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Magnetochemistry
Special Issues
State-of-the-Art Research in Magnetism in France
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State-of-the-Art Research in Magnetism in France

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

Deadline for manuscript submissions: closed (20 December 2023) | Viewed by 6339

Special Issue Editors

Prof. Dr. David S. Schmool

E-Mail Website
Guest Editor
UFR of Sciences Department of Physical Sciences, University Versailles St-Quentin-en-Yvelines, 78035 Versailles, France
Interests: nanotechnologies; nanomagnetism; magnetic nanoparticles and nanostructures; magnetic thin films and multilayers; magnetization dynamics
Special Issues, Collections and Topics in MDPI journals
Dr. Riccardo Hertel

E-Mail Website
Guest Editor
CNRS and Université de Strasbourg, Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), UMR 7504 Strasbourg, France
Interests: micromagnetism;topological structures in ferroic materials;three-dimensional magnetic nanostructures; fast magnetization dynamics; theory and simulation; numerical methods and code development; finite element method

Special Issue Information

Dear Colleagues,

Currently, the editors of Magnetochemistry are preparing a Special Issue on the magnetism community in France. With the French magnetics community being among the most diversified and developed in the world, this Special Issue provides an opportunity to publicize the strength and range of magnetics research in France. This collection of articles is open to all aspects of magnetics research conducted in France, experimental and theoretical, with topics ranging from fundamental aspects to materials and applications. The scope of the Special Issue will cover, e.g., magnetic thin films and multilayers, magnetic nanoparticles, metals and oxides, spintronics, nanomagnetism, magnonics, and magnetization dynamics, etc.

We invite you to submit an original research manuscript/review, which highlights your research for this Special Issue.

Prof. Dr. David S. Schmool
Dr. Riccardo Hertel
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 2200 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 thin films and multilayers
  • magnetic nanoparticles
  • metals and oxides
  • spintronics
  • nanomagnetism
  • magnonics
  • magnetization dynamics

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Further information on MDPI's Special Issue polices can be found here.

Published Papers (3 papers)

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Research

8 pages, 1311 KiB  
Article
Chiral Excitation of Exchange Spin Waves Using Gold Nanowire Grating
by Loic Temdie, Vincent Castel, Timmy Reimann, Morris Lindner, Carsten Dubs, Gyandeep Pradhan, Jose Solano, Romain Bernard, Hicham Majjad, Yves Henry, Matthieu Bailleul and Vincent Vlaminck
Magnetochemistry 2023, 9(8), 199; https://doi.org/10.3390/magnetochemistry9080199 - 3 Aug 2023
Cited by 1 | Viewed by 1475
Abstract
We propose an experimental method for the unidirectional excitation of spin waves. By structuring Au nanowire arrays within a coplanar waveguide onto a thin yttrium iron garnet (YIG) film, we observe a chiral coupling between the excitation field geometry of the nanowire grating [...] Read more.
We propose an experimental method for the unidirectional excitation of spin waves. By structuring Au nanowire arrays within a coplanar waveguide onto a thin yttrium iron garnet (YIG) film, we observe a chiral coupling between the excitation field geometry of the nanowire grating and several well-resolved propagating magnon modes. We report a propagating spin wave spectroscopy study with unprecedented spectral definition, wavelengths down to 130 nm and attenuation lengths well above 100 μm over the 20 GHz frequency band. The proposed experiment paves the way for future non-reciprocal magnonic devices. Full article
(This article belongs to the Special Issue State-of-the-Art Research in Magnetism in France)
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11 pages, 6366 KiB  
Article
Femtosecond Laser Ablation-Induced Magnetic Phase Transformations in FeRh Thin Films
by Pavel Varlamov, Anna Semisalova, Anh Dung Nguyen, Michael Farle, Yannis Laplace, Michele Raynaud, Olivier Noel, Paolo Vavassori and Vasily Temnov
Magnetochemistry 2023, 9(7), 186; https://doi.org/10.3390/magnetochemistry9070186 - 18 Jul 2023
Cited by 1 | Viewed by 1965
Abstract
In this study, we present a novel investigation into the magnetic and morphological properties of equiatomic B2-ordered FeRh thin films irradiated with single high-intensity ultrashort laser pulses. The goal is to elucidate the effect of femtosecond laser ablation on the magnetic properties of [...] Read more.
In this study, we present a novel investigation into the magnetic and morphological properties of equiatomic B2-ordered FeRh thin films irradiated with single high-intensity ultrashort laser pulses. The goal is to elucidate the effect of femtosecond laser ablation on the magnetic properties of FeRh. We employed Scanning Magneto-Optical Kerr Effect (S-MOKE) microscopy to examine the magnetic phase after laser processing, providing high spatial resolution and sensitivity. Our results for the first time demonstrated the appearance of a magneto-optical signal from the bottom of ablation craters, suggesting a transition from antiferromagnetic to ferromagnetic behavior. Fluence-resolved measurements clearly demonstrate that the ablation threshold coincides with the threshold of the antiferromagnet-to-ferromagnet phase transition. The existence of such a magnetic phase transition was independently confirmed by temperature-dependent S-MOKE measurements using a CW laser as a localized heat source. Whereas the initial FeRh film displayed a reversible antiferromagnet-ferromagnet phase transition, the laser-ablated structures exhibited irreversible changes in their magnetic properties. This comprehensive analysis revealed the strong correlation between the femtosecond laser ablation process and the magnetic phase transformation in FeRh thin films. Full article
(This article belongs to the Special Issue State-of-the-Art Research in Magnetism in France)
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13 pages, 2569 KiB  
Article
Towards Resonantly Enhanced Acoustic Phonon-Exchange Magnon Interactions at THz Frequencies
by Tudor-Gabriel Mocioi, Antonia Ghita and Vasily V. Temnov
Magnetochemistry 2023, 9(7), 184; https://doi.org/10.3390/magnetochemistry9070184 - 17 Jul 2023
Cited by 4 | Viewed by 1878
Abstract
Using valid experimental parameters, we quantify the magnitude of resonantly phonon-driven precession of exchange magnons in freestanding ferromagnetic nickel thin films on their thickness L. Analytical solutions of acoustically driven equations for magnon oscillators display a nonmonotonous dependence of the peak magnetization [...] Read more.
Using valid experimental parameters, we quantify the magnitude of resonantly phonon-driven precession of exchange magnons in freestanding ferromagnetic nickel thin films on their thickness L. Analytical solutions of acoustically driven equations for magnon oscillators display a nonmonotonous dependence of the peak magnetization precession on the film thickness. It is explained by different L-dependence of multiple prefactors entering in the expression for the total magnetization dynamics. Depending on the ratio of acoustic and magnetic (Gilbert) damping constants, the magnetization precession is shown to be amplified by a Q-factor of either the phonon or the magnon resonance. The increase in the phonon mode amplitude for thinner membranes is also found to be significant. Focusing on the magnetization dynamics excited by the two first acoustic eigenmodes with p=1 and p=2, we predict the optimum thicknesses of nickel membranes to achieve large amplitude magnetization precession at multi 100 GHz frequencies at reasonably low values of an external magnetic field. By extending the study to the case of Ni-Si bilayers, we show that these resonances are achievable at even higher frequencies, approaching the THz range. Full article
(This article belongs to the Special Issue State-of-the-Art Research in Magnetism in France)
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