Please use this identifier to cite or link to this item: http://hdl.handle.net/10995/101937
Title: Spin-Order-Induced Ferroelectricity and Magnetoelectric Effect in LiCuFe2 (VO4)3
Authors: Koshelev, A. V.
Zakharov, K. V.
Pyatakov, A. P.
Shvanskaya, L. V.
Shakin, A. A.
Volkova, O. S.
Chareev, D. A.
Kamusella, S.
Klauss, H. -H.
Molla, K.
Rahaman, B.
Saha-Dasgupta, T.
Vasiliev, A. N.
Issue Date: 2018
Publisher: American Physical Society
Citation: Spin-Order-Induced Ferroelectricity and Magnetoelectric Effect in LiCuFe2 (VO4)3 / A. V. Koshelev, K. V. Zakharov, A. P. Pyatakov, et al. — DOI 10.1103/PhysRevApplied.10.034008 // Physical Review Applied. — 2018. — Vol. 10. — Iss. 3. — 034008.
Abstract: The mixed spin chain compound, LiCuFe2(VO4)3, reaches a magnetically ordered state in two steps at TN2=9.8K and TN1=8.2K detected in magnetic-susceptibility χ and specific-heat Cp measurements. Dielectric permittivity ϵ evidences these transitions by a sharp peak at TN2 and a steplike anomaly at TN1, both easily suppressed by an external magnetic field. These features in permittivity are preceded by a frequency-dependent relaxation-type anomaly at T- insensitive to the magnetic field. Mössbauer spectroscopy reveals a wide distribution of a hyperfine field between TN2 and TN1 while the first-principles calculations provide values of magnetic-exchange-interaction parameters. For Cu, the orbital moment aligned in the same direction as the spin moment is substantial. This large orbital moment is important in driving the polarization through an inverse Dzyaloshinksii-Moriya interaction in a situation where the spatial symmetry gets broken in the magnetic structure. The data obtained suggest the spin-order-induced ferroelectricity is inherent for improper multiferroics. © 2018 American Physical Society.
Keywords: CALCULATIONS
FERROELECTRICITY
IRON ALLOYS
LITHIUM ALLOYS
MAGNETIC FIELDS
MAGNETIC SUSCEPTIBILITY
PERMITTIVITY
SPECIFIC HEAT
DIELECTRIC PERMITTIVITIES
EXTERNAL MAGNETIC FIELD
FIRST-PRINCIPLES CALCULATION
FREQUENCY DEPENDENT
MAGNETIC EXCHANGE INTERACTIONS
MAGNETICALLY ORDERED STATE
MIXED-SPIN CHAIN
SSBAUER SPECTROSCOPIES
COPPER ALLOYS
URI: http://hdl.handle.net/10995/101937
Access: info:eu-repo/semantics/openAccess
SCOPUS ID: 85053281711
PURE ID: 7906221
fe7bc964-4978-4033-8f75-27b6f8413b49
ISSN: 23317019
DOI: 10.1103/PhysRevApplied.10.034008
Appears in Collections:Научные публикации, проиндексированные в SCOPUS и WoS CC

Files in This Item:
File Description SizeFormat 
2-s2.0-85053281711.pdf1,05 MBAdobe PDFView/Open


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.