Results 21 to 30 of about 32,507 (170)
Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT Multicomponent transition metal oxides (TMOs) incorporating rare‐earth (RE) elements have emerged as promising materials for the oxygen evolution reaction (OER). However, knowledge of how to regulate the structure of TMO‐based nanomaterials through RE incorporation to enhance catalytic performance remains limited.
Bolin Zhao +6 more
wiley +1 more source
Si Alloying Enables High Performance in Ce‐Substituted Hot‐Deformed Nd–Fe–B Magnets
Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT High levels of Ce substitution typically degrade the magnetic performance of hot‐deformed Nd–Fe–B magnets, posing challenges for developing resource‐efficient permanent magnets. Here, we demonstrate that minor Si alloying in (Nd0.6Ce0.4)‐Fe‐B hot‐deformed magnets effectively compensates for this degradation and enables enhanced magnetic ...
Feifei Li +6 more
wiley +1 more source
四川大学学报. 自然科学版, 2008 通过射频磁控溅射技术在Si(111)衬底上制备了不同含量的Nd掺杂ZnO薄膜.XRD和AFM分析表明,Nd掺杂没有改变ZnO薄膜的结构,薄膜为纳米多晶结构,未掺杂ZnO沿c择优生长.Nd掺杂使ZnO薄膜表面粗糙,起伏较大,薄膜中随Nd掺杂量的增加颗粒减小.室温光致发光谱显示,薄膜出现了395nm的强紫光峰和495nm的弱绿光峰,同时,Nd掺杂不改变PL谱的峰位置,Nd含量对PL谱的峰强度产生了一定影响.
文军, 陈长乐
doaj
Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT Integrating light emission and electromagnetic wave (EMW) absorption into a single material opens up possibilities for multienvironmental applications. Herein, we propose a novel “molecular engineering‐pyrolysis conversion” strategy to construct a bifunctional system with tunable photoluminescence and efficient EMW absorption performance.
Renjie Wang +7 more
wiley +1 more source
Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT The Janus structure of ZnIn2S4 (ZIS) endows it with an intrinsic built‐in electric field that effectively drives photogenerated charge separation. However, this very structure also renders the predominant (001) facet (In–S termination) catalytically inert due to its low electron density and high energy barrier for the hydrogen evolution ...
Qingao Zhou +8 more
wiley +1 more source
四川大学学报. 自然科学版, 2005 适量的钒掺杂,大大增加了SrBi4Ti4O15(SBTi)铁电材料的剩余极化2Pr,并改善了材料的耐压性能.SBTi拉曼模的位置,基本不受V掺杂的影响,但对应Ti O6氧八面体的拉曼模在掺杂明显宽化,这与V5+取代进入Ti O6中的Ti4+后,材料局部无序性增大,应力增加有关.X射线光电子能谱表明,不同掺杂量样品的Bi4f和Ti2p的结合能未有明显变化,这与B位高价掺杂减少氧空位的特殊机制有关.材料的2Pr增加,是高价阳离子掺杂导致材料中氧空位浓度的减少,局部无序性的增加共同作用的结果.
朱骏, 何军辉, 陈小兵
doaj
Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT Size‐controllable Sn nanoparticles are designed in this work via oxide doping to be uniformly embedded into flexible N‐doped carbon nanofibers, in which the agglomeration and migration of Sn are effectively restrained due to the suppressive effect of selected oxides, including SiO2, TiO2, and ZnO. Benefiting from unique merits of the embedment
Yu Xin +6 more
wiley +1 more source
Dianci bileiqi, 2009 综述了近年来稀土掺杂氧化锌压敏瓷中的研究进展。掺杂稀土氧化物可明显的减小ZnO晶粒尺寸,使晶粒尺寸分布均匀;其中掺杂Y2O3可使ZnO-Bi2O3系压敏瓷晶粒尺寸由11.3μm降到5.4μm,掺杂Er2O3使晶粒尺寸由1.60μm减小到1.06μm。显著提高了ZnO压敏瓷的电位梯度、降低了漏电流。其中在ZnO-Bi2O3系压敏瓷中掺杂Y2O3,可获得电位梯度约为270 V/mm、漏电流为3μA、压比为1.66的电阻片,在ZnO-PrA6O11系压敏瓷中掺杂Er2O3,电位梯度可提高到416.3 V/mm,
巫欣欣 +4 more
doaj
Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT Lithium‐selenium (Li‐Se) batteries have attracted considerable attention due to their high theoretical specific capacity and the intrinsically good electronic conductivity of selenium. Nevertheless, low active‐material utilization, parasitic side reactions, and sluggish reaction kinetics hinder their practical application.
Yanan Fu +8 more
wiley +1 more source
Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT Photocatalytic hydrogen evolution technology is a crucial approach to achieve efficient solar energy conversion and green hydrogen production. However, traditional semiconductor photocatalysts often face issues such as weak visible‐light response, high photogenerated charge carrier recombination, and poor structural stability, severely ...
Longtao Guo +8 more
wiley +1 more source