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1.
Magnetic ordering of
NdFe3(BO3)(4) studied by infrared absorption spectroscopy / E. P. Chukalina [et al.]> // Phys. Lett. A. - 2004. -
Vol. 322
,
Is. 3-4
. - P. 239-243,
DOI
10.1016/j.physleta.2003.12.062. - Cited References: 8 . - ISSN 0375-9601
РУБ
Physics, Multidisciplinary
Рубрики:
CRYSTALS
Кл.слова (ненормированные):
ferroborates
--
Fourier-transform spectroscopy
--
magnetic ordering
--
Ferroborates
--
Fourier-transform spectroscopy
--
Magnetic ordering
--
iron
--
neodymium
--
absorption spectroscopy
--
article
--
electronics
--
infrared spectroscopy
--
magnetism
--
molecular interaction
--
molecular physics
--
temperature
Аннотация:
We report the first measurements of the optical spectra of NdFe3(BO3)(4), a promising material for optoelectronics. Exchange splitting of Nd3+ spectral lines due to magnetic interactions in a magnetically ordered state was observed. The temperature dependences of the exchange splitting and of the linewidth point to the temperature T-c 33 +/- 1K of the magnetic ordering in both iron and neodymium. magnetic subsystems. 2004 Elsevier B.V. All rights reserved.
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Держатели документа:
Russian Acad Sci, Inst Spect, Troitsk 142190, Moscow Region, Russia
RAS, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia
ИФ СО РАН
Institute of Spectroscopy, Russian Academy of Sciences, 142190 Troitsk, Moscow Region, Russian Federation
L.V. Kirensky Institute of Physics, Siberian Branch of RAS, Krasnoyarsk 660036, Russian Federation
Доп.точки доступа:
Chukalina, E. P.; Kuritsin, D. Y.; Popova, M. N.; Bezmaternykh, L. N.; Безматерных, Леонард Николаевич; Kharlamova, S. A.; Temerov, V. L.; Темеров, Владислав Леонидович
}
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2.
Optical properties and
electronic structure of rare-earth
ferroborates
/ V. N. Zabluda [et al.]> // Phys. Solid State. - 2005. -
Vol. 47
,
Is. 3
. - P. 489-494,
DOI
10.1134/1.1884710. - Cited References: 19. - This work was supported by the Russian Foundation for Basic Research (project no. 03-02-16268) and the program of the Department of Physical Sciences of the Russian Academy of Sciences "Strongly Correlated Electrons" . - ISSN 1063-7834
РУБ
Physics, Condensed Matter
Рубрики:
TRIGONAL GDFE