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Magnetic, Electrical and Structural Phenomena in Multifunctional Metal Oxides – Novel Insights

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

Deadline for manuscript submissions: closed (20 February 2022) | Viewed by 2355

Special Issue Editors


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Guest Editor
Department of Physics, Faculty of Science, University of Zagreb, Bijenička c. 32, 10000 Zagreb, Croatia
Interests: magnetism; metal oxides; metal–organic compounds; multiferroics; molecular magnets; nanomagnets; metallic alloys and glasses; superconductors

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Guest Editor
Laboratory for Theoretical Investigations of Materials(L-TIM), Center of Excellence "CEXTREME LAB", Department of Materials Science (170), "Vinca" Institute of Nuclear Sciences, University of Belgrade, National Institute of the Republic of Serbia, 11000 Belgrade, Serbia
Interests: perovskites; chemical preparation; X-ray diffraction; magnetization; microstructure; metal oxides; multiferroics; nanomaterials

Special Issue Information

Dear Colleagues,

Metal oxides exhibit interesting phenomena in all areas of scientific research. In physics and chemistry, they are a fertile playground where plenty of fundamental phenomena can be tested, and they can also be developed for different applications. This era of metal oxides research began a long time ago, and will be of interest long in the future due to their interesting properties and applications in different areas, such as electronics, magnetic materials, optics and magneto-optics, energy production and storage, information and communication, medicine and biotechnology, sensors, catalysis, superconductors, extreme conditions materials, and many other life-influencing activities. In the development of multifunctional materials, there are many challenges, and this type of research is also very active in the current decade. Synthesis and production, their thorough structural characterization, and measurements and calculations of their magnetic and electric properties are crucial in order to gain understanding of their electromagnetic behavior. Therefore, it is worth paying attention to them in this Special Issue of Materials, with the aim of collecting such complementary results and achieving the advancement of their understanding. It is our pleasure to invite you to submit a manuscript, and your contributions in the form of full papers, communications, and reviews related to multifunctional materials, especially on their magnetic, electric and structural phenomena, are all welcome.

Prof. Dr. Damir Pajić
Dr. Maria Čebela
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. 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

  • magnetism and magnetic materials
  • ferroelectrics and dielectrics
  • structure, microstructure and nanostructure
  • metal oxides
  • multiferroics
  • multifunctional materials
  • nanostructured materials
  • chemical preparation
  • application of metal oxides
  • metal oxide semiconductors and superconductors

Published Papers (1 paper)

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Research

14 pages, 2338 KiB  
Article
Effect of Heat Treatment on Structural, Magnetic and Electrical Properties of La2FeMnO6
by Djoko Triyono, Y Yunida and Rifqi Almusawi Rafsanjani
Materials 2021, 14(24), 7501; https://0-doi-org.brum.beds.ac.uk/10.3390/ma14247501 - 07 Dec 2021
Cited by 3 | Viewed by 1957
Abstract
In this study, the effect of heat treatment on the structural, magnetic and electrical properties of La2FeMnO6 prepared via the sol–gel and sintering method were investigated. The heat-treatment conditions, i.e., the calcination temperature (1023 K and 1173 K), sintering temperature [...] Read more.
In this study, the effect of heat treatment on the structural, magnetic and electrical properties of La2FeMnO6 prepared via the sol–gel and sintering method were investigated. The heat-treatment conditions, i.e., the calcination temperature (1023 K and 1173 K), sintering temperature and time (1273 K for 1 and 3 h) were carried out. X-ray diffraction (XRD) revealed orthorhombic pnma (62) symmetry without any impurity phase for all samples. X-ray photoelectron spectroscopy confirmed the presence of Fe2+–Fe3+–Fe4+ and Mn3+–Mn4+ mixed states, and lanthanum and oxygen vacancies resulting in various magnetic exchange interactions. Furthermore, the magnetisation hysteresis showed enhanced hysteresis loops accompanied by an increase in magnetisation parameters with calcination temperature. The Raman phonon parameters induced a redshift in the phonon modes, alongside an increase in the intensity and compression of the linewidth, reflecting a decrease in lattice distortion, which was confirmed by XRD. The temperature-dependent conductivity showed that the conduction mechanism is dominated by p-type polaron hopping, and the lowest activation energy was approximately 0.237 ± 0.003 eV for the minimum heat-treatment conditions. These results show that varying heat-treatment conditions can significantly affect the structural, magnetic and electrical properties of the La2FeMnO6 system. Full article
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