Dipole skyrmion vortices in multiferroic BiFeO3

Kalinkin, A. N.; Polyakov, A. E.; Скориков, В. М.

doi:10.1134/s0020168513030060

Cited by 5 publications

(2 citation statements)

References 29 publications

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“…This suggests that one can manipulate skyrmions with an electric field without destroying them. Note that the possibility of forming spin and dipole vortex-type skyrmion lattices in BiFeO 3 has also been discussed, with respectively taking into account the effects of DMI and the electrostatic dipole-dipole interaction [507,508]. Nevertheless, such skyrmion states in BiFeO 3 have not yet been experimentally observed.…”

Section: Vortices In Other Multiferroicsmentioning

confidence: 99%

Characteristics and controllability of vortices in ferromagnetics, ferroelectrics, and multiferroics

Zheng

Chen

2017

Rep. Prog. Phys.

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Topological defects in condensed matter are attracting e significant attention due to their important role in phase transition and their fascinating characteristics. Among the various types of matter, ferroics which possess a switchable physical characteristic and form domain structure are ideal systems to form topological defects. In particular, a special class of topological defects-vortices-have been found to commonly exist in ferroics. They often manifest themselves as singular regions where domains merge in large systems, or stabilize as novel order states instead of forming domain structures in small enough systems. Understanding the characteristics and controllability of vortices in ferroics can provide us with deeper insight into the phase transition of condensed matter and also exciting opportunities in designing novel functional devices such as nano-memories, sensors, and transducers based on topological defects. In this review, we summarize the recent experimental and theoretical progress in ferroic vortices, with emphasis on those spin/dipole vortices formed in nanoscale ferromagnetics and ferroelectrics, and those structural domain vortices formed in multiferroic hexagonal manganites. We begin with an overview of this field. The fundamental concepts of ferroic vortices, followed by the theoretical simulation and experimental methods to explore ferroic vortices, are then introduced. The various characteristics of vortices (e.g. formation mechanisms, static/dynamic features, and electronic properties) and their controllability (e.g. by size, geometry, external thermal, electrical, magnetic, or mechanical fields) in ferromagnetics, ferroelectrics, and multiferroics are discussed in detail in individual sections. Finally, we conclude this review with an outlook on this rapidly developing field.

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Section: Vortices In Other Multiferroicsmentioning

confidence: 99%

Characteristics and controllability of vortices in ferromagnetics, ferroelectrics, and multiferroics

Zheng

Chen

2017

Rep. Prog. Phys.

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“…A skyr mion model was first used by Dawker et al [73] to describe ferroelectric cylindrical nanodomains in lead germanate, Pb 5 Ge 3 O 11 . Later, using the finite differ ence method Kalinkin et al [74] solved a nonlinear integrodifferential equation describing the dynamics of a dipole vortex (skyrmion) in a ferroelectric nano disk and demonstrated a stabilizing effect of nonlocal dipole-dipole interaction. In this context, it is worth noting a study by Hajra et al [75], who synthesized BiFeO 3 nanodisks 0.6 nm in thickness and 4.5 nm in diameter and measured their polarization.…”

Section: Memory Based On Ferroelectric Tunneling Transimentioning

confidence: 99%