APL Materials最新文献_第7页

Spin magnetotransport in rare-earth iron garnet (REIG)/Pt: Effects of modulated bulk and REIG/Pt interfaces 稀土铁榴石（REIG）/铂中的自旋磁传输：调制体和 REIG/Pt 界面的影响

IF 6.1 2区材料科学

APL Materials Pub Date : 2024-08-14 DOI: 10.1063/5.0215071

Pei Gen Li, Sheung Mei Ng, Xin Yuan, Fu Xiang Zhang, Hon Fai Wong, Zhi Qin Chu, Peng Cao, Chi Wah Leung

{"title":"Spin magnetotransport in rare-earth iron garnet (REIG)/Pt: Effects of modulated bulk and REIG/Pt interfaces","authors":"Pei Gen Li, Sheung Mei Ng, Xin Yuan, Fu Xiang Zhang, Hon Fai Wong, Zhi Qin Chu, Peng Cao, Chi Wah Leung","doi":"10.1063/5.0215071","DOIUrl":"https://doi.org/10.1063/5.0215071","url":null,"abstract":"The intrinsic magnetization compensation behaviors of rare-earth iron garnets (REIGs) make the material promising for applications in ultrafast spin storage devices. REIG/heavy metal heterostructures such as TbIG/Pt often display two sign crossovers of anomalous Hall effect resistance with varying temperatures. One of these crossovers is attributed to the magnetization compensation of REIG, and the other to the competition between the magnetic proximity effect and the spin Hall effect. Here, we design trilayer REIG heterostructures based on two rare-earth species (Tb and Eu). We modulate the layer stacking of the TbIG/EuIG/TbIG sandwich with a fixed total thickness and explore the contributions of REIG bulk and REIG/Pt interfaces on these two crossover points. As TbIG gradually moves away from Pt, the compensation temperature shows some fluctuations. However, when TbIG is entirely out of contact with Pt, the second crossover point undergoes a change that shows REIG/Pt interface dependency. The results highlight the dominance of REIG bulk on the compensation behavior and the interface sensitivity of the second crossover point. This study provides a reference for designing controllable spintronics devices, such as magnon valve applications.","PeriodicalId":7985,"journal":{"name":"APL Materials","volume":"27 1","pages":""},"PeriodicalIF":6.1,"publicationDate":"2024-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142197832","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}

引用次数: 0

A photo rechargeable capacitor based on the p–n heterojunction of ZnO/ZIF-67 showing enhanced photovoltage 一种基于氧化锌/ZIF-67 p-n 异质结的光充电电容器，显示出更强的光电压

IF 6.1 2区材料科学

APL Materials Pub Date : 2024-08-14 DOI: 10.1063/5.0219883

Yanlong Lv, Xin Sun, Changhua Mi, Jianan Gu, Yanhong Wang, Meicheng Li

引用次数: 0

Ellingham diagrams of binary oxides 二元氧化物的埃林厄姆图

IF 6.1 2区材料科学

APL Materials Pub Date : 2024-08-14 DOI: 10.1063/5.0216426

Shun-Li Shang, Shuang Lin, Michael C. Gao, Darrell G. Schlom, Zi-Kui Liu

{"title":"Ellingham diagrams of binary oxides","authors":"Shun-Li Shang, Shuang Lin, Michael C. Gao, Darrell G. Schlom, Zi-Kui Liu","doi":"10.1063/5.0216426","DOIUrl":"https://doi.org/10.1063/5.0216426","url":null,"abstract":"Controlling the oxidation state of constituents by tuning the oxidizing environment and materials chemistry is vital to the successful synthesis of targeted binary or multicomponent oxides. We have conducted a comprehensive thermodynamic analysis of 137 binary oxides to calculate their Ellingham diagrams. It is found that the “reactive” elements that oxidize easily are the f-block elements (lanthanides and actinides), elements in groups II, III, and IV (alkaline earth, Sc, Y, Ti, Zr, and Hf), and Al and Li. In contrast, the “noble” elements are easily reduced. These are coinage metals (Cu, Ag, and especially Au), Pt-group elements, and Hg and Se. Machine learning-based sequential feature selection indicates that the ease of oxidation can be represented by the electronic structures of pure elements, for example, their d- and s-valence electrons, Mendeleev numbers, and groups, making the Periodic Table a useful tool for qualitatively assessing the ease of oxidation. The other elemental features that weakly correlate with the ease of oxidation are thermochemical properties such as melting points and the standard entropy at 298 K of pure elements. Applying Ellingham diagrams enables the oxidation of multicomponent materials to be predicted, such as the Fe–20Cr–20Ni alloy (in wt. %) and the equimolar high entropy alloy of AlCoCrFeNi. These Ellingham diagram-based predictions are in accordance with thermodynamic calculations using the CALPHAD approach and experimental observations in the literature.","PeriodicalId":7985,"journal":{"name":"APL Materials","volume":"43 1","pages":""},"PeriodicalIF":6.1,"publicationDate":"2024-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142197827","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}

