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Flexible ε-Fe(2)O(3)-Terephthalate Thin-Film Magnets through ALD/MLD
[Image: see text] Pliable and lightweight thin-film magnets performing at room temperature are indispensable ingredients of the next-generation flexible electronics. However, conventional inorganic magnets based on f-block metals are rigid and heavy, whereas the emerging organic/molecular magnets ar...
Autores principales: | , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American
Chemical Society
2020
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7685534/ https://www.ncbi.nlm.nih.gov/pubmed/32324991 http://dx.doi.org/10.1021/acsami.0c04665 |
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author | Philip, Anish Niemelä, Janne-Petteri Tewari, Girish C Putz, Barbara Edwards, Thomas Edward James Itoh, Mitsuru Utke, Ivo Karppinen, Maarit |
author_facet | Philip, Anish Niemelä, Janne-Petteri Tewari, Girish C Putz, Barbara Edwards, Thomas Edward James Itoh, Mitsuru Utke, Ivo Karppinen, Maarit |
author_sort | Philip, Anish |
collection | PubMed |
description | [Image: see text] Pliable and lightweight thin-film magnets performing at room temperature are indispensable ingredients of the next-generation flexible electronics. However, conventional inorganic magnets based on f-block metals are rigid and heavy, whereas the emerging organic/molecular magnets are inferior regarding their magnetic characteristics. Here we fuse the best features of the two worlds, by tailoring ε-Fe(2)O(3)-terephthalate superlattice thin films with inbuilt flexibility due to the thin organic layers intimately embedded within the ferrimagnetic ε-Fe(2)O(3) matrix; these films are also sustainable as they do not contain rare heavy metals. The films are grown with sub-nanometer-scale accuracy from gaseous precursors using the atomic/molecular layer deposition (ALD/MLD) technique. Tensile tests confirm the expected increased flexibility with increasing organic content reaching a 3-fold decrease in critical bending radius (2.4 ± 0.3 mm) as compared to ε-Fe(2)O(3) thin film (7.7 ± 0.3 mm). Most remarkably, these hybrid ε-Fe(2)O(3)-terephthalate films do not compromise the exceptional intrinsic magnetic characteristics of the ε-Fe(2)O(3) phase, in particular the ultrahigh coercive force (∼2 kOe) even at room temperature. |
format | Online Article Text |
id | pubmed-7685534 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | American
Chemical Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-76855342020-11-25 Flexible ε-Fe(2)O(3)-Terephthalate Thin-Film Magnets through ALD/MLD Philip, Anish Niemelä, Janne-Petteri Tewari, Girish C Putz, Barbara Edwards, Thomas Edward James Itoh, Mitsuru Utke, Ivo Karppinen, Maarit ACS Appl Mater Interfaces [Image: see text] Pliable and lightweight thin-film magnets performing at room temperature are indispensable ingredients of the next-generation flexible electronics. However, conventional inorganic magnets based on f-block metals are rigid and heavy, whereas the emerging organic/molecular magnets are inferior regarding their magnetic characteristics. Here we fuse the best features of the two worlds, by tailoring ε-Fe(2)O(3)-terephthalate superlattice thin films with inbuilt flexibility due to the thin organic layers intimately embedded within the ferrimagnetic ε-Fe(2)O(3) matrix; these films are also sustainable as they do not contain rare heavy metals. The films are grown with sub-nanometer-scale accuracy from gaseous precursors using the atomic/molecular layer deposition (ALD/MLD) technique. Tensile tests confirm the expected increased flexibility with increasing organic content reaching a 3-fold decrease in critical bending radius (2.4 ± 0.3 mm) as compared to ε-Fe(2)O(3) thin film (7.7 ± 0.3 mm). Most remarkably, these hybrid ε-Fe(2)O(3)-terephthalate films do not compromise the exceptional intrinsic magnetic characteristics of the ε-Fe(2)O(3) phase, in particular the ultrahigh coercive force (∼2 kOe) even at room temperature. American Chemical Society 2020-04-23 2020-05-13 /pmc/articles/PMC7685534/ /pubmed/32324991 http://dx.doi.org/10.1021/acsami.0c04665 Text en This is an open access article published under a Creative Commons Attribution (CC-BY) License (http://pubs.acs.org/page/policy/authorchoice_ccby_termsofuse.html) , which permits unrestricted use, distribution and reproduction in any medium, provided the author and source are cited. |
spellingShingle | Philip, Anish Niemelä, Janne-Petteri Tewari, Girish C Putz, Barbara Edwards, Thomas Edward James Itoh, Mitsuru Utke, Ivo Karppinen, Maarit Flexible ε-Fe(2)O(3)-Terephthalate Thin-Film Magnets through ALD/MLD |
title | Flexible
ε-Fe(2)O(3)-Terephthalate Thin-Film
Magnets through ALD/MLD |
title_full | Flexible
ε-Fe(2)O(3)-Terephthalate Thin-Film
Magnets through ALD/MLD |
title_fullStr | Flexible
ε-Fe(2)O(3)-Terephthalate Thin-Film
Magnets through ALD/MLD |
title_full_unstemmed | Flexible
ε-Fe(2)O(3)-Terephthalate Thin-Film
Magnets through ALD/MLD |
title_short | Flexible
ε-Fe(2)O(3)-Terephthalate Thin-Film
Magnets through ALD/MLD |
title_sort | flexible
ε-fe(2)o(3)-terephthalate thin-film
magnets through ald/mld |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7685534/ https://www.ncbi.nlm.nih.gov/pubmed/32324991 http://dx.doi.org/10.1021/acsami.0c04665 |
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