Dependence of the Magnetization Process on the Thickness of Fe<sub>70</sub>Pd<sub>30</sub> Nanostructured Thin Film
Fe–Pd magnetic shape-memory alloys are of major importance for microsystem applications due to their magnetically driven large reversible strains under moderate stresses. In this context, we focus on the synthesis of nanostructured Fe<sub>70</sub>Pd<sub>30</sub> shape-memory...
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doaj-94caf47e04f24a5e897e8e689190beb12020-12-19T00:03:01ZengMDPI AGMaterials1996-19442020-12-01135788578810.3390/ma13245788Dependence of the Magnetization Process on the Thickness of Fe<sub>70</sub>Pd<sub>30</sub> Nanostructured Thin FilmMohamed Salaheldeen0Ahmed Mohamed Abu-Dief1Lucía Martínez-Goyeneche2Seraj Omar Alzahrani3Fatmah Alkhatib4Pablo Álvarez-Alonso5Jesús Ángel Blanco6Physics Department, Faculty of Science, Sohag University, Sohag 82524, EgyptChemistry Department, College of Science, Taibah University, Madinah P.O. Box 344, Saudi ArabiaDepartamento de Física, Universidad de Oviedo, C/Calvo Sotelo 18, 33007 Oviedo, SpainChemistry Department, College of Science, Taibah University, Madinah P.O. Box 344, Saudi ArabiaChemistry Department, Faculty of Applied Science, Umm Al-Qura University, Makkah P.O. Box 715, Saudi ArabiaDepartamento de Física, Universidad de Oviedo, C/Calvo Sotelo 18, 33007 Oviedo, SpainDepartamento de Física, Universidad de Oviedo, C/Calvo Sotelo 18, 33007 Oviedo, SpainFe–Pd magnetic shape-memory alloys are of major importance for microsystem applications due to their magnetically driven large reversible strains under moderate stresses. In this context, we focus on the synthesis of nanostructured Fe<sub>70</sub>Pd<sub>30</sub> shape-memory alloy antidot array thin films with different layer thicknesses in the range from 20 nm to 80 nm, deposited onto nanostructured alumina membranes. A significant change in the magnetization process of nanostructured samples was detected by varying the layer thickness. The in-plane coercivity for the antidot array samples increased with decreasing layer thickness, whereas for non-patterned films the coercive field decreased. Anomalous coercivity dependence with temperature was detected for thinner antidot array samples, observing a critical temperature at which the in-plane coercivity behavior changed. A significant reduction in the Curie temperature for antidot samples with thinner layer thicknesses was observed. We attribute these effects to complex magnetization reversal processes and the three-dimensional magnetization profile induced by the nanoholes. These findings could be of major interest in the development of novel magnetic sensors and thermo-magnetic recording patterned media based on template-assisted deposition techniques.https://www.mdpi.com/1996-1944/13/24/5788nanoporous alumina templatesantidot arraysKerr effectCurie temperatureFe<sub>70</sub>Pd<sub>30</sub> shape-memory alloy |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Mohamed Salaheldeen Ahmed Mohamed Abu-Dief Lucía Martínez-Goyeneche Seraj Omar Alzahrani Fatmah Alkhatib Pablo Álvarez-Alonso Jesús Ángel Blanco |
spellingShingle |
Mohamed Salaheldeen Ahmed Mohamed Abu-Dief Lucía Martínez-Goyeneche Seraj Omar Alzahrani Fatmah Alkhatib Pablo Álvarez-Alonso Jesús Ángel Blanco Dependence of the Magnetization Process on the Thickness of Fe<sub>70</sub>Pd<sub>30</sub> Nanostructured Thin Film Materials nanoporous alumina templates antidot arrays Kerr effect Curie temperature Fe<sub>70</sub>Pd<sub>30</sub> shape-memory alloy |
author_facet |
Mohamed Salaheldeen Ahmed Mohamed Abu-Dief Lucía Martínez-Goyeneche Seraj Omar Alzahrani Fatmah Alkhatib Pablo Álvarez-Alonso Jesús Ángel Blanco |
author_sort |
Mohamed Salaheldeen |
title |
Dependence of the Magnetization Process on the Thickness of Fe<sub>70</sub>Pd<sub>30</sub> Nanostructured Thin Film |
title_short |
Dependence of the Magnetization Process on the Thickness of Fe<sub>70</sub>Pd<sub>30</sub> Nanostructured Thin Film |
title_full |
Dependence of the Magnetization Process on the Thickness of Fe<sub>70</sub>Pd<sub>30</sub> Nanostructured Thin Film |
title_fullStr |
Dependence of the Magnetization Process on the Thickness of Fe<sub>70</sub>Pd<sub>30</sub> Nanostructured Thin Film |
title_full_unstemmed |
Dependence of the Magnetization Process on the Thickness of Fe<sub>70</sub>Pd<sub>30</sub> Nanostructured Thin Film |
title_sort |
dependence of the magnetization process on the thickness of fe<sub>70</sub>pd<sub>30</sub> nanostructured thin film |
publisher |
MDPI AG |
series |
Materials |
issn |
1996-1944 |
publishDate |
2020-12-01 |
description |
Fe–Pd magnetic shape-memory alloys are of major importance for microsystem applications due to their magnetically driven large reversible strains under moderate stresses. In this context, we focus on the synthesis of nanostructured Fe<sub>70</sub>Pd<sub>30</sub> shape-memory alloy antidot array thin films with different layer thicknesses in the range from 20 nm to 80 nm, deposited onto nanostructured alumina membranes. A significant change in the magnetization process of nanostructured samples was detected by varying the layer thickness. The in-plane coercivity for the antidot array samples increased with decreasing layer thickness, whereas for non-patterned films the coercive field decreased. Anomalous coercivity dependence with temperature was detected for thinner antidot array samples, observing a critical temperature at which the in-plane coercivity behavior changed. A significant reduction in the Curie temperature for antidot samples with thinner layer thicknesses was observed. We attribute these effects to complex magnetization reversal processes and the three-dimensional magnetization profile induced by the nanoholes. These findings could be of major interest in the development of novel magnetic sensors and thermo-magnetic recording patterned media based on template-assisted deposition techniques. |
topic |
nanoporous alumina templates antidot arrays Kerr effect Curie temperature Fe<sub>70</sub>Pd<sub>30</sub> shape-memory alloy |
url |
https://www.mdpi.com/1996-1944/13/24/5788 |
work_keys_str_mv |
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