropy (Mg1/2Zn1/2)0.4+xLi0.4(Co1/2Ni1/2)0.4–xAl2O4 (x = 0.00–0.40) ceramics were fabricated via the solid-state reaction approach. The high-entropy ceramics exhibited a spinel structure with short-range local disorder and long-range structural order. The reduction of Co2+ and Ni2+ content suppress the damping behavior of atomic vibrations, promoting the structural ordering and contributing to higher quality factor (Q×f). The x = 0.35 sample with sintering at 1550 °C exhibited great microwave dielectric properties: a low dielectric constant (εr) of 7.92, a high-quality factor of 135,525 GHz, and a temperature coefficient of resonance frequency (τf) of −49 × 10−6 °C−1. The εr value was jointly dominated by both polarizability and relative density. The Q×f value was primarily connected to relative density, atomic vibrations, and the degree of covalency. The τf value was highly associated with the bond strength. These findings demonstrate the effectiveness of adopting high-entropy composition design for significantly improving microwave dielectric properties.</div></div>","PeriodicalId":16173,"journal":{"name":"Journal of Materiomics","volume":"11 3","pages":"Article 100894"},"PeriodicalIF":8.4,"publicationDate":"2024-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141396653","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Resolving nanograin morphology and sub-grain nanodomains via scanning probe acoustic microscopy in high energy density BaTiO3 ferroelectric films 通过扫描探针声学显微镜解析高能量密度 BaTiO3 铁电薄膜中的纳米晶粒形态和亚晶粒纳米域

IF 8.4 1区材料科学

Journal of Materiomics Pub Date : 2024-06-06 DOI: 10.1016/j.jmat.2024.05.004

{"title":"Resolving nanograin morphology and sub-grain nanodomains via scanning probe acoustic microscopy in high energy density BaTiO3 ferroelectric films","authors":"","doi":"10.1016/j.jmat.2024.05.004","DOIUrl":"10.1016/j.jmat.2024.05.004","url":null,"abstract":"<div><div>Energy storage property of a dielectric is closely tied with its nanostructure. In this study, we aim to achieve a deep understanding of this relationship in high energy density ferroelectric ceramic films, by probing into the nanograin and sub-grain nanostructures in polycrystalline BaTiO3 films integrated on Si. Through scanning probe acoustic microscopy analyses, it is revealed that the BaTiO3 films directly grown on Pt/Ti/Si mostly consist of large discontinuous columnar nanograins, while those grown on LaNiO3-buffered Pt/Ti/Si substrates have a dominant microstructure of continuous columnar nanograins. Furthermore, ultrafine ferroelastic domains of ∼10 nm wide are revealed inside the grains of the buffered BaTiO3 films, while those unbuffered films show about ∼50% increase in the domain width. The dielectric properties of the BaTiO3 films are well correlated with their characteristic nanostructures. Under an increasing electric field, the LaNiO3-buffered films display a slower decline in its dielectric constant and a later saturation of its electric polarization, leading to an improved energy storage performance. Device-level charge-discharge tests have verified not only the delayed polarization saturation and high energy density of the LaNiO3-buffered BaTiO3 film capacitors, but also a high power density in the same order as those of the ferroelectric ceramics.</div></div>","PeriodicalId":16173,"journal":{"name":"Journal of Materiomics","volume":"11 3","pages":"Article 100893"},"PeriodicalIF":8.4,"publicationDate":"2024-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141409778","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Component regulation and high-entropy engineering for enhanced antioxidant and high-temperature mechanical properties of protective films 通过成分调节和高熵工程增强保护膜的抗氧化性和高温机械性能

