Results 101 to 110 of about 1,402,532 (353)

Instability of metal-insulator transition against thermal cycling in phase separated Cr-doped manganites

, 2001
We show that metal-insulator transition in Pr0.5Ca0.5Mn1-xCrxO3 (x = 0.015-0.025) is unstable against thermal cycling. Insulator-metal transition shifts down and low temperature resistivity increases each time when the sample is cycled between a starting
A. Anane, A. J. Millis, A. J. Millis, A. Maignan, A. Maignan, A. Moreo, A. P. Ramirez, A. Urushibara, B. Raveau, B. Raveau, C. Michel, D. P. Dunne, E. M. Levin, G. Allodi, H. Roder, H. Y. Hwang, I. Webman, J. A. Mydosh, J. Fontcuberta, J. M. D. Coey, J. M. D. Coey, L. Sheng, M. A. Fradkin, M. Hervieu, M. J. Bigeon, M. R. Ibarra, M. Roy, M. Uehara, N. A. Babushkina, Q. Huang, R. Mahendiran, R. Mahendiran, R. Mahendiran, R. Mahendiran, S. Mori, T. Katsufuji, T. Kimura, W. Cao, Y. Moritomo   +38 more
core   +1 more source

Experimental Evaluation of 100Cr6 Steel Microindented Surfaces Under Lubricated Nonconformal Point Contacts

Advanced Engineering Materials, EarlyView.
The tribological behavior of 100Cr6 steel spheres textured via Vickers microindentation is evaluated under lubricated sliding by varying both dimple size and density. Fine and dense textures significantly reduce friction across all lubrication regimes, while large dimples increase it.
Farideh Davoodi, Pasquale Guglielmi, Gianfranco Palumbo, Giuseppe Carbone   +3 more
wiley   +1 more source

Synthesis of Transition Metal-Nanochitosan Composites Using Ni, Cu, Zn, and Ag Metal Ions and Applications as Antibacterial Agents

International Journal of Technology
Nanocomposites are used as antibacterial agents in the pharmacology sector. Therefore, this research aimed to investigate the synthesis, characterization, and antibacterial activity of the transition metal-nanochitosan composites (TM-NCs) using Ni ...
Khoirina Dwi Nugrahaningtyas, Eny Kusrini, Salwa Salsabila, Dina Fitriana, Anwar Usman, Triana Kusumaningsih, Sri Juari Santoso   +6 more
doaj   +1 more source

Dephasing and Metal-Insulator Transition

, 2000
The metal-insulator transition (MIT) observed in two-dimensional (2D) systems is apparently contradictory to the well known scaling theory of localization.
B.L. Altshuler, B.L. Altshuler, B.S. Andereck, E. Abrahams, Junren Shi, Junren Shi, M. Büttiker, M.Y. Simmons, P. Mohanty, P. Mohanty, S. Das Sarma, S. Datta, S.V. Kravchenko, S.V. Kravchenko, Song He, X. C. Xie, Y. Meir   +16 more
core   +1 more source

Harnessing Fungal Biowelding for Constructing Mycelium‐Engineered Materials

Advanced Engineering Materials, EarlyView.
Mycelium‐bound composites (MBCs) offer low‐carbon alternatives for construction, yet interfacial bonding remains a critical challenge. This review examines fungal biowelding as a biocompatible adhesive, elucidating mycelium‐mediated interfacial mechanisms and their role in material assembly. Strategies to optimize biowelding are discussed, highlighting
Xue Brenda Bai, Xinrui Sarah Niu, Zhao Qin   +2 more
wiley   +1 more source

Realizing Topological Superconductivity in Tunable Bose-Fermi Mixtures with Transition Metal Dichalcogenide Heterostructures [PDF]

, 2023
Caterina Zerba, Clemens Kuhlenkamp, Ataç Îmamoğlu, Michael Knap   +3 more
openalex   +1 more source

Low‐Cost, Large‐Scale Nanoporous Metals by Mechanical Alloying, Oxide Reduction, and Dealloying of Powders

Advanced Engineering Materials, EarlyView.
Powder metal processing provides scalable advantages in nanoporous (np) metal development. Mechanical alloying is used to produce unique precursors for hybrid nanopore formation by oxide reduction and dealloying. As demonstrated in np Ag, this approach improves process efficiency while promoting smaller ligaments and larger pores, both of which are ...
Mark A. Atwater, Oliver A. Fowler
wiley   +1 more source

Complex Transition-Metal Hydrides

CHIMIA, 1998
Complex transition-metal hydrides provide new opportunities for hydrogen storage. Their hydrogen-to-metal ratios reach values of up to H/M = 4.5 (BaReH9) and thus surpass the hydrogen-to-carbon ratios of hydrocarbons (methane: H/C = 4); their ...
Klaus Yvon
doaj  

The Adsorption Behavior of Gas Molecules on Mn/N- and Mn-Doped Graphene

Nanomaterials
By using density functional theory (DFT), the adsorption behavior of gas molecules on defective graphene doped with manganese and nitrogen were investigated.
Tingyue Xie, Cuifeng Tian, Ping Wang, Guozheng Zhao   +3 more
doaj   +1 more source

Erratum: First-principles calculation of the structural stability of6dtransition metals [Phys. Rev. B84, 113104 (2011)] [PDF]

, 2011
A. Östlin, Levente Vitos
openalex   +1 more source