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Recent Advances in Functional Magnetic Nanomaterials

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Materials Physics".

Deadline for manuscript submissions: closed (20 November 2023) | Viewed by 2399

Special Issue Editor

School of Optics and Electronic Information, Huazhong University of Science and Technology, Wuhan, China
Interests: ultrafast spin dynamics; neuromorphic computing; multiferrocity; magnetoresistance; magnetic/non-magnetic heterostructure

Special Issue Information

Dear Colleagues,

We are pleased to invite you to offer a paper for the Special Issue “Recent Advances in Functional Magnetic Nanomaterials”. Traditional magnetic materials have been successfully applied in numerous fields for more than a century, and their further progress is challenging. For future progress of magnetism, current attention needs to be paid to novel nanoscale magnetic materials that are promising for important advanced functional application in the future.

This Special Issue aims to collect papers concerning recent research advances in the field of magnetic nanomaterials that are widely belived to be potential important future applications. The paper subject relates to the scope of the journal Materials by focusing on the improvement of basic material performance that appears to be significant for future applications.

For this Special Issue, original research articles and reviews are welcome. Research areas may include (but are not limited to) the following:

  • Ultrathin non-magnet/magnet multilayer exploited in the field of memory, such as STT-MRAM or SOT-MRAM, novel neuromorphic computing such as probabilistic computing, the function of a synapse in an artificial neural network, etc.
  • Ultrafast spin dynamics in an antiferromagnetic (AFM) or ferromagnetic (FiM) medium, such as the relativistic motion of an AFM or FiM texture driven by SOT or voltage, the emission and manipulation of THz signals from an AFM or FiM medium driven by optical or electrical techniques.
  • Multifunctional magnetic sensors based on coupling magnetism and other physcial principles, such as magnetic field sensors triggered by a surface acoustic wave based on magnetoelastic coupling, quantum magnetic-field sensors, and so on.
  • The improvement of the performance of a magnetic sensor under an electrical field based on multiferroic behaviors, such as the adjustment of sensitivity, linearity, noise, and resolution by an external electric field.

I look forward to receiving your contributions.

Dr. Yue Zhang
Guest Editor

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. Materials is an international peer-reviewed open access semimonthly 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 2600 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

  • spintronics
  • heavy metal/ferromagnet multilayer
  • neuromorphic computing
  • antiferromagnetic/ferromagnetic spin dynamics
  • THz emission
  • surface acoustic wave
  • magnetoelastic coupling
  • multiferrocity

Published Papers (1 paper)

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Research

10 pages, 2137 KiB  
Article
Electric-Field Control of Spin Diffusion Length and Electric-Assisted D’yakonov–Perel’ Mechanism in Ultrathin Heavy Metal and Ferromagnetic Insulator Heterostructure
by Shijie Xu, Bingqian Dai, Houyi Cheng, Lixuan Tai, Lili Lang, Yadong Sun, Zhong Shi, Kang L. Wang and Weisheng Zhao
Materials 2022, 15(18), 6368; https://doi.org/10.3390/ma15186368 - 14 Sep 2022
Cited by 1 | Viewed by 1815
Abstract
Electric-field control of spin dynamics is significant for spintronic device applications. Thus far, effectively electric-field control of magnetic order, magnetic damping factor and spin–orbit torque (SOT) has been studied in magnetic materials, but the electric field control of spin relaxation still remains unexplored. [...] Read more.
Electric-field control of spin dynamics is significant for spintronic device applications. Thus far, effectively electric-field control of magnetic order, magnetic damping factor and spin–orbit torque (SOT) has been studied in magnetic materials, but the electric field control of spin relaxation still remains unexplored. Here, we use ionic liquid gating to control spin-related property in the ultra-thin (4 nm) heavy metal (HM) platinum (Pt) and ferromagnetic insulator (FMI) yttrium iron garnet (Y3Fe5O12, YIG) heterostructure. It is found that the anomalous Hall effect (AHE), spin relaxation time and spin diffusion length can be effectively controlled by the electric field. The anomalous Hall resistance is almost twice as large as at 0 voltage after applying a small voltage of 5.5 V. The spin relaxation time can vary by more than 50 percent with the electric field, from 41.6 to 64.5 fs. In addition, spin relaxation time at different gate voltage follows the reciprocal law of the electron momentum scattering time, which indicates that the D’yakonov–Perel’ mechanism is dominant in the Pt/YIG system. Furthermore, the spin diffusion length can be effectively controlled by an ionic gate, which can be well explained by voltage-modulated interfacial spin scattering. These results help us to improve the interface spin transport properties in magnetic materials, with great contributions to the exploration of new physical mechanisms and spintronics device. Full article
(This article belongs to the Special Issue Recent Advances in Functional Magnetic Nanomaterials)
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