Anomalous enhancement in interfacial perpendicular magnetic anisotropy through uphill diffusion

We observed interfacial chemical sharpening due to uphill diffusion in post annealed ultrathin multilayer stack of Co and Pt, which leads to enhanced interfacial perpendicular magnetic anisotropy (PMA). This is surprising as these elements are considered as perfectly miscible. This chemical sharpeni...

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Autores principales: Das, Tanmay, Kulkarni, Prabhanjan D., Purandare, S. C., Barshilia, Harish C., Bhattacharyya, Somnath, Chowdhury, Prasanta
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2014
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4060506/
https://www.ncbi.nlm.nih.gov/pubmed/24937637
http://dx.doi.org/10.1038/srep05328
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author Das, Tanmay
Kulkarni, Prabhanjan D.
Purandare, S. C.
Barshilia, Harish C.
Bhattacharyya, Somnath
Chowdhury, Prasanta
author_facet Das, Tanmay
Kulkarni, Prabhanjan D.
Purandare, S. C.
Barshilia, Harish C.
Bhattacharyya, Somnath
Chowdhury, Prasanta
author_sort Das, Tanmay
collection PubMed
description We observed interfacial chemical sharpening due to uphill diffusion in post annealed ultrathin multilayer stack of Co and Pt, which leads to enhanced interfacial perpendicular magnetic anisotropy (PMA). This is surprising as these elements are considered as perfectly miscible. This chemical sharpening was confirmed through quantitative energy dispersive x-ray (EDX) spectroscopy and intensity distribution of images taken on high angle annular dark field (HAADF) detector in Scanning Transmission Electron Microscopic (STEM) mode. This observation demonstrates an evidence of miscibility gap in ultrathin coherent Co/Pt multilayer stacks.
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spelling pubmed-40605062014-06-18 Anomalous enhancement in interfacial perpendicular magnetic anisotropy through uphill diffusion Das, Tanmay Kulkarni, Prabhanjan D. Purandare, S. C. Barshilia, Harish C. Bhattacharyya, Somnath Chowdhury, Prasanta Sci Rep Article We observed interfacial chemical sharpening due to uphill diffusion in post annealed ultrathin multilayer stack of Co and Pt, which leads to enhanced interfacial perpendicular magnetic anisotropy (PMA). This is surprising as these elements are considered as perfectly miscible. This chemical sharpening was confirmed through quantitative energy dispersive x-ray (EDX) spectroscopy and intensity distribution of images taken on high angle annular dark field (HAADF) detector in Scanning Transmission Electron Microscopic (STEM) mode. This observation demonstrates an evidence of miscibility gap in ultrathin coherent Co/Pt multilayer stacks. Nature Publishing Group 2014-06-17 /pmc/articles/PMC4060506/ /pubmed/24937637 http://dx.doi.org/10.1038/srep05328 Text en Copyright © 2014, Macmillan Publishers Limited. All rights reserved http://creativecommons.org/licenses/by-nc-nd/4.0/ 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 in order to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-nd/4.0/
spellingShingle Article
Das, Tanmay
Kulkarni, Prabhanjan D.
Purandare, S. C.
Barshilia, Harish C.
Bhattacharyya, Somnath
Chowdhury, Prasanta
Anomalous enhancement in interfacial perpendicular magnetic anisotropy through uphill diffusion
title Anomalous enhancement in interfacial perpendicular magnetic anisotropy through uphill diffusion
title_full Anomalous enhancement in interfacial perpendicular magnetic anisotropy through uphill diffusion
title_fullStr Anomalous enhancement in interfacial perpendicular magnetic anisotropy through uphill diffusion
title_full_unstemmed Anomalous enhancement in interfacial perpendicular magnetic anisotropy through uphill diffusion
title_short Anomalous enhancement in interfacial perpendicular magnetic anisotropy through uphill diffusion
title_sort anomalous enhancement in interfacial perpendicular magnetic anisotropy through uphill diffusion
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4060506/
https://www.ncbi.nlm.nih.gov/pubmed/24937637
http://dx.doi.org/10.1038/srep05328
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