Special Issue "Magnetic Multiferroics"

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

Deadline for manuscript submissions: closed (31 December 2021).

Special Issue Editor

Dr. Dmitry Karpinsky
Guest Editor
SSPA “Scientific-Practical Materials Research Centre of NAS of Belarus”, Minsk, Belarus
Interests: multiferroic materials; magnetoelectric coupling; dielectric, magnetic, and transport properties, piezoelectricity and polarization phenomena; preparative chemistry of solids
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The ferroelectricity, (anti)ferromagnetism, and ferroelasticity of multiferroics—materials which exhibit more than one ferroic ordering—are fascinating objects for fundamental and experimental studies as well as technological applications due to complex coupling between ferroic properties. The recently discovered possibility to affect their structural state and functional properties via external stimuli and synthesis conditions opens up new perspectives in the area of technological applications. Latest developments in basic science, preparation methods, and measuring techniques provide effective tools to create novel technological materials with desired and controlled functionality.

This issue of Magnetochemistry aims to summarize recent advances in single phase and composite multiferroics focusing on their structure–property relations with special attention to magnetic properties. Contributions include but are not limited to the following topics: synthesis, processing, theoretical, and experimental methods to study the structure and functional properties of multiferroics, domain wall phenomena, magnetoelectric coupling, magnetization and polarization switching, and applications of magnetic multiferroics.

You may choose our Joint Special Issue in Applied Sciences.

Dr. Dmitry Karpinsky
Guest Editor

Manuscript Submission Information

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  • multiferroics
  • magnetoelectric materials
  • (anti)ferromagnets
  • magnetoelectric coupling
  • functional properties
  • crystal structure
  • phase transitions

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Published Papers (1 paper)

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Origin of Perovskite Multiferroicity and Magnetoelectric-Multiferroic Effects—The Role of Electronic Spin in Spontaneous Polarization of Crystals
Magnetochemistry 2022, 8(1), 9; https://doi.org/10.3390/magnetochemistry8010009 - 11 Jan 2022
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In this semi-review paper, we show that the multiferroic properties of perovskite ABO3 crystals with B(dn), n > 0, centers are fully controlled by the influence of the electronic spin on the local dipolar instability that triggers the spontaneous [...] Read more.
In this semi-review paper, we show that the multiferroic properties of perovskite ABO3 crystals with B(dn), n > 0, centers are fully controlled by the influence of the electronic spin on the local dipolar instability that triggers the spontaneous polarization of the crystal. Contrary to the widespread statements, the multiferroicity of these crystals does not emerge due to the addition of unpaired electrons (carrying magnetic moments) to the spontaneously polarizing crystal; the spin states themselves are an important part of the local electronic structure that determines the very possibility of the spontaneous polarization. This conclusion emerges from vibronic theory, in which the ferroelectricity is due to the cooperative interaction of the local dipolar distortions induced by the pseudo-Jahn-Teller effect (PJTE). The latter requires sufficiently strong vibronic coupling between ground and excited electronic states with opposite parity but the same spin multiplicity. The detailed electronic structure of the octahedral [B(dn)O6] center in the molecular orbital presentation shows how this requirement plays into the dependence of the possible perovskite magnetic, ferroelectric, and multiferroic properties on the number of d electrons, provided the criterion of the PJTE is obeyed. Revealed in detail, the role of the electronic spin in all these properties and their combination opens novel possibilities for their manipulation by means of external perturbations and exploration. In particular, it is shown that by employing the well-known spin-crossover phenomenon, a series of novel effects become possible, including magnetic-ferroelectric (multiferroic) crossover with electric-multiferroic, magnetic-ferroelectric, and magneto-electric effects, some of which have already been observed experimentally. Full article
(This article belongs to the Special Issue Magnetic Multiferroics)
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