IF 8.4 1区材料科学

Journal of Materiomics Pub Date : 2024-06-06 DOI: 10.1016/j.jmat.2024.04.013

{"title":"Component regulation and high-entropy engineering for enhanced antioxidant and high-temperature mechanical properties of protective films","authors":"","doi":"10.1016/j.jmat.2024.04.013","DOIUrl":"10.1016/j.jmat.2024.04.013","url":null,"abstract":"<div>Transition metal nitrides (TMNs) have gained widespread application in protecting structural components due to their high strength and hardness. However, TMNs still have the challenge of structural instability and mechanical deterioration caused by oxidation under harsh high temperature conditions. Herein, we present a strategy combining component regulation with high-entropy engineering to develop an advanced high-temperature Al-containing high-entropy nitrides (HENs) material. To prevent the phase decomposition of AlN within the (NbMoTaWAl)N, theoretical simulations were employed to determine a critical atomic percent of 25.0% Al for maintaining the stability of the high-entropy structure. Ensuing experimental synthesis creates three Nb<img>Mo<img>Ta<img>W<img>Al<img>N films with varying Al content: a high-entropy film with 0.0% Al (HEN), a high-entropy film with 21.2% Al (HEN-Al), and an amorphous transition metal nitride film with 30.2% Al (a-TMN-Al), validating key high-entropy engineering benchmarks. It is found that the unique HEN-Al film exhibits excellent oxidation resistance and high-temperature hardness, attributed to the uniform distribution of Al atoms in the robust high-entropy structure, which creates conditions for forming a dense and continuous Al2O3 barrier layer, effectively hindering the diffusion of oxygen into the film interior. This study provides new insights to develop a new generation of high-temperature protective materials.</div>","PeriodicalId":16173,"journal":{"name":"Journal of Materiomics","volume":"11 1","pages":"Article 100890"},"PeriodicalIF":8.4,"publicationDate":"2024-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2352847824001163/pdfft?md5=85993872aff7edfdaaa2df83ba7d6f54&pid=1-s2.0-S2352847824001163-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141408749","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Homogeneous void nucleation in the presence of supersaturated vacancies and interstitials 存在过饱和空位和间隙时的均匀空洞成核

IF 8.4 1区材料科学

Journal of Materiomics Pub Date : 2024-06-04 DOI: 10.1016/j.jmat.2024.03.020

Lin Shao

{"title":"Homogeneous void nucleation in the presence of supersaturated vacancies and interstitials","authors":"Lin Shao","doi":"10.1016/j.jmat.2024.03.020","DOIUrl":"10.1016/j.jmat.2024.03.020","url":null,"abstract":"<div>Homogeneous void nucleation in metals containing arbitrary vacancies and interstitials has been reexamined, with corrections made to the original work by Katz and Wiedersich. The void size distributions derived previously missed an exponential modification function with void size as the exponent. As a result, void nucleation under a given vacancy supersaturation ratio is underestimated by orders of magnitude. The second improvement arises from the accuracy in calculating the vacancy arrival rate to a void. The present work proposes establishing a direct relationship between the vacancy arrival rate and the available self-diffusion coefficient. With these corrections and improvements, void nucleation in pure Fe is calculated as an example, and an analytic fitting formula is provided. The required vacancy supersaturation ratio and interstitial-to-vacancy flux ratio for void nucleation calculations can be easily obtained from an analytical solution of rate theory calculations, in which dislocation density and displacements per atom (dpa) rate are adjustable inputs. Alternatively, the nucleation rate calculation can be incorporated into rate theory calculations considering evolving dislocation densities, which leads to time-dependent void nucleation.</div>","PeriodicalId":16173,"journal":{"name":"Journal of Materiomics","volume":"10 5","pages":"Pages 1147-1159"},"PeriodicalIF":8.4,"publicationDate":"2024-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2352847824001175/pdfft?md5=82e6bd0240d8744b3156ababc4ecad07&pid=1-s2.0-S2352847824001175-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141404947","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Comment on “Ferroelectric composite-based piezoelectric energy harvester for self-powered detection of obstructive sleep” 关于 "基于铁电复合材料的压电能量收集器用于自供电检测阻塞性睡眠 "的评论

IF 8.4 1区材料科学

Journal of Materiomics Pub Date : 2024-06-01 DOI: 10.1016/j.jmat.2024.05.003

Alexander Tkach , Olena Okhay

引用次数: 0

SiCnws/CNTs/Cf-C/SiOC composites with multi-scale lossy phases for simultaneous electromagnetic wave absorption and thermal insulation 具有多尺度有损相的 SiCnws/CNTs/Cf-C/SiOC 复合材料，可同时吸收电磁波并隔热

IF 8.4 1区材料科学

Journal of Materiomics Pub Date : 2024-05-30 DOI: 10.1016/j.jmat.2024.04.010

Bin Ren , Yujun Jia , Hao Chen , Jiaying Ti , Yumeng Deng , Qiang Zhuang , Hejun Li

