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Magnetochemistry
Special Issues
New Trends in Two-Dimensional Magnetic Materials
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New Trends in Two-Dimensional Magnetic Materials

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

Deadline for manuscript submissions: closed (15 April 2023) | Viewed by 1879

Special Issue Editors

Prof. Dr. Lin Zhu

E-Mail Website
Guest Editor
School of Physics and Wuhan National High Magnetic Field Center, Huazhong University of Science and Technology, Wuhan 430074, China
Interests: spintronics; spin caloritronics; two-dimensional material; density functional theory; first-principle; thermoelectric transport; photo-electric response; heterostructure; spin transport; half-metal property; spin filter effect; gaint magnetoresistance effect; spin seebeck effect; negative differential resistance
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Kailun Yao

E-Mail Website
Guest Editor
School of Physics and Wuhan National High Magnetic Field Center, Huazhong University of Science and Technology, Wuhan 430074, China
Interests: quantum magnetic systems; molecular electronics; spintronics; condensed matter physics under strong magnetic fields

Special Issue Information

Dear Colleagues,

Due to its excellent physical properties and unique non-dangling atomic level planar structure, two-dimensional materials are expected to be a strong competitor for silicon-based semiconductor materials. At the same time, the demand for smart systems consisting of low-power smart computing chips and sensitive sensors is destined to explode as people yearn for a smart life. In the past few years, two-dimensional materials have rapidly developed as an emerging material and are gradually applied in the industrialization. Meanwhile, the family members of two-dimensional materials have been increasing, and their application fields have become more diverse, including high-density storage, optical sensing, thermoelectric cycles, new energy batteries, and auxiliary medicine. Therefore, the research on the properties of new low-dimensional materials has become a hot topic in recent years.

In this Special Issue of Magnetochemistry, we call for highlights of the recent achievements and research reports in the fields of spintronic devices, synthesis, and characterization of quantum materials (e.g., graphene, semiconducting magnetic materials, two-dimensional material) and their heterostructures, molecular devices, spintronics, spin caloritronics, and quantum and neuromorphic computing. The published papers include research papers, communications, and perspectives/progress report review articles.

Prof. Dr. Lin Zhu
Prof. Dr. Kailun Yao
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

  • spintronics
  • magnetic semiconductors
  • magnetoresistance
  • two-dimensional material
  • density functional theory
  • spin orbit coupling
  • magnetic heterostructures
  • half-metal property
  • spin filter effect
  • photoelectric response
  • spin Seebeck effect
  • negative differential resistance

Published Papers (1 paper)

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Research

18 pages, 6523 KiB  
Article
Influence of Na/Mg Co-Doping in Tuning Microstructure, Transport, Optical, and Magnetic Properties of TiO2 Compounds for Spintronics Applications
by Radha Narzary, Bikash Dey, Santanu Sen, Bichitra Nanda Parida, Arunendu Mondal, Seenipandian Ravi and Sandeep Kumar Srivastava
Magnetochemistry 2022, 8(11), 150; https://doi.org/10.3390/magnetochemistry8110150 - 7 Nov 2022
Cited by 9 | Viewed by 1511
Abstract
In recent years, researchers have been making a persistent effort to discover innovative and appropriate oxide materials that can be exploited in optoelectronics devices. The primary objective of this research is to study the effect of Na/Mg co-doping on microstructure, transport (dielectric and [...] Read more.
In recent years, researchers have been making a persistent effort to discover innovative and appropriate oxide materials that can be exploited in optoelectronics devices. The primary objective of this research is to study the effect of Na/Mg co-doping on microstructure, transport (dielectric and Hall Effect), optical and magnetic properties of Ti0.94-yNa0.06MgyO2 (y = 0–0.08) compounds that were synthesized using a solid-state route method. All the compounds have been crystallized to a single rutile phase, as reported by the XRD study. The elemental color mapping reveals that there is a consistent distribution of all of the elements across the compound. The XPS study suggests that Ti mostly resided in the Ti4+ oxidation state. The enhancement of the Mg co-doping concentration led to a decrease in the dielectric value as well as the AC conductivity of the material. In addition to this, it has been noted that these compounds have a low dielectric loss. The analyses of Nyquist plots reveal that the increase of Mg co-doping concentration led to a rise in the amount of relaxation that is non-Debye sort. This, in turn, caused a reduction in the amount of resistance exhibited by grains and grain boundaries. The Maxwell–Wagner model was used to conduct an analysis of the dielectric data, and the results indicated that the hopping of charge carriers is most likely to be responsible for the transport of electrical charges. From the optical properties’ measurement and analyses, it was noticed that the band gap had been slightly changed, but the transmittance value had increased from 81% for Ti0.94Na0.06O2 to 84% with an increase in Mg co-doping concentration. The Hall Effect analysis unequivocally pointed to the presence of p-type conductivity as well as an increased carrier density concentration. The room temperature magnetization versus field measurement indicates the ferromagnetic nature of the samples. Thus, the co-doping of Mg with Na in TiO2 leads to a narrowing of the band gap of TiO2 while tweaking the optical and transport properties. The studied materials can be utilized for spintronics and optoelectronics applications. Full article
(This article belongs to the Special Issue New Trends in Two-Dimensional Magnetic Materials)
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