Cargando…
Giant Magnetoresistance and Magneto-Thermopower in 3D Interconnected Ni(x)Fe(1−x)/Cu Multilayered Nanowire Networks
The versatility of the template-assisted electrodeposition technique to fabricate complex three-dimensional networks made of interconnected nanowires allows one to easily stack ferromagnetic and non-magnetic metallic layers along the nanowire axis. This leads to the fabrication of unique multilayere...
Autores principales: | , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2021
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8146549/ https://www.ncbi.nlm.nih.gov/pubmed/33925733 http://dx.doi.org/10.3390/nano11051133 |
_version_ | 1783697423330181120 |
---|---|
author | Marchal, Nicolas da Câmara Santa Clara Gomes, Tristan Abreu Araujo, Flavio Piraux, Luc |
author_facet | Marchal, Nicolas da Câmara Santa Clara Gomes, Tristan Abreu Araujo, Flavio Piraux, Luc |
author_sort | Marchal, Nicolas |
collection | PubMed |
description | The versatility of the template-assisted electrodeposition technique to fabricate complex three-dimensional networks made of interconnected nanowires allows one to easily stack ferromagnetic and non-magnetic metallic layers along the nanowire axis. This leads to the fabrication of unique multilayered nanowire network films showing giant magnetoresistance effect in the current-perpendicular-to-plane configuration that can be reliably measured along the macroscopic in-plane direction of the films. Moreover, the system also enables reliable measurements of the analogous magneto-thermoelectric properties of the multilayered nanowire networks. Here, three-dimensional interconnected Ni [Formula: see text] Fe [Formula: see text] /Cu multilayered nanowire networks (with [Formula: see text]) are fabricated and characterized, leading to large magnetoresistance and magneto-thermopower ratios up to 17% and −25% in Ni [Formula: see text] Fe [Formula: see text] /Cu, respectively. A strong contrast is observed between the amplitudes of magnetoresistance and magneto-thermoelectric effects depending on the Ni content of the NiFe alloys. In particular, for the highest Ni concentrations, a strong increase in the magneto-thermoelectric effect is observed, more than a factor of 7 larger than the magnetoresistive effect for Ni [Formula: see text] Fe [Formula: see text] /Cu multilayers. This sharp increase is mainly due to an increase in the spin-dependent Seebeck coefficient from −7 µV/K for the Ni [Formula: see text] Fe [Formula: see text] /Cu and Ni [Formula: see text] Fe [Formula: see text] /Cu nanowire arrays to −21 µV/K for the Ni [Formula: see text] Fe [Formula: see text] /Cu nanowire array. The enhancement of the magneto-thermoelectric effect for multilayered nanowire networks based on dilute Ni alloys is promising for obtaining a flexible magnetic switch for thermoelectric generation for potential applications in heat management or logic devices using thermal energy. |
format | Online Article Text |
id | pubmed-8146549 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-81465492021-05-26 Giant Magnetoresistance and Magneto-Thermopower in 3D Interconnected Ni(x)Fe(1−x)/Cu Multilayered Nanowire Networks Marchal, Nicolas da Câmara Santa Clara Gomes, Tristan Abreu Araujo, Flavio Piraux, Luc Nanomaterials (Basel) Article The versatility of the template-assisted electrodeposition technique to fabricate complex three-dimensional networks made of interconnected nanowires allows one to easily stack ferromagnetic and non-magnetic metallic layers along the nanowire axis. This leads to the fabrication of unique multilayered nanowire network films showing giant magnetoresistance effect in the current-perpendicular-to-plane configuration that can be reliably measured along the macroscopic in-plane direction of the films. Moreover, the system also enables reliable measurements of the analogous magneto-thermoelectric properties of the multilayered nanowire networks. Here, three-dimensional interconnected Ni [Formula: see text] Fe [Formula: see text] /Cu multilayered nanowire networks (with [Formula: see text]) are fabricated and characterized, leading to large magnetoresistance and magneto-thermopower ratios up to 17% and −25% in Ni [Formula: see text] Fe [Formula: see text] /Cu, respectively. A strong contrast is observed between the amplitudes of magnetoresistance and magneto-thermoelectric effects depending on the Ni content of the NiFe alloys. In particular, for the highest Ni concentrations, a strong increase in the magneto-thermoelectric effect is observed, more than a factor of 7 larger than the magnetoresistive effect for Ni [Formula: see text] Fe [Formula: see text] /Cu multilayers. This sharp increase is mainly due to an increase in the spin-dependent Seebeck coefficient from −7 µV/K for the Ni [Formula: see text] Fe [Formula: see text] /Cu and Ni [Formula: see text] Fe [Formula: see text] /Cu nanowire arrays to −21 µV/K for the Ni [Formula: see text] Fe [Formula: see text] /Cu nanowire array. The enhancement of the magneto-thermoelectric effect for multilayered nanowire networks based on dilute Ni alloys is promising for obtaining a flexible magnetic switch for thermoelectric generation for potential applications in heat management or logic devices using thermal energy. MDPI 2021-04-27 /pmc/articles/PMC8146549/ /pubmed/33925733 http://dx.doi.org/10.3390/nano11051133 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Marchal, Nicolas da Câmara Santa Clara Gomes, Tristan Abreu Araujo, Flavio Piraux, Luc Giant Magnetoresistance and Magneto-Thermopower in 3D Interconnected Ni(x)Fe(1−x)/Cu Multilayered Nanowire Networks |
title | Giant Magnetoresistance and Magneto-Thermopower in 3D Interconnected Ni(x)Fe(1−x)/Cu Multilayered Nanowire Networks |
title_full | Giant Magnetoresistance and Magneto-Thermopower in 3D Interconnected Ni(x)Fe(1−x)/Cu Multilayered Nanowire Networks |
title_fullStr | Giant Magnetoresistance and Magneto-Thermopower in 3D Interconnected Ni(x)Fe(1−x)/Cu Multilayered Nanowire Networks |
title_full_unstemmed | Giant Magnetoresistance and Magneto-Thermopower in 3D Interconnected Ni(x)Fe(1−x)/Cu Multilayered Nanowire Networks |
title_short | Giant Magnetoresistance and Magneto-Thermopower in 3D Interconnected Ni(x)Fe(1−x)/Cu Multilayered Nanowire Networks |
title_sort | giant magnetoresistance and magneto-thermopower in 3d interconnected ni(x)fe(1−x)/cu multilayered nanowire networks |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8146549/ https://www.ncbi.nlm.nih.gov/pubmed/33925733 http://dx.doi.org/10.3390/nano11051133 |
work_keys_str_mv | AT marchalnicolas giantmagnetoresistanceandmagnetothermopowerin3dinterconnectednixfe1xcumultilayerednanowirenetworks AT dacamarasantaclaragomestristan giantmagnetoresistanceandmagnetothermopowerin3dinterconnectednixfe1xcumultilayerednanowirenetworks AT abreuaraujoflavio giantmagnetoresistanceandmagnetothermopowerin3dinterconnectednixfe1xcumultilayerednanowirenetworks AT pirauxluc giantmagnetoresistanceandmagnetothermopowerin3dinterconnectednixfe1xcumultilayerednanowirenetworks |