dc.contributor.author | Aubert, Alex | |
dc.contributor.author | Madugundo, Rajasekhar | |
dc.contributor.author | Saiz Garitaonandia, José Javier | |
dc.contributor.author | Barandiarán García, José Manuel | |
dc.contributor.author | Hadjipanayis, George C. | |
dc.date.accessioned | 2024-02-08T11:07:51Z | |
dc.date.available | 2024-02-08T11:07:51Z | |
dc.date.issued | 2020-06-03 | |
dc.identifier.citation | Acta Materialia 195 : 519-526 (2020) | es_ES |
dc.identifier.issn | 1359-6454 | |
dc.identifier.issn | 1873-2453 | |
dc.identifier.uri | http://hdl.handle.net/10810/65434 | |
dc.description | Figuras descargables en pdf en la página de la editorial | es_ES |
dc.description.abstract | The influence of quenching rate and nitrogenation in melt-spun Nd1.2Fe10.6Mo1.4 has been investigated in
terms of microstructure, phase formation and magnetic properties. Increasing the quenching rate leads
to smaller grain size. However, it also implies a change in the crystallized phase structure. We obtained
a pure ThMn12 (1:12) structure at quenching rates up to 30 m/s, leading to an average grain size of
220 nm. Magnetic measurements of the as-spun ribbons revealed a reduction of the saturation magneti zation for samples quenched above 30 m/s. This is attributed to the formation of a paramagnetic phase
and/or magnetic phase with a Curie temperature (TC) close to room temperature which is confirmed by 57Fe Mössbauer spectroscopy. The analysis of the spectra rules out the presence of a ferromagnetic TbCu7
(1:7) phase, which is usually reported in such system. The ribbons were nitrogenated in order to form
the harder magnetic phase Nd1.2Fe10.6Mo1.4Nx. The ribbon quenched at 30 m/s with the pure ThMn12 ni tride structure is the optimum sample for getting hard magnetic properties, with a coercivity of 0.6 T,
saturation magnetization of 1.15 T and Curie temperature of 350 °C. Finally, we show the good stability
of the later phase structure at elevated temperatures (≤ TC), making this compound a good candidate for
permanent magnet applications. | es_ES |
dc.description.sponsorship | This work has received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement No 686056 (NOVAMAG). | es_ES |
dc.language.iso | eng | es_ES |
dc.publisher | Elsevier | es_ES |
dc.relation | info:eu-repo/grantAgreement/EC/H2020/686056 | |
dc.rights | info:eu-repo/semantics/openAccess | es_ES |
dc.subject | ThMn12 structure | es_ES |
dc.subject | nitrides | |
dc.subject | hard magnets | |
dc.subject | melt spinning | |
dc.subject | paramagnetism | |
dc.title | Structural and magnetic properties of Nd-Fe-Mo-(N) melt-spun ribbons with ThMn12 structure | es_ES |
dc.type | info:eu-repo/semantics/preprint | es_ES |
dc.rights.holder | © 2020 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved. | * |
dc.relation.publisherversion | https://www.sciencedirect.com/science/article/pii/S135964542030392X | es_ES |
dc.identifier.doi | /10.1016/j.actamat.2020.05.045 | |
dc.contributor.funder | European Commission | |
dc.departamentoes | Física | es_ES |
dc.departamentoeu | Fisika | es_ES |