引用次数: 0

A low-cost and convenient route of fabricating GaN films with P-type mixed microcrystalline and amorphous structure deposited via Ga target of magnetron sputtering 通过磁控溅射镓靶沉积具有 P 型微晶和非晶混合结构的氮化镓薄膜的低成本便捷制备路线

IF 6.1 2区材料科学

APL Materials Pub Date : 2024-08-14 DOI: 10.1063/5.0217625

Xueqing Chen, Nan Li, Zerong Xing, Jiasheng Zu, Xianwei Meng, Zhuquan Zhou, Qian Li, Lifeng Tian, Yuntao Cui, Jing Liu

{"title":"A low-cost and convenient route of fabricating GaN films with P-type mixed microcrystalline and amorphous structure deposited via Ga target of magnetron sputtering","authors":"Xueqing Chen, Nan Li, Zerong Xing, Jiasheng Zu, Xianwei Meng, Zhuquan Zhou, Qian Li, Lifeng Tian, Yuntao Cui, Jing Liu","doi":"10.1063/5.0217625","DOIUrl":"https://doi.org/10.1063/5.0217625","url":null,"abstract":"GaN, a third-generation semiconductor, has gained widespread attention owing to its high temperature resistance, wide bandgap, and high critical breakdown electric fields. Magnetron sputtering has a broad potential in the field of low-cost growth of GaN on account of high efficiency, superior quality, and convenient operation. However, challenges caused from the pure Ga targets with a huge refrigeration system need to be resolved for wide practices. Here, a new and cost-effective Ga target for magnetron sputtering was fabricated by utilizing the wetting properties of CuGa2 and Ga. Mixed microcrystalline and amorphous GaN films were obtained via reactive magnetron sputtering employing the Ga target. The average deposition rate is about 1.68 nm/min, and the average roughness is ∼7.45 ± 0.26 nm under 100 W of sputtering power. In addition, the sputtered GaN films were found to be wide-bandgap and p-type semiconductors with high transmittance, as revealed by x-ray photoelectron spectroscopy and absorption spectra. The GaN films display a bandgap of ∼3.60 eV and a transmittance exceeding 88.5% in the visible range. Furthermore, field-effect transistors and metal–semiconductor–metal photodetectors have been fabricated using the obtained GaN films, demonstrating favorable response characteristics. The prospects of microcrystalline/amorphous GaN films in sensing, power devices, and flexible electronics were forecasted. Overall, a low-cost and pervasive route of target fabrication process expands the possibilities of using low melting point metals in magnetron sputtering.","PeriodicalId":7985,"journal":{"name":"APL Materials","volume":"43 1","pages":""},"PeriodicalIF":6.1,"publicationDate":"2024-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142197833","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}

引用次数: 0

MXene-reinforced bioactive polymer hydrogels for biomedical applications 用于生物医学应用的 MXene 增强型生物活性聚合物水凝胶

