We investigate the formation of nanostructures in 2D strained alloys on face centered cubic (111) surfaces by means of equilibrium Monte Carlo simulations. In the framework of an off-lattice model, we consider one monolayer of two bulk-immiscible adsorbates A and B with negative and positive misfit relative to the substrate, respectively. Simulations show that the adsorbates partly self-organize into island or stripe-like patterns. We show how these structures depend on the relative misfits, interaction, and concentration of components. The morphology is quite different for phase separation and intermixing regimes.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1088/0953-8984/20/26/265004 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Synergistic Contribution of the Strain and Magnetic Field in Ferromagnetic NiMnIn Heusler Alloy Films for the Hydrogen Evolution Reaction.
ACS Appl Mater Interfaces
December 2024
School of Physics, Southeast University, Nanjing 211189, China.
The external field-assisted hydrogen evolution reaction (HER), beyond modifying electrocatalysts themselves, has garnered significant research attention. However, achieving synergy between multiple fields to enhance the HER performance remains challenging and is not well-explored. Here, NiMnIn Heusler alloy thin films are fabricated using pulsed laser deposition on flexional Cu substrates.
View Article and Find Full Text PDFCoherent solvus of disordered alkali feldspar: experiment, atom probe tomography and thermodynamic model.
Contrib Mineral Petrol
June 2024
Department of Lithospheric Research, University of Vienna, Vienna, Austria.
Unlabelled: At temperatures above about 600 °C, alkali feldspar forms a continuous solid solution between the Na and K end members. Towards lower temperatures a miscibility gap opens, and alkali feldspar of intermediate composition exsolves, forming an intergrowth of relatively more Na-rich and K-rich lamellae. During exsolution, the crystal structure usually remains coherent across the lamellar interfaces, a feature that may be preserved over geological times.
View Article and Find Full Text PDFLocal-strain-induced CO adsorption geometries and electrochemical reduction pathway shift.
Natl Sci Rev
December 2024
College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China.
Unravelling the influence of strain and geometric effects on the electrochemical reduction of carbon dioxide (CORR) on Cu-based (or Pd-based) alloys remains challenging due to complex local microenvironment variables. Herein, we employ two PdCu alloys (nanoparticles and nanodendrites) to demonstrate how CORR selectivity can shift from CO to HCOO. Despite sharing consistent phases, exposed crystal facets, and overall oxidative states, these alloys exhibit different local strain profiles due to their distinct geometries.
View Article and Find Full Text PDFNitrogen Complex-Driven Vacancy Cluster in Group-III Nitrides.
ACS Appl Mater Interfaces
November 2024
Samsung Display Co., LTD., Yongin-si 17113, Republic of Korea.
A series of experiments have elucidated the primary defects in group-III nitride epilayers, identifying vacancy clusters due to cation migration at interfaces to mitigate strained lattice. While the occurrence of these defects is well-documented, the underlying electronic mechanisms driving vacancy agglomeration in nitrides and their alloys remain poorly understood. In this study, we uncovered a previously unreported ground state of two metal vacancies driven by the migration of kinetically unstable nitrogen atoms using an approach.
View Article and Find Full Text PDFEffect of Thermomechanical Processing Induced Retained Strain on , Biodegradation Response and Cytocompatibility of Mg Alloy.
ACS Biomater Sci Eng
October 2024
Department of Metallurgical and Materials Engineering, Indian Institute of Technology, Kharagpur 721302, India.
The implications of retained strain on and degradation behavior as well as cytocompatibility of the Mg-4Zn-0.5Ca-0.8Mn alloy is comprehensively studied.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!