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Magnetochemistry
Special Issues
Micromagnetics and Magnetization Processes in Nanomagnetism
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Micromagnetics and Magnetization Processes in Nanomagnetism

A special issue of Magnetochemistry (ISSN 2312-7481). This special issue belongs to the section "Magnetic Nanospecies".

Deadline for manuscript submissions: closed (30 December 2021) | Viewed by 5181

Special Issue Editors

Dr. Jose Maria Porro

E-Mail Website
Guest Editor
1. BCMaterials, Basque Center for Materials, Applications and Nanostructures, UPV/EHU Science Park, 48940 Leioa, Spain
2. IKERBASQUE, Basque Foundation for Science, Plaza Euskadi 5, 48009 Bilbao, Spain
Interests: nanomagnetism; advanced nanofabrication; micromagnetics; magnetization dynamics; neutron scattering techniques; synchrotron techniques
Dr. Eduardo Fernández

E-Mail Website
Guest Editor
BCMaterials, Basque Center for Materials, Applications and Nanostructures, UPV/EHU Science Park, 48940 Leioa, Spain
Interests: micro- and nanolithography; magnetic characterization; high-frequency measurements; magnetic sensors; finite elements magnetic simulations
Dr. Andoni Lasheras

E-Mail Website1 Website2
Guest Editor
Department of Physics, Faculty of Science and Technology, University of the Basque Country UPV/EHU, Barrio Sarriena s/n, 48940 Leioa, Spain
Interests: ferromagnetic materials fabrication; ferromagnetic materials characterization; magnetostrictive and magnetoelastic materials; magnetoelectric sensors
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

It is with great pleasure that we present this Special Issue “Micromagnetics and Magnetization Processes in Nanomagnetism”, allowing the nanomagnetism community the opportunity to contribute with the submission of review papers, full articles, and short communications.

Nanomagnetism comprises the study of the novel physical phenomena that appear when magnetic systems are reduced to the nanoscale. Current thin film growth technology allows fabricating thin films and multilayers at sub-nanoscale and all the way down to angstrom precision. In addition, the precise control in nanoscale fabrication offered by modern lithography now makes it possible to produce samples composed of high-quality nanostructures in magnetic films. This new control over the sizes, periods, and symmetry of nanostructures enables not only the fabrication of new systems of potential technological interest but also systems in which fundamental properties of mesoscopic matter can be investigated in depth.

This Special Issue focuses on different areas of nanomagnetism. Contributions to the collection may cover topics including but not limited to magnetization processes in magnetic nanostructures, magnetic thin films and multilayers, micromagnetic simulations, magnetization dynamics, and magnetization reversal processes, among others.

Dr. Jose Maria Porro
Dr. Eduardo Fernández
Dr. Andoni Lasheras
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Magnetochemistry is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2700 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • magnetic nanostructures
  • magnetic thin films and multilayers
  • micromagnetic simulations
  • magnetization dynamics
  • patterned magnetic thin films
  • magnetization reversal

Published Papers (2 papers)

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Research

9 pages, 1632 KiB  
Article
Competition of Magnetic Anisotropies in Permalloy Antidot Lattices
by Jose M. Porro, Aritz Villar, Carolina Redondo, Natalia A. Río-López, Andoni Lasheras, Daniel Salazar, Rafael Morales and Eduardo Fernández-Martín
Magnetochemistry 2022, 8(5), 55; https://doi.org/10.3390/magnetochemistry8050055 - 10 May 2022
Cited by 2 | Viewed by 2397
Abstract
Antidot lattices made of magnetic thin films are good candidates to be employed in future magnetic recording media. In this manuscript we present a study on the effect of shape and field-induced magnetic anisotropies on the magnetization reversal of 10 nm and 50 [...] Read more.
Antidot lattices made of magnetic thin films are good candidates to be employed in future magnetic recording media. In this manuscript we present a study on the effect of shape and field-induced magnetic anisotropies on the magnetization reversal of 10 nm and 50 nm thick permalloy antidot lattices. Rounded antidot square lattices were fabricated using a combination of electron beam evaporation and laser interference lithography, covering surfaces of a few cm2. We demonstrate that a magnetic anisotropy induced in the samples, as a consequence of an applied magnetic field during growth, competes with the shape anisotropy that dominates the response of the patterned thin films, and that the effect of the field-induced magnetic anisotropy scales with the thickness of the antidot thin films. Finally, we have quantified the anisotropy constant attributable to the uniaxial field-induced magnetic anisotropy in our antidot lattices. These findings are supported by micromagnetic simulations performed using MuMax3. Full article
(This article belongs to the Special Issue Micromagnetics and Magnetization Processes in Nanomagnetism)
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8 pages, 1970 KiB  
Article
Engineered Magnetization Dynamics of Magnonic Nanograting Filters
by Rawana Yagan, Ferhat Katmis and Mehmet C. Onbaşlı
Magnetochemistry 2021, 7(6), 81; https://doi.org/10.3390/magnetochemistry7060081 - 03 Jun 2021
Viewed by 1959
Abstract
Magnonic crystals and gratings could enable tunable spin-wave filters, logic, and frequency multiplier devices. Using micromagnetic models, we investigate the effect of nanowire damping, excitation frequency and geometry on the spin wave modes, spatial and temporal transmission profiles for a finite patterned nanograting [...] Read more.
Magnonic crystals and gratings could enable tunable spin-wave filters, logic, and frequency multiplier devices. Using micromagnetic models, we investigate the effect of nanowire damping, excitation frequency and geometry on the spin wave modes, spatial and temporal transmission profiles for a finite patterned nanograting under external direct current (DC) and radio frequency (RF) magnetic fields. Studying the effect of Gilbert damping constant on the temporal and spectral responses shows that low-damping leads to longer mode propagation lengths due to low-loss and high-frequency excitations are also transmitted with high intensity. When the nanowire is excited with stronger external RF fields, higher frequency spin wave modes are transmitted with higher intensities. Changing the nanowire grating width, pitch and its number of periods helps shift the transmitted frequencies over super high-frequency (SHF) range, spans S, C, X, Ku, and K bands (3–30 GHz). Our design could enable spin-wave frequency multipliers, selective filtering, excitation, and suppression in magnetic nanowires. Full article
(This article belongs to the Special Issue Micromagnetics and Magnetization Processes in Nanomagnetism)
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