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Petrakovskii, G. A.
Spin-wave spectrum and thermodynamic properties of antiferromagnet with diamagnetic dilution and fluctuating exchange interactions / G. A. Petrakovskii, E. V. Kuzmin, S. S. Aplesnin // Fiz. Tverd. Tela. - 1984. - Vol. 26, Is. 3. - P. 765-772. - Cited References: 17 . - ISSN 0367-3294

РУБ Physics, Condensed Matter

WOS
Доп.точки доступа:
Kuzmin, E. V.; Кузьмин, Евгений Всеволодович; Aplesnin, S. S.; Аплеснин, Сергей Степанович; Петраковский, Герман Антонович
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Aplesnin, S. S.
Dimerization of antiferromagnetic chain with 4-spin interaction / S. S. Aplesnin // Fiz. Tverd. Tela. - 1996. - Vol. 38, Is. 6. - P. 1868-1877. - Cited References: 30 . - ISSN 0367-3294

РУБ Physics, Condensed Matter
Рубрики:
SPIN-1/2 HEISENBERG-ANTIFERROMAGNET
   COMPETING INTERACTIONS
   MONTE-CARLO
   THERMODYNAMIC PROPERTIES
   SYSTEMS
   CUGEO3
   TEMPERATURE
   NEUTRON
   STATE
   MODEL

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APLESNIN, S. S.
MAGNETIC-PROPERTIES OF A UNIAXIAL ANISOTROPIC ANTIFERROMAGNET WITH TRIANGULAR LATTICE / S. S. APLESNIN // Fiz. Tverd. Tela. - 1989. - Vol. 31, Is. 10. - P. 83-91. - Cited References: 12 . - ISSN 0367-3294

РУБ Physics, Condensed Matter

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New intermediate phase in the spiral antiferromagnet cscucl3 induced by a strong magnetic-field / N. V. Fedoseeva, R. S. Gekht, T. A. Velikanova, A. D. Balaev // JETP Letters. - 1985. - Vol. 41, Is. 8. - P. 406-410. - Cited References: 5 . - ISSN 0021-3640

РУБ Physics, Multidisciplinary

WOS
Доп.точки доступа:
Fedoseeva, N. V.; Gekht, R. S.; Velikanova, T. A.; Balaev, A. D.; Балаев, Александр Дмитриевич
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Rudenko, V. V.
Magnetic anisotropy of a manganese carbonate antiferromagnet / V. V. Rudenko // Russ. Phys. J. - 2009. - Vol. 52, Is. 9. - P. 990-991. - Cited References: 9 . - ISSN 1064-8887

РУБ Physics, Multidisciplinary
Рубрики:
S-IONS
Кл.слова (ненормированные):
magnetic anisotropy -- crystalline field -- electron paramagnetic resonance

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Держатели документа:
LV Kirenskii Inst Phys, Krasnoyarsk 660036, Russia
ИФ СО РАН

