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Título: | Magnetism, microstructure and First Principles calculations of atomized and annealed Ni3Al |
Autor: | García Escorial, Asunción CSIC ORCID ; Crespo, P.; Hernando, A.; Lieblich, Marcela CSIC ORCID ; Marín, P.; Velasco, V.; Ynduráin, F. | Palabras clave: | Atomization Magnetism Microstructure Calculations |
Fecha de publicación: | 2014 | Editor: | Elsevier | Citación: | Journal of Alloys and Compounds 615: S645- S647 (2015) | Resumen: | © 2014 Elsevier B.V. All rights reserved. In this work Ni3Al powder particles obtained by atomization were characterized magnetically and microstructurally in as-atomized state and after annealing. Upon annealing the X-ray diffraction patterns show a noticeable increase of the signal of the ordered phase γ′-Ni3Al, L12, phase and the microstructure evolves from a lamellar and dendrite to a large grain microstructure. The Curie temperature of the as-atomized powder particles is 85 K and decreases after annealing down to 50 K. First Principles calculations were carried out to correlate the experimental observations with local order of Ni and Al atoms and illustrate the importance of the local order in the density of states at the Fermi level, showing how the magnetic moment depends on the Ni and Al atomic position. | URI: | http://hdl.handle.net/10261/112849 | DOI: | 10.1016/j.jallcom.2014.01.124 | Identificadores: | doi: 10.1016/j.jallcom.2014.01.124 issn: 0925-8388 |
Aparece en las colecciones: | (CENIM) Artículos |
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