【摘 要】
：
A novel Fe-Y composite oxide (Fe∶ Y-6.5) nanocluster was synthesized by self-assembly approach.The α-Fe2O3 and cubic-Y2O3 nanocrystalline with diameter around
【机 构】
：
School of Materials Science and Engineering,Northeastern University,Shenyang 110004,China;State Key
论文部分内容阅读
A novel Fe-Y composite oxide (Fe∶ Y-6.5) nanocluster was synthesized by self-assembly approach.The α-Fe2O3 and cubic-Y2O3 nanocrystalline with diameter around 10 nm are homogeneously assembled to form a cluster architecture which are constituted of Fe6.5Y composite oxide particles.Additional oxygen vacancies are introduced with cubic-Y2O3,and the oxygen vacancies as Fe3+-Vo-Y3+ between α-Fe2O3 and cubic-Y2O3 nanocrystalline are generated by self-assembly process.Magnetic hysteresis loops recorded by vibrating sample magnetometry at 273 K display a ferromagnetic order,related to the fact that Fe3+-Vo-Y3+ act as defect centers in the bound magnetic polaron model for Fe-Y composite oxide nanomaterial.The ferromagnetic properties are proportional to oxygen vacancy contents,and maximum magnetization (Mm) value of the nano-cluster reaches 5.14 A.m2/g.
其他文献
In urban Vehicular Ad hoc Networks(VANETs),high mobility of vehicular environment and frequently changed network topology call for a low delay end-to-end routing algorithm.In this paper,we propose a Multi-Agent Reinforcement Learning(MARL)based decentrali
Learning-based multi-task models have been widely used in various scene understanding tasks, and complement each other, i.e., they allow us to consider prior semantic information to better infer depth
At present,the rare earth (RE) ions doped phosphors have attracted more and more attention because of their excellent properties.In this paper,a series of novel
本实验是研究在不同硫化体系下,不同种类、不同份量补强剂在品牌洗衣机油封胶料中的应用性能。通过对产品各项指标性能及物理机械性能对比分析发现,在有效硫化体系及混合硫化体系下,配方填料以N990为主的胶料,门尼粘度较小;配方填料以喷雾炭黑为主的胶料,门尼粘度较大。两种硫化体系硫化曲线数据对比发现,混合硫化体系较适合实际生产工艺。胶料物性数据分析发现,配方3#、4#、7#、8#符合相应企业技术指标要求。结合胶料压缩永久变形性及耐磨性实验发现,配方7#、8#技术参数较佳,其中配方8#综合性能最好,较适宜应用于生产洗
In the Internet of vehicles(IoV),direct communication between vehicles,i.e.,vehicle-tovehicle(V2V)may have lower latency,compared to the schemes with help of Road Side Unit(RSU)or base station.In this paper,the scenario where the demands of a vehicle are
垃圾填埋场的再利用建设需以其修复后的场地稳定化程度评估判断为前提.由于垃圾填埋场的修复治理及稳定化评估多以环境工程为主导,风景园林相关研究较少,致使垃圾填埋场的再利用建设受到诸多限制.如何在环境工程与风景园林深度协同的基础上,构建基于稳定化评估的垃圾填埋场再利用建设适宜性决策机制是垃圾填埋场再生面临的一大挑战.鉴于此,以跨学科合作视角,基于垃圾填埋场稳定化空间格局评估研究,构建垃圾填埋场再利用建设适宜性决策机制,并应用于北京市北神树垃圾填埋场再生实践中,以期为垃圾填埋场再生工作的有序开展提供新的技术策略方
In MEC-enabled vehicular network with limited wireless resource and computation resource,stringent delay and high reliability requirements are challenging issues.In order to reduce the total delay in the network as well as ensure the reliability of Vehicu
In this paper,the spectral efficiency(SE)of an uplink hardware-constrained cell-free massive multi-input multi-output(MIMO)system with maximal ratio combining(MRC)receiver filters in the context of superimposed pilots(SPs)is investigated.Tractable closed-
“风景园林与固废处理”将2个完全不搭界的专业领域并列在一起,这是哪个榆木脑袋强扭出来的主题?但是它又串联了园林与固废这2个特殊的市政设施,这是何等才华横溢的创意构想!一个是优雅的艺术名词,一个是机械的技术动词,这让哲学和科学、艺术和技术、名词和动词等不直接相关的内容,都必须重新统筹思考!
Driven by the continuous penetration of high data rate services and applications,a large amount of unregulated visible light spectrum is used for communication to fully meet the needs of 6th generation(6G)mobile technologies.Visible light communication(VL