Results 51 to 60 of about 56,027 (314)

Enhanced Thermoelectric Properties of p‑Type CaMg₂Bi₂ via a Synergistic Effect Originated from Zn and Alkali-Metal Co-doping [PDF]

, 2020
Bi-based Zintl phase CaMg2Bi2 is a promising thermoelectric material. Here, we report that the high-concentration point defects induced by equivalent Zn doping on the Mg site significantly enhance phonon scattering and then suppress lattice thermal ...
Muchun Guo (8344545), Jianbo Zhu (1849861), Haixu Qin (8180898), Jiehe Sui (1504270), Fengkai Guo (8344548), Wei Cai (121428), Li Yin (286335), Qian Zhang (49333)   +7 more
core   +1 more source

Ionic Transportation and Dielectric Properties of YF₃:Eu³⁺ Nanocrystals

Nanomaterials, 2018
The ionic transportation and dielectric properties of YF3:Eu3+ nanocrystals are investigated by AC impedance spectroscopy. The ion diffusion coefficient and conductivity increase along with the doping concentration and reach their highest values at 4% of
Xiaoyan Cui, Tingjing Hu, Jingshu Wang, Junkai Zhang, Xin Zhong, Yanli Chen, Xuefei Li, Jinghai Yang, Chunxiao Gao   +8 more
doaj   +1 more source

A study on the diffusion properties of oxygen in Al and W-doped λ-Ta2O5

AIP Advances, 2021
The formation energy of an oxygen vacancy and the diffusion barrier of an oxygen ion have a significant impact on the operating voltage and other parameters of resistive random access memory.
Xinghui Wu, Nana Cui, Qiuhui Zhang, Wenju Wang, Qixing Xu   +4 more
doaj   +1 more source

Revisiting Stability Criteria in Ball‐Milled High‐Entropy Alloys: Do Hume–Rothery and Thermodynamic Rules Equally Apply?

Advanced Engineering Materials, Volume 27, Issue 6, March 2025.
The stability criteria affecting the formation of high‐entropy alloys, particularly focusing in supersaturated solid solutions produced by mechanical alloying, are analyzed. Criteria based on Hume–Rothery rules are distinguished from those derived from thermodynamic relations. The formers are generally applicable to mechanically alloyed samples.
Javier S. Blázquez, Alejandro F. Manchón‐Gordón, Antonio Vidal‐Crespo, Rafael Caballero‐Flores, Jhon J. Ipus, Clara F. Conde   +5 more
wiley   +1 more source

Role of structural defects in olivine cathodes [PDF]

, 2012
The high rate capability and structural stability of the olivine phosphates attracted a lot of interest as promising cathode materials for high energy density batteries.
Kandhasamy, S., Nallathamby, K., Minakshi, M.   +2 more
core   +1 more source

Current Status and Challenges in Data Collection for Aerospace Coatings Deposited by Plasma Spraying

Advanced Engineering Materials, EarlyView.
An innovative approach has been integrated into the GRENAT project to optimize plasma spraying and coating performance. Raw materials are accelerated and melted in the plasma generated by torches, creating coatings. Monitoring sensors collect process data which are combined with ex situ characterization data.
Lila Randriamananjara, Vincent Rat, Quentin Dubreuil, Patrice Valorge, Simon Goutier, Alain Denoirjean, Olivier Messe, Céline Ruelle, Jean‐Philippe Poli   +8 more
wiley   +1 more source

Multi‐Ion Doping Controlled CEI Formation in Structurally‐Stable High‐Energy Monoclinic‐Phase NASICON Cathodes for Sodium‐Ion Batteries [PDF]

Overcoming the energy density limitations of sodium-ion batteries (NIBs) requires innovative strategies to optimize cathode materials. While entropy-engineering through multi-ion doping has shown promise, previous efforts in polyanion-type cathodes are ...
Pinjari, Sharad Dnyanu, Mudavath, Purandas, Arman, Tasdique, Mahalingam, Vignesh, Aarayil, Malavika, Ranganathan, Raghavan, Nanjundan, Ashok Kumar, Pal, Ipsita, Kundu, Dipan, Gaddam, Rohit Ranganathan   +9 more
core   +1 more source

Doping of ZnO thin film with Eu using ion beams [PDF]

, 2010
Modification of electric and magnetic properties of ZnO thin films was achieved by low energy Eu ion irradiation. The desired doping levels as well as the depth distribution of the dopant was controlled by the ion energy and the ion flux, following a ...
Yu, DH, Cohen, DD, Ionescu, M, Siegele, R, Photongkam, P, Li, S   +5 more
core   +1 more source

Recent Advances on F-Doped Layered Transition Metal Oxides for Sodium Ion Batteries

Molecules, 2023
With the development of social economy, using lithium-ion batteries in energy storage in industries such as large-scale electrochemical energy storage systems will cause lithium resources to no longer meet demand.
Hao Wang, Lifeng Zhou, Zhenyu Cheng, Liying Liu, Yisong Wang, Tao Du   +5 more
doaj   +1 more source

Luminescence of aluminoborosilicate glasses doped with Gd3+ ions [PDF]

Physics of the Solid State, 2010
The twophoton absorption that leads to the ultraviolet upconversion luminescence in the SiO2–Al2O3–B2O3–Na2O3–Zr2O : Gd3+ glass has been investigated. The inference has been made that no photon cascade emission takes place under excitation by monochromatic light corresponding to the maximum of the absorption band of the Cd3+ ion (204 nm).
Malchukova, Evguenia, Nepomnyashchikh, A., J., Boizot, Bruno, Shamirzaev, T., S., Petite, Guillaume   +4 more
openaire   +3 more sources