IF 6.1 2区材料科学

APL Materials Pub Date : 2024-08-09 DOI: 10.1063/5.0226665

Guanghui Gu, Xue Chen, Gang Wei, Mingjin Xu

{"title":"MXene-reinforced bioactive polymer hydrogels for biomedical applications","authors":"Guanghui Gu, Xue Chen, Gang Wei, Mingjin Xu","doi":"10.1063/5.0226665","DOIUrl":"https://doi.org/10.1063/5.0226665","url":null,"abstract":"MXenes, a novel class of two-dimensional (2D) materials, have attracted considerable attention in various fields, especially in drug delivery, wound healing, bone tissue engineering, biosensing, and cancer treatment. Thanks to their remarkable physicochemical properties, MXenes hold great promise for biomedical applications. Concurrently, hydrogels composed of polymers have been extensively utilized in biomedical contexts. The unique properties of MXenes facilitate their integration into various bioactive hydrogels with enhanced functions and properties, thereby endowing the composites with multifunctional capabilities. MXene-reinforced polymer hydrogels (MRPHs) synergistically combine the advantageous characteristics of both MXenes and hydrogels, making them highly adaptable for integration with other theranostic strategies in medical applications. In this comprehensive review, we demonstrate recent advances in the design and synthesis of MRPHs for biomedical applications. Specifically, we introduce the unique functions and properties of MRPHs and analyze the methods for tailoring the functions of MRPHs by incorporating them with other active components, including functional molecules, 2D materials, metal ions, natural polymers, and drugs/genes. We then discuss the biomedical applications of the designed bioactive MRPHs in wound healing, tissue engineering, biosensors, and cancer therapy. We hope that this work provides valuable guidance and inspiration for readers to develop novel MRPHs for advanced applications.","PeriodicalId":7985,"journal":{"name":"APL Materials","volume":"41 1","pages":""},"PeriodicalIF":6.1,"publicationDate":"2024-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141934529","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}

引用次数: 0

Close-space sublimation of single-crystal metal films 单晶金属薄膜的近空间升华

IF 6.1 2区材料科学

APL Materials Pub Date : 2024-08-09 DOI: 10.1063/5.0216953

Oliver J. Burton, Stephan Hofmann

引用次数: 0

Solution-based iron doping of solvothermally grown 2D hexagonal bismuth telluride 基于溶液的铁掺杂溶液热生长二维六方碲化铋

IF 6.1 2区材料科学

APL Materials Pub Date : 2024-08-01 DOI: 10.1063/5.0220681

Gabriel E. Marcus, Timothy W. Carlson, Kadaba Swathi, David Carroll

{"title":"Solution-based iron doping of solvothermally grown 2D hexagonal bismuth telluride","authors":"Gabriel E. Marcus, Timothy W. Carlson, Kadaba Swathi, David Carroll","doi":"10.1063/5.0220681","DOIUrl":"https://doi.org/10.1063/5.0220681","url":null,"abstract":"In this work, we examine the formation of iron-based magnetic domains on two-dimensional (2D) single-crystal bismuth telluride plates. Using solvothermal chemical methods, 2D bismuth telluride (Bi2Te3) single crystalline nanoplates were reacted with iron salts (FeCl2) to achieve electrical doping. The use of a reducing agent [L(+)-ascorbic acid] along with FeCl2 resulted in homogeneous dispersion of iron across the crystal, whereas non-reduced iron doping achieved edge growth of iron/iron oxide nanoparticles. High-resolution analytical electron microscopy was used to examine the iron nanoparticle accumulation and morphology at nanoplate edges for non-reduced materials and iron dispersions within the crystals in the case of reduction. Our analysis revealed little variation in the atomic uptake of iron in any form over a range of solution-dopant concentrations. However, structural analysis and transport measurements clearly indicate the tendency of the dopant nanoparticles to oxidize quickly. The Seebeck coefficient and power factor also express modifications with exposure to oxidation, providing an indirect probe of the dopant modification to the host Bi2Te3’s electronic properties. Importantly, however, magnetic force microscopy images show a distinct difference in the formation of magnetic phases with and without the use of reducing agents during iron doping. This suggests that oxidation post-doping does not form magnetic phases, whereas oxidation during the doping process is suitable for obtaining magnetically doped Bi2Te3 nanocrystals.","PeriodicalId":7985,"journal":{"name":"APL Materials","volume":"298 1","pages":""},"PeriodicalIF":6.1,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141884536","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}

引用次数: 0

Designing polysaccharide materials for tissue repair and regeneration 设计用于组织修复和再生的多糖材料

