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Magnetization amplified by structural disorder within nanometre-scale interface region
Direct magnetization measurements from narrow, complex-shaped antiphase boundaries (APBs; that is, planar defect produced in any ordered crystals) are vitally important for advances in materials science and engineering. However, in-depth examination of APBs has been hampered by the lack of experimen...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Pub. Group
2014
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4083443/ https://www.ncbi.nlm.nih.gov/pubmed/24939746 http://dx.doi.org/10.1038/ncomms5133 |
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author | Murakami, Y. Niitsu, K. Tanigaki, T. Kainuma, R. Park, H. S. Shindo, D. |
author_facet | Murakami, Y. Niitsu, K. Tanigaki, T. Kainuma, R. Park, H. S. Shindo, D. |
author_sort | Murakami, Y. |
collection | PubMed |
description | Direct magnetization measurements from narrow, complex-shaped antiphase boundaries (APBs; that is, planar defect produced in any ordered crystals) are vitally important for advances in materials science and engineering. However, in-depth examination of APBs has been hampered by the lack of experimental tools. Here, based on electron microscopy observations, we report the unusual relationship between APBs and ferromagnetic spin order in Fe(70)Al(30). Thermally induced APBs show a finite width (2–3 nm), within which significant atomic disordering occurs. Electron holography studies revealed an unexpectedly large magnetic flux density at the APBs, amplified by approximately 60% (at 293 K) compared with the matrix value. At elevated temperatures, the specimens showed a peculiar spin texture wherein the ferromagnetic phase was confined within the APB region. These observations demonstrate ferromagnetism stabilized by structural disorder within APBs, which is in direct contrast to the traditional understanding. The results accordingly provide rich conceptual insights for engineering APB-induced phenomena. |
format | Online Article Text |
id | pubmed-4083443 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2014 |
publisher | Nature Pub. Group |
record_format | MEDLINE/PubMed |
spelling | pubmed-40834432014-07-09 Magnetization amplified by structural disorder within nanometre-scale interface region Murakami, Y. Niitsu, K. Tanigaki, T. Kainuma, R. Park, H. S. Shindo, D. Nat Commun Article Direct magnetization measurements from narrow, complex-shaped antiphase boundaries (APBs; that is, planar defect produced in any ordered crystals) are vitally important for advances in materials science and engineering. However, in-depth examination of APBs has been hampered by the lack of experimental tools. Here, based on electron microscopy observations, we report the unusual relationship between APBs and ferromagnetic spin order in Fe(70)Al(30). Thermally induced APBs show a finite width (2–3 nm), within which significant atomic disordering occurs. Electron holography studies revealed an unexpectedly large magnetic flux density at the APBs, amplified by approximately 60% (at 293 K) compared with the matrix value. At elevated temperatures, the specimens showed a peculiar spin texture wherein the ferromagnetic phase was confined within the APB region. These observations demonstrate ferromagnetism stabilized by structural disorder within APBs, which is in direct contrast to the traditional understanding. The results accordingly provide rich conceptual insights for engineering APB-induced phenomena. Nature Pub. Group 2014-06-18 /pmc/articles/PMC4083443/ /pubmed/24939746 http://dx.doi.org/10.1038/ncomms5133 Text en Copyright © 2014, Nature Publishing Group, a division of Macmillan Publishers Limited. All Rights Reserved. http://creativecommons.org/licenses/by-nc-nd/3.0/ This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International License. The images or other third party material in this article are included in the article's Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-nd/4.0/ |
spellingShingle | Article Murakami, Y. Niitsu, K. Tanigaki, T. Kainuma, R. Park, H. S. Shindo, D. Magnetization amplified by structural disorder within nanometre-scale interface region |
title | Magnetization amplified by structural disorder within nanometre-scale interface region |
title_full | Magnetization amplified by structural disorder within nanometre-scale interface region |
title_fullStr | Magnetization amplified by structural disorder within nanometre-scale interface region |
title_full_unstemmed | Magnetization amplified by structural disorder within nanometre-scale interface region |
title_short | Magnetization amplified by structural disorder within nanometre-scale interface region |
title_sort | magnetization amplified by structural disorder within nanometre-scale interface region |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4083443/ https://www.ncbi.nlm.nih.gov/pubmed/24939746 http://dx.doi.org/10.1038/ncomms5133 |
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