{"title":"SiCnws/CNTs/Cf-C/SiOC composites with multi-scale lossy phases for simultaneous electromagnetic wave absorption and thermal insulation","authors":"Bin Ren , Yujun Jia , Hao Chen , Jiaying Ti , Yumeng Deng , Qiang Zhuang , Hejun Li","doi":"10.1016/j.jmat.2024.04.010","DOIUrl":"10.1016/j.jmat.2024.04.010","url":null,"abstract":"<div><div>Carbon fiber reinforced carbon-based composites are considered to be an ideal lightweight material with exceptional high-temperature mechanical performance. Nevertheless, their high conductivity result in a strong reflection rather than absorption of electromagnetic wave (EMW) for the stealth application. To address this challenge, a novel carbon-based composite made of multi-scale lossy phases (Carbon nanotubes (CNTs), SiC nanowires (SiCnws), and Carbon fiber (Cf)) and impedance matching phase (SiOC ceramic) was fabricated by the precursor-derived method. The prepared SiCnws/CNTs/Cf-C/SiOC (SCC-CS) composites exhibit an effective absorption (EAB) of 2.4 GHz at a thickness of 1.9 mm and a minimum reflection loss (RLmin) of −58.44 dB (99% absorption) in the X band. The EMW absorption of the composite is attributed to the multiple loss mechanisms and favorable impedance matching with free space, caused by the multi-conductive phase and SiOC in the composite. In addition, the fabricated composites also have thermal insulation properties and can effectively achieve radar cross-sectional (RCS) reduction, which are promising aerospace composites with the integration of structure and function.</div></div>","PeriodicalId":16173,"journal":{"name":"Journal of Materiomics","volume":"11 2","pages":"Article 100885"},"PeriodicalIF":8.4,"publicationDate":"2024-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142441404","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Liquid crystal based tunable terahertz metadevices 基于液晶的可调谐太赫兹元器件

IF 8.4 1区材料科学

Journal of Materiomics Pub Date : 2024-05-29 DOI: 10.1016/j.jmat.2024.04.012

Lei Wang , Yanyan Wang , Guwei Zong , Wei Hu , Yanqing Lu

{"title":"Liquid crystal based tunable terahertz metadevices","authors":"Lei Wang , Yanyan Wang , Guwei Zong , Wei Hu , Yanqing Lu","doi":"10.1016/j.jmat.2024.04.012","DOIUrl":"10.1016/j.jmat.2024.04.012","url":null,"abstract":"<div>Metasurface significantly enriches the light-matter interaction and promotes the development of planar optics. In recent years, with the rapid advancements of terahertz (THz) technology, THz devices with switchable and reconfigurable functions have been intensively pursued. Liquid crystal (LC), a unique soft matter that combines the fluidity of liquids and the order of crystals, is now indispensable in displays and spatial light modulations. LC is integrated with metasurfaces to realize dynamic THz devices and apparatuses as well. This review summarizes the research progress in LC based THz metadevices in three different respects: LC planar THz devices, LC integrated metal metasurfaces, and LC integrated dielectric metasurfaces. Various technologies for fabrications of LC microstructures and integrations of LCs with metal or dielectric metasurfaces are presented. The obtained LC metadevices exhibit excellent responsiveness to external stimulus such as electric fields, magnetic fields, heat, and light. By this means, the amplitude, frequency, phase as well as polarization of THz waves are dynamically manipulated. The LC based tunable THz metadevices will significantly improve THz applications in imaging, communication, and sensing.</div>","PeriodicalId":16173,"journal":{"name":"Journal of Materiomics","volume":"11 1","pages":"Article 100888"},"PeriodicalIF":8.4,"publicationDate":"2024-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S235284782400114X/pdfft?md5=32e1ee718ca1cf833843910d04ad5af9&pid=1-s2.0-S235284782400114X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142128643","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Metamaterial springs for low-frequency vibration isolation 用于低频振动隔离的超材料弹簧

