Please use this identifier to cite or link to this item: http://hdl.handle.net/10995/118235
Title: Dzyaloshinskii Interaction and Exchange-Relativistic Effects in Orthoferrites
Authors: Moskvin, A. S.
Issue Date: 2021
Publisher: Pleiades journals
Citation: Moskvin A. S. Dzyaloshinskii Interaction and Exchange-Relativistic Effects in Orthoferrites / A. S. Moskvin // Journal of Experimental and Theoretical Physics. — 2021. — Vol. 132. — Iss. 4. — P. 517-547.
Abstract: Abstract: We present an overview of the microscopic theory of the Dzyaloshinskii–Moriya (DM) coupling and related exchange-relativistic effects such as exchange anisotropy, electron-nuclear antisymmetric supertransferred hyperfine interactions, antisymmetric magnetogyrotropic effects, and antisymmetric magnetoelectric coupling in strongly correlated 3d compounds focusing on orthoferrites RFeO3 (R is a rare-earth ion or yttrium Y). Most attention in the paper centers around the derivation of the Dzyaloshinskii vector, its value, orientation, and sense (sign) under different types of the (super)exchange interaction and crystal field. Microscopically derived expression for the dependence of the Dzyaloshinskii vector on the superexchange geometry allows one to find all the overt and hidden canting angles in orthoferrites RFeO3 as well as corresponding contribution to magnetic anisotropy. Being based on the theoretical predictions regarding the sign of the Dzyaloshinskii vector we have predicted and study in detail a novel magnetic phenomenon, weak ferrimagnetism in mixed weak ferromagnets with competing signs of the Dzyaloshinskii vectors. The ligand NMR measurements in weak ferromagnets are shown to be an effective tool to inspect the effects of DM coupling in an external magnetic field. Along with orthoferrites RFeO3 and weak ferrimagnets RFe1 –xCrxO3, although to a lesser extent, we address such typical weak ferromagnets as α-Fe2O3, FeBO3, and FeF3. © 2021, Pleiades Publishing, Inc.
Keywords: CRYSTAL ORIENTATION
FERRIMAGNETISM
FERROMAGNETIC MATERIALS
FERROMAGNETISM
HEMATITE
ION EXCHANGE
MAGNETIC ANISOTROPY
MAGNETS
METAL IONS
NUCLEAR MAGNETIC RESONANCE
RARE EARTH COMPOUNDS
RARE EARTHS
RELATIVITY
VECTORS
YTTRIUM METALLOGRAPHY
EXCHANGE ANISOTROPY
EXTERNAL MAGNETIC FIELD
MAGNETIC PHENOMENA
MAGNETOELECTRIC COUPLINGS
MICROSCOPIC THEORY
RELATIVISTIC EFFECTS
SUPERTRANSFERRED HYPERFINE
WEAK FERROMAGNETS
MAGNETIC FIELD EFFECTS
URI: http://hdl.handle.net/10995/118235
Access: info:eu-repo/semantics/openAccess
SCOPUS ID: 85107066247
ISSN: 10637761
DOI: 10.1134/S1063776121040245
metadata.dc.description.sponsorship: Ministry of Education and Science of the Russian Federation, Minobrnauka: FEUZ-2020-0054
I am grateful to I.E. Dzyaloshinskii for supporting my work and stimulating discussions. I consider it my duty to note that most of the work was done in close collaboration with A.M. Kadomtseva and her laboratory staff. I thank E.V. Sinitsyn and I.G. Bostrem for very fruitful multi-year collaboration, S.V. Maleev, A.K. Zvezdin, B.Z. Malkin, M.V. Eremin, A.A. Mukhin, B.S. Tsukerblatt, S.‑L. Drechsler, R.E. Walstedt, and V.E. Dmitrienko for stimulating and encouraging discussions.
This research was funded by Act 211 Government of the Russian Federation, agreement no. 02.A03.21.0006 and by the Ministry of Education and Science, project no. FEUZ-2020-0054.
Appears in Collections:Научные публикации, проиндексированные в SCOPUS и WoS CC

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