IF 6.1 2区材料科学

APL Materials Pub Date : 2024-08-01 DOI: 10.1063/5.0223937

Anqi Jin, Yunyuan Shao, Fangyan Wang, Jiayin Feng, Lanjie Lei, Minghai Dai

{"title":"Designing polysaccharide materials for tissue repair and regeneration","authors":"Anqi Jin, Yunyuan Shao, Fangyan Wang, Jiayin Feng, Lanjie Lei, Minghai Dai","doi":"10.1063/5.0223937","DOIUrl":"https://doi.org/10.1063/5.0223937","url":null,"abstract":"Tissue repair and regeneration are critical processes for maintaining the integrity and function of various organs and tissues. Recently, polysaccharide materials and protein materials have garnered interest for use in tissue repair strategies. However, polysaccharides are more stable and unaffected by temperature and pH changes compared to proteins, and some polysaccharides can provide stronger mechanical support, which is particularly important for constructing tissue-engineered scaffolds and wound dressings. This Review provides an in-depth overview of the origins of polysaccharides, the advantages of polysaccharide materials, and processing and design strategies. In addition, the potential of polysaccharide materials for the restoration of tissues such as skin, heart, and nerves is highlighted. Finally, we discuss in depth the challenges that polysaccharide materials still face in tissue repair, such as the stability of the material, regulating mechanical characteristics and deterioration rates under different conditions. To achieve more effective tissue repair and regeneration, future research must focus on further improving the characteristics and functionalities of polysaccharide materials.","PeriodicalId":7985,"journal":{"name":"APL Materials","volume":"75 1","pages":""},"PeriodicalIF":6.1,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141884955","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}

引用次数: 0

Thermal history-dependent characteristics in van der Waals ferromagnet Fe5−xGeTe2 (x ∼ 0.16) 范德瓦尔斯铁磁体 Fe5-xGeTe2 (x ∼ 0.16) 中与热历史有关的特性

IF 6.1 2区材料科学

APL Materials Pub Date : 2024-08-01 DOI: 10.1063/5.0215121

Ramesh Lalmani Yadav, Pallab Bag, Chien-Chih Lai, Yung-Kang Kuo, Chia-Nung Kuo, Chin-Shan Lue

{"title":"Thermal history-dependent characteristics in van der Waals ferromagnet Fe5−xGeTe2 (x ∼ 0.16)","authors":"Ramesh Lalmani Yadav, Pallab Bag, Chien-Chih Lai, Yung-Kang Kuo, Chia-Nung Kuo, Chin-Shan Lue","doi":"10.1063/5.0215121","DOIUrl":"https://doi.org/10.1063/5.0215121","url":null,"abstract":"We investigated the thermal-history dependence of physical properties in a quenched Fe5−xGeTe2 (x ∼ 0.16) single crystal by measuring magnetization (M), electrical resistivity (ρ), Seebeck coefficient (S), and thermal conductivity (κ) as a function of temperature (T). The results reveal anomalies in these physical quantities around various transition points: ferromagnetic (TC ∼ 310–300 K), helimagnetic (TH ∼ 275 K), charge ordering (TCO ∼ 165 K), spin-reorientation (T* ∼ 100–120 K), and a Fermi-liquid (FL) phase below TL ∼ 35 K. Using power-law fitting, the M(T) analysis near TC shows that Fe moments become primarily itinerant after thermal cycling. The ρ(T) results indicate inherent residual stresses in the crystal that alter with thermal cycling, influencing ferromagnetic domain formations within grain boundaries. The system exhibits a strongly correlated FL behavior at low temperatures, which ceases above TL due to spin fluctuations. In the T-range of T* ≤ T ≤ TCO, ρ(T) and S(T) analyses suggest significant electronic band structure modifications with multiband effects. The κ(T) data indicate phonon-dominated heat transport in the crystal, with a phonon behavior influenced by inherent lattice strains following initial thermal cycles, as evidenced by the decreased phonon peak height at low temperatures. In addition, there is evidence of phonon localization and electron–phonon coupling at higher temperatures.","PeriodicalId":7985,"journal":{"name":"APL Materials","volume":"81 1","pages":""},"PeriodicalIF":6.1,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141884807","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}

引用次数: 0

A strategy for more reliably obtaining Y3Fe5O12 thin films with both low damping and highly spin transparent surface 更可靠地获得具有低阻尼和高自旋透明表面的 Y3Fe5O12 薄膜的策略

IF 6.1 2区材料科学

APL Materials Pub Date : 2024-08-01 DOI: 10.1063/5.0202639

Yunfei Xie, Shuyao Chen, Yucong Yang, Dong Gao, Qiuli Chen, Ziyue Bi, Yuhang Liu, Lei Bi, Haiyuan Chen, Donghua Liu, Tao Liu

引用次数: 0