IF 8.4 1区材料科学

Journal of Materiomics Pub Date : 2024-05-29 DOI: 10.1016/j.jmat.2024.04.009

Wenlong Liu , Lingling Wu , Junming Zhang , Jingbo Sun , Ji Zhou

{"title":"Metamaterial springs for low-frequency vibration isolation","authors":"Wenlong Liu , Lingling Wu , Junming Zhang , Jingbo Sun , Ji Zhou","doi":"10.1016/j.jmat.2024.04.009","DOIUrl":"10.1016/j.jmat.2024.04.009","url":null,"abstract":"<div>Metadevices have emerged as a new element or system in recent years, from optics to mechanical science, showing superior performance and powerful application potential. In this study, a mechanical metadevice that capable of low-frequency vibration isolation, which is called metamaterial springs or metasprings, is proposed. Meanwhile, a modular design method is reported to obtain the customizable quasi-zero stiffness characteristic of the designed metaspring. As proof-of-concept, we demonstrate, both in simulations and experiments, the quasi-zero stiffness characteristics of the proposed metasprings using 3D-printed experimental specimens. Moreover, the low-frequency vibration isolation properties of the proposed metasprings is demonstrated both in vibration tests and automotive vibration tests. This work provides a new mechanical metadevice, that is, metasprings for low-frequency vibration isolation, as well as a modular design method for designing metasprings, which may revolutionize vibration isolation devices in the field of low-frequency vibration isolation.</div>","PeriodicalId":16173,"journal":{"name":"Journal of Materiomics","volume":"11 1","pages":"Article 100884"},"PeriodicalIF":8.4,"publicationDate":"2024-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2352847824001102/pdfft?md5=620ef7bf7641fbaf79c56fb1ccc1096c&pid=1-s2.0-S2352847824001102-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142128644","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Designing a glass nanoshell on barium titanium trioxide to suppress nanocrystal growth during sintering for fine-grain dielectric ceramics 在三氧化钡钛上设计玻璃纳米壳，以抑制烧结过程中纳米晶体的生长，从而制造出细粒度电介质陶瓷

IF 8.4 1区材料科学

Journal of Materiomics Pub Date : 2024-05-29 DOI: 10.1016/j.jmat.2024.04.008

Jia Yu , Qi Jiang , Qingchao Jia , Liangzhu Zhang , Wenchun Chiu , Huidan Zeng

{"title":"Designing a glass nanoshell on barium titanium trioxide to suppress nanocrystal growth during sintering for fine-grain dielectric ceramics","authors":"Jia Yu , Qi Jiang , Qingchao Jia , Liangzhu Zhang , Wenchun Chiu , Huidan Zeng","doi":"10.1016/j.jmat.2024.04.008","DOIUrl":"10.1016/j.jmat.2024.04.008","url":null,"abstract":"<div><div>Barium titanate (BaTiO3, BT) is one of the key dielectric materials for multilayer ceramic capacitor (MLCC) industry. To meet the development trend of miniaturization and high capacity of MLCC, the sintered ceramic with nanosized grain is required. Herein, we demonstrate a controllable preparation of fine-grain BaTiO3 ceramic by using sol-gel glass encapsulation strategy to suppress the growth of nanocrystal during sintering. It is found that the BaTiO3 nanocrystal with average lateral particle size of 70 nm and 200 nm (BT70 and BT200) can be coated with Bi2O3-B2O3-SiO2 (BBS) glass shell to form core-shell structures. The fine crystal of barium titanate ceramics can be achieved under different encapsulation quantities and sintering temperature. However, BT70, with a larger specific surface area, higher reactivity, and lower crystallinity, was more prone to hydrolyze in the sol-gel process, leading to the formation of a new phase after sintering, Ba2TiSi2O8, which adversely affected both the sintering behavior and dielectric properties. On the other hand, BT200 exhibited lower possibility to hydrolyze in the sol-gel process, resulting in single-phase ceramics after sintering. When the BT200 coated with 5% (in mass) BBS was sintered at 1100 °C, a dense BaTiO3 ceramic were obtained, with dielectric constant of 1194.23 and loss of 0.0139 at room temperature and 1 kHz. Therefore, this work provides a robust strategy for suppressing the nanocrystal growth during sintering for MLCC applications.</div></div>","PeriodicalId":16173,"journal":{"name":"Journal of Materiomics","volume":"11 2","pages":"Article 100883"},"PeriodicalIF":8.4,"publicationDate":"2024-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142427867","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0