Доп.точки доступа:
Руденко, Валерий Васильевич
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Bifurcations of coupled electron-phonon modes in an antiferromagnet subjected to a magnetic field / K. N. Boldyrev [et al.] // Phys. Rev. Lett. - 2017. - Vol. 118, Is. 16. - Ст. 167203, DOI 10.1103/PhysRevLett.118.167203. - Cited References: 26. - This research was supported by the Russian Scientific Foundation under Grant No. 14-12-01033, the President of Russian Federation (MK-3577.2017.2, K. N. B.), and the U.S. Department of Energy under Grant No. DE-FG02-07ER46382 (experiments at U4-IR beam line NSLS-BNL, T. N. S. and A. A. S.). The National Synchrotron Light Source is operated as a user facility for the U.S. Department of Energy under Contract No. DE-AC02-98CH10886. Part of this work was supported by EMFL (Contract No. 26211). M. N. P. thanks B. Z. Malkin and A. V. Popov for helpful discussions. . - ISSN 0031-9007
Кл.слова (ненормированные):
Antiferromagnetic materials -- Bifurcation (mathematics) -- Electron-phonon interactions -- Electrons -- Magnetic fields -- Magnetism -- Temperature -- Antiferromagnetic crystals -- Bifurcation points -- Electron phonon couplings -- Electronic excitation -- External magnetic field -- Field independents -- Low temperatures -- Reflection spectra -- Phonons
Аннотация: We report on a new effect caused by the electron-phonon coupling in a stoichiometric rare-earth antiferromagnetic crystal subjected to an external magnetic field, namely, the appearance of a nonzero gap in the spectrum of electronic excitations in an arbitrarily small field. The effect was registered in the low-temperature far-infrared (terahertz) reflection spectra of an easy-axis antiferromagnet PrFe3(BO3)4 in magnetic fields Bext-c. Both paramagnetic and magnetically ordered phases (including a spin-flop one) were studied in magnetic fields up to 30 T, and two bifurcation points were observed. We show that the field behavior of the coupled modes can be successfully explained and modeled on the basis of the equation derived in the framework of the theory of coupled electron-phonon modes, with the same field-independent electron-phonon interaction constant |W|=14.8 cm-1. © 2017 American Physical Society.

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Держатели документа:
Institute of Spectroscopy, Russian Academy of Sciences, Troitsk, Moscow, Russian Federation
Department of Physics, New Jersey Institute of Technology, Newark, NJ, United States
High Field Magnet Laboratory (HFML-EMFL), Radboud University, Nijmegen, Netherlands
Kirenskiy Institute of Physics, Siberian Branch of RAS, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Boldyrev, K. N.; Stanislavchuk, T. N.; Sirenko, A. A.; Kamenskyi, D.; Bezmaternykh, L. N.; Безматерных, Леонард Николаевич; Popova, M. N.
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Magnetic ground state of the Ising-like antiferromagnet DyScO3 / L. S. Wu [et al.] // Phys. Rev. B. - 2017. - Vol. 96, Is. 14. - Ст. 144407, DOI 10.1103/PhysRevB.96.144407. - Cited References:37. - We thank J. M. Sheng and Q. Zhang for the help with the neutron data refinement. We would like to thank A. Christianson, I. Zaliznyak, M. Mourigal, Z. T. Wang, and C. Batista for useful discussions. The research at the Spallation Neutron Source (ORNL) is supported by the Scientific User Facilities Division, Office of Basic Energy Sciences, U.S. Department of Energy (DOE). Research supported in part by the Laboratory Directed Research and Development Program of Oak Ridge National Laboratory, managed by UT-Battelle, LLC, for the U.S. Department of Energy. This work was partly supported by the U.S. Department of Energy (DOE), Office of Science, Basic Energy Sciences (BES), Materials Science and Engineering Division. . - ISSN 2469-9950. - ISSN 2469-9969

РУБ Physics, Condensed Matter
Рубрики:
THIN-FILMS
   FERROELECTRICITY
   VISUALIZATION
   EXCITATIONS
Аннотация: We report on the low-temperature magnetic properties of the DyScO3 perovskite, which were characterized by means of single crystal and powder neutron scattering, and by magnetization measurements. Below TN = 3.15 K, Dy3+ moments form an antiferromagnetic structure with an easy axis of magnetization lying in the ab plane. The magnetic moments are inclined at an angle of ∼ +/- 28 degrees to the b axis. We show that the ground-state Kramers doublet of Dy3+ is made up of primarily |+/- 15/2 ⟩ eigenvectors and well separated by a crystal field from the first excited state at E1 = 24.9 meV. This leads to an extreme Ising single-ion anisotropy, M⊥/M∥∼ 0.05. The transverse magnetic fluctuations, which are proportional to M⊥2/M∥2, are suppressed, and only moment fluctuations along the local Ising direction are allowed. We also found that the Dy-Dy dipolar interactions along the crystallographic c axis are two to four times larger than in-plane interactions.

