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Crystals
Special Issues
Magnetіc Structure Compounds
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Magnetіc Structure Compounds

A special issue of Crystals (ISSN 2073-4352). This special issue belongs to the section "Inorganic Crystalline Materials".

Deadline for manuscript submissions: closed (25 December 2020) | Viewed by 10447

Special Issue Editors

Prof. Dr. Denis Vinnik

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Guest Editor
Laboratory of Single crystal growth, South Ural State University, 76, Lenin prospekt, 454080 Chelyabinsk, Russia
Interests: functional magnetic oxides; single crystals; ceramics; crystal structure
Special Issues, Collections and Topics in MDPI journals
Dr. Andrey Starikov

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Guest Editor
Material science and physics&chemistry of materials, South Ural State University (National Research University), 454080 Chelyabinsk, Russia

Special Issue Information

Dear Colleagues,

Magnetic structure compounds with a strong coupling of chemical composition, crystal/magnetic structure, and magnetic properties are very important today. A significant interest is due to deep fundamental and practical aspects. Chemical composition critically influences structural parameters and functional properties in magnetic structure compounds. New theoretical and experimental data lead to the emergence of new technologies that will make our world a better place. I kindly invite you to make a contribution to this Special Issue of Crystals titled as “Magnetic Structure Compounds”.

Prof. Dr. Denis Vinnik
Dr. Andrey Starikov 
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. Crystals 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 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

  • Crystal structure
  • Magnetic structure
  • Functional materials
  • Magnetic oxides
  • Microstructure
  • Physical properties

Published Papers (4 papers)

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Research

8 pages, 1225 KiB  
Communication
The Effect of a Weak Magnetic Field (0 T to 0.4 T) on the Valence Band and Intramolecular Hydrogen of Inorganic Aerosol Metal–Nitrogen Gas Chemical Reactions in a Sparking Discharge Process
by Stefan Ručman, Chatdanai Boonruang and Pisith Singjai
Crystals 2020, 10(12), 1141; https://0-doi-org.brum.beds.ac.uk/10.3390/cryst10121141 - 17 Dec 2020
Cited by 2 | Viewed by 2690
Abstract
The effects of a weak magnetic field on chemical reactions are still not well understood. In our research, we used a sparking discharge process to ionize and atomize different metal wires in ambient air under usual atmospheric conditions, with and without the presence [...] Read more.
The effects of a weak magnetic field on chemical reactions are still not well understood. In our research, we used a sparking discharge process to ionize and atomize different metal wires in ambient air under usual atmospheric conditions, with and without the presence of a magnetic field. Products were collected on a glass substrate and additionally characterized for the presence of nitrogen or nitride bonding with XPS. All samples sparked with no magnetic field provided an evidence of nitride formation. Additional characterization and comparison of samples prepared inside and outside a magnetic field was performed using FTIR and collected in deionized (DI) water to investigate the influence on conductivity and pH. When the magnetic field was present during sparking discharge, a higher concentration of nanoparticles was produced. Full article
(This article belongs to the Special Issue Magnetіc Structure Compounds)
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Graphical abstract

10 pages, 2732 KiB  
Article
Magnetic Diagram of the High-Pressure Stabilized Multiferroic Perovskites of the BiFe1-yScyO3 Series
by Elena L. Fertman, Alexey V. Fedorchenko, Erik Čižmár, Serhii Vorobiov, Alexander Feher, Yury V. Radyush, Anatoli V. Pushkarev, Nikolai M. Olekhnovich, Andrius Stanulis, Andrew R. Barron, Dmitry D. Khalyavin and Andrei N. Salak
Crystals 2020, 10(10), 950; https://0-doi-org.brum.beds.ac.uk/10.3390/cryst10100950 - 17 Oct 2020
Cited by 9 | Viewed by 2628
Abstract
Magnetic properties of the high-pressure stabilized perovskite BiFe1-yScyO3 phases (0.1 ≤ y ≤ 0.9) have been studied by means of magnetization measurements and neutron diffraction. The metastable perovskites of this series undergo irreversible polymorphic transformations upon annealing, [...] Read more.
Magnetic properties of the high-pressure stabilized perovskite BiFe1-yScyO3 phases (0.1 ≤ y ≤ 0.9) have been studied by means of magnetization measurements and neutron diffraction. The metastable perovskites of this series undergo irreversible polymorphic transformations upon annealing, the phenomenon referred to as conversion polymorphism. It has been found that the solid solutions with y ≥ 0.70 exhibit no long-range magnetic ordering regardless of their polymorph modification, while those with y ≤ 0.60 are all antiferromagnets. Depending on the scandium content, temperature and structural distortions, three types of the antiferromagnetic orderings, involving collinear, canted and cycloidal spin arrangements, have been revealed in the phases obtained via conversion polymorphism and the corresponding magnetic phase diagram has been suggested. Full article
(This article belongs to the Special Issue Magnetіc Structure Compounds)
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7 pages, 2283 KiB  
Article
Crystal Growth and Investigation of High-Pressure Physical Properties of Fe2As
by Guangyang Dai, Changling Zhang, Sijia Zhang, Xin He, Chongwen Ren, Jianfa Zhao, Xiaodong Li, Xiancheng Wang and Changqing Jin
Crystals 2020, 10(9), 790; https://0-doi-org.brum.beds.ac.uk/10.3390/cryst10090790 - 06 Sep 2020
Cited by 2 | Viewed by 2247
Abstract
We reported the growth of Fe2As single crystals and the study of its physical properties via comprehensive measurements, such as transport properties under pressure and high-pressure synchrotron radiation X-ray diffraction. Fe2As is an antiferromagnetic metal with TN ~ [...] Read more.
We reported the growth of Fe2As single crystals and the study of its physical properties via comprehensive measurements, such as transport properties under pressure and high-pressure synchrotron radiation X-ray diffraction. Fe2As is an antiferromagnetic metal with TN ~ 355 K. Within the pressure range of 100 GPa, no superconductivity was observed above 2 K. The abrupt drop in resistance from 21 to 31.7 GPa suggests a high-pressure phase transition happens. The high-pressure X-ray experiments indicate a new high-pressure phase appears, starting from 27.13 GPa. After the refinement of the high-pressure X-ray data, the pressure dependence of lattice constants of Fe2As (P4/nmm phase) was plotted and the bulk modulus B0 was obtained to be 168.6 GPa. Full article
(This article belongs to the Special Issue Magnetіc Structure Compounds)
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Graphical abstract

8 pages, 1682 KiB  
Article
Flux Single Crystal Growth of BaFe12−xTixO19 with Titanium Gradient
by Vladimir E. Zhivulin, Evgeny A. Trofimov, Olga V. Zaitseva, Dmitry A. Zherebtsov, Danil A. Uchaev and Denis A. Vinnik
Crystals 2020, 10(4), 264; https://0-doi-org.brum.beds.ac.uk/10.3390/cryst10040264 - 01 Apr 2020
Cited by 2 | Viewed by 2246
Abstract
Titanium substituted barium hexaferrite BaFe12−xTixO19 single crystal was grown by the top seeded solution growth method from flux on the seed with controlled cooling below 1175 °C. Titanium substitution level gradient in the single crystal in the vertical [...] Read more.
Titanium substituted barium hexaferrite BaFe12−xTixO19 single crystal was grown by the top seeded solution growth method from flux on the seed with controlled cooling below 1175 °C. Titanium substitution level gradient in the single crystal in the vertical and horizontal directions was studied. Two planes were cut and polished. A justification for the linear gradient of Ti substitution in a BaFe12−xTixO19 single crystal is proposed; substitution levels in the center and periphery were determined. It was shown that upon growth by the top seeded solution growth method, crystals with a linear Ti substitution level gradient from x = 0.73 to x = 0.77 for a distance of 11 mm along pulling direction were obtained. The study led to the conclusion about the relationship of the gradient and changes in the composition of the nutrient solution. Full article
(This article belongs to the Special Issue Magnetіc Structure Compounds)
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