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Prediction and synthesis of a family of atomic laminate phases with Kagomé-like and in-plane chemical ordering

The enigma of MAX phases and their hybrids prevails. We probe transition metal (M) alloying in MAX phases for metal size, electronegativity, and electron configuration, and discover ordering in these MAX hybrids, namely, (V(2/3)Zr(1/3))(2)AlC and (Mo(2/3)Y(1/3))(2)AlC. Predictive theory and verifyin...

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Autores principales: Dahlqvist, Martin, Lu, Jun, Meshkian, Rahele, Tao, Quanzheng, Hultman, Lars, Rosen, Johanna
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Association for the Advancement of Science 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5517111/
https://www.ncbi.nlm.nih.gov/pubmed/28776034
http://dx.doi.org/10.1126/sciadv.1700642
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author Dahlqvist, Martin
Lu, Jun
Meshkian, Rahele
Tao, Quanzheng
Hultman, Lars
Rosen, Johanna
author_facet Dahlqvist, Martin
Lu, Jun
Meshkian, Rahele
Tao, Quanzheng
Hultman, Lars
Rosen, Johanna
author_sort Dahlqvist, Martin
collection PubMed
description The enigma of MAX phases and their hybrids prevails. We probe transition metal (M) alloying in MAX phases for metal size, electronegativity, and electron configuration, and discover ordering in these MAX hybrids, namely, (V(2/3)Zr(1/3))(2)AlC and (Mo(2/3)Y(1/3))(2)AlC. Predictive theory and verifying materials synthesis, including a judicious choice of alloying M from groups III to VI and periods 4 and 5, indicate a potentially large family of thermodynamically stable phases, with Kagomé-like and in-plane chemical ordering, and with incorporation of elements previously not known for MAX phases, including the common Y. We propose the structure to be monoclinic C2/c. As an extension of the work, we suggest a matching set of novel MXenes, from selective etching of the A-element. The demonstrated structural design on simultaneous two-dimensional (2D) and 3D atomic levels expands the property tuning potential of functional materials.
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spelling pubmed-55171112017-08-03 Prediction and synthesis of a family of atomic laminate phases with Kagomé-like and in-plane chemical ordering Dahlqvist, Martin Lu, Jun Meshkian, Rahele Tao, Quanzheng Hultman, Lars Rosen, Johanna Sci Adv Research Articles The enigma of MAX phases and their hybrids prevails. We probe transition metal (M) alloying in MAX phases for metal size, electronegativity, and electron configuration, and discover ordering in these MAX hybrids, namely, (V(2/3)Zr(1/3))(2)AlC and (Mo(2/3)Y(1/3))(2)AlC. Predictive theory and verifying materials synthesis, including a judicious choice of alloying M from groups III to VI and periods 4 and 5, indicate a potentially large family of thermodynamically stable phases, with Kagomé-like and in-plane chemical ordering, and with incorporation of elements previously not known for MAX phases, including the common Y. We propose the structure to be monoclinic C2/c. As an extension of the work, we suggest a matching set of novel MXenes, from selective etching of the A-element. The demonstrated structural design on simultaneous two-dimensional (2D) and 3D atomic levels expands the property tuning potential of functional materials. American Association for the Advancement of Science 2017-07-19 /pmc/articles/PMC5517111/ /pubmed/28776034 http://dx.doi.org/10.1126/sciadv.1700642 Text en Copyright © 2017 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC). http://creativecommons.org/licenses/by-nc/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial license (http://creativecommons.org/licenses/by-nc/4.0/) , which permits use, distribution, and reproduction in any medium, so long as the resultant use is not for commercial advantage and provided the original work is properly cited.
spellingShingle Research Articles
Dahlqvist, Martin
Lu, Jun
Meshkian, Rahele
Tao, Quanzheng
Hultman, Lars
Rosen, Johanna
Prediction and synthesis of a family of atomic laminate phases with Kagomé-like and in-plane chemical ordering
title Prediction and synthesis of a family of atomic laminate phases with Kagomé-like and in-plane chemical ordering
title_full Prediction and synthesis of a family of atomic laminate phases with Kagomé-like and in-plane chemical ordering
title_fullStr Prediction and synthesis of a family of atomic laminate phases with Kagomé-like and in-plane chemical ordering
title_full_unstemmed Prediction and synthesis of a family of atomic laminate phases with Kagomé-like and in-plane chemical ordering
title_short Prediction and synthesis of a family of atomic laminate phases with Kagomé-like and in-plane chemical ordering
title_sort prediction and synthesis of a family of atomic laminate phases with kagomé-like and in-plane chemical ordering
topic Research Articles
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5517111/
https://www.ncbi.nlm.nih.gov/pubmed/28776034
http://dx.doi.org/10.1126/sciadv.1700642
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