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Держатели документа:
Oak Ridge Natl Lab, Quantum Condensed Matter Div, Oak Ridge, TN 37831 USA.
Max Planck Inst Chem Phys Solids, Nothnitzer Str 40, D-01187 Dresden, Germany.
Tech Univ Dresden, Inst Festkorper & Mat Phys, D-01069 Dresden, Germany.
Oak Ridge Natl Lab, Chem & Engn Mat Div, Oak Ridge, TN 37831 USA.
Fed Res Ctr SB RAS, Kirensky Inst Phys, Krasnoyarsk 660036, Russia.
Oak Ridge Natl Lab, Neutron Data Anal & Visualizat Div, Oak Ridge, TN 37831 USA.
Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN 37831 USA.
Oak Ridge Natl Lab, Chem Sci Div, Oak Ridge, TN 37831 USA.
Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37831 USA.

Доп.точки доступа:
Wu, L. S.; Nikitin, S. E.; Frontzek, M.; Kolesnikov, A. I.; Ehlers, G.; Lumsden, M. D.; Shaykhutdinov, K. A.; Шайхутдинов, Кирилл Александрович; Guo, E. -J.; Savici, A. T.; Gai, Z.; Sefat, A. S.; Podlesnyak, A.; Scientific User Facilities Division, Office of Basic Energy Sciences, U.S. Department of Energy (DOE); Laboratory Directed Research and Development Program of Oak Ridge National Laboratory; U.S. Department of Energy (DOE), Office of Science, Basic Energy Sciences (BES), Materials Science and Engineering Division
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Transversal Zeeman effect in NdFe3(BO3)4 antiferromagnet / S. L. Gnatchenko [et al.] // VI Euro-Asian Symposium "Trends in MAGnetism" (EASTMAG-2016) : abstracts / ed.: O. A. Maksimova, R. D. Ivantsov. - Krasnoyarsk : KIP RAS SB, 2016. - Ст. P6.13. - P. 321. - References: 1 . - ISBN 978-5-904603-06-9
Кл.слова (ненормированные):
Kramers doublet -- splitting -- effective field

Доп.точки доступа:
Gnatchenko, S. L.; Гнатченко С. Л.; Kashur, I. S.; Кашур И. С.; Kurnosov, V. S.; Курносов В. С.; Piryatinskaya, V. G.; Пирятинская В. Г.; Malakhovskii, A. V.; Малаховский, Александр Валентинович; Gudim, I. A.; Гудим, Ирина Анатольевна; Euro-Asian Symposium "Trends in MAGnetism"(6 ; 2016 ; Aug. ; 15-19 ; Krasnoyarsk); "Trends in MAGnetism", Euro-Asian Symposium(6 ; 2016 ; Aug. ; 15-19 ; Krasnoyarsk); Институт физики им. Л.В. Киренского Сибирского отделения РАН

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Lattice and magnetic dynamics of a quasi-one-dimensional chain antiferromagnet PbFeBO4 / M. A. Prosnikov [et al.] // J. Phys.: Condens. Matter. - 2017. - Vol. 29, Is. 2. - Ст. 025808, DOI 10.1088/0953-8984/29/2/025808. - Cited References:32. - This research was supported by the Russian Science Foundation, grant No. 16-12-10456. . - ISSN 0953-8984. - ISSN 1361-648X

РУБ Physics, Condensed Matter
Рубрики:
LIGHT-SCATTERING
DIELECTRIC-PROPERTIES
RAMAN-SPECTROSCOPY
Кл.слова (ненормированные):
Raman scattering -- spin and phonon excitations -- spin-phonon interaction -- antiferromagnetism -- magnetic symmetry analysis -- two-magnon scattering
Аннотация: A group of recently synthesized orthorhombic Pnma crystals PbMBO4 (M = Cr, Mn, Fe) demonstrates a number of unusual structural and magnetic properties. We report on polarized Raman scattering study of the lattice and magnetic dynamics in single crystals of an antiferromagnet PbFeBO4 below and above T-N = 114 K. Polarization properties of the observed magnetic excitations below T-N as well as intense quasi-elastic scattering support the quasi-one-dimensional character of the magnetic structure of PbFeBO4. Frequency overlapping of magnetic excitations and low-frequency phonons in the range of 90-200 cm-1 leads to pronounced asymmetric anomalies thus confirming intrinsic coupling of magnetic and lattice subsystems. This conclusion is also supported by observation of anomalous temperature behaviour of higher frequency phonons in the vicinity of T-N. Experimental investigations are supported by relevant magnetic symmetry analysis which allows us to explain previously observed anomalous results.

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Держатели документа:
Russian Acad Sci, Ioffe Phys Tech Inst, St Petersburg 194021, Russia.
SB Russian Acad Sci, LV Kirensky Inst Phys, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Prosnikov, M. A.; Smirnov, A. N.; Davydov, V. Yu; Sablina, K. A.; Саблина, Клара Александровна; Pisarev, R. V.; Russian Science Foundation [16-12-10456]
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10.

Magnetoelastic coupling in the triangular lattice antiferromagnet CuCrS2 / JCE Rasch [et al.] // Phys. Rev. B. - 2009. - Vol. 80, Is. 10. - Ст. 104431, DOI 10.1103/PhysRevB.80.104431. - Cited References: 30. - We are grateful for support and allocated beam time at the Institut Laue-Langevin (D1A, IN3),Grenoble, France, the spallation neutron source SINQ (TriCS, DMC) and the SLS-MS beamline, both Paul Scherrer Insitut, Villigen, Switzerland. This work was supported by INTAS Grant No. 06-1000013-9002 of the Russian Academy of Science (RAS), Siberian Branch. . - ISSN 1098-0121

РУБ Physics, Condensed Matter
Рубрики:
NEUTRON POWDER DIFFRACTION
   MAGNETIC-STRUCTURE
   STRUCTURAL-PROPERTIES
   PHASE-TRANSITION
   SOLID OXYGEN
   ALPHA-PHASES
   BETA-PHASES
   SELENIDES
   SULFIDES
Аннотация: CuCrS2 is a triangular lattice Heisenberg antiferromagnet with a rhombohedral crystal structure. We report on neutron and synchrotron powder diffraction results which reveal a monoclinic lattice distortion at the magnetic transition and verify a magnetoelastic coupling. CuCrS2 is therefore an interesting material to study the influence of magnetism on the relief of geometrical frustration.

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Держатели документа:
[Rasch, Julia C. E.
Boehm, Martin
Ritter, Clemens
Mutka, Hannu] Inst Max Von Laue Paul Langevin, F-38042 Grenoble 9, France
[Rasch, Julia C. E.
Schefer, Juerg
Keller, Lukas] ETH, Neutron Scattering Lab, CH-5232 Villigen, Switzerland
[Cervellino, Antonio] Paul Scherrer Inst, Swiss Light Source, CH-5232 Villigen, Switzerland
[Abramova, Galina M.] SB RAS, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
[Loeffler, Joerg F.] ETH, Dept Mat, Lab Met Phys & Technol, CH-8093 Zurich, Switzerland
ИФ СО РАН
Institut Laue-Langevin, 6 Rue Jules Horowitz, 38042 Grenoble Cedex 9, France
Laboratory for Neutron Scattering, ETH Zurich, Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland
L.V. Kirensky Institute of Physics, SB, RAS, Krasnoyarsk 660036, Russian Federation
Swiss Light Source, Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland
Laboratory of Metal Physics and Technology, Department of Materials, ETH Zurich, 8093 Zurich, Switzerland

Доп.точки доступа:
Rasch, JCE; Boehm, M.; Ritter, C.; Mutka, H.; Schefer, J.; Keller, L.; Abramova, G. M.; Абрамова, Галина Михайловна; Cervellino, A.; Loffler, J. F.; Russian Academy of Science (RAS), Siberian Branch [06-1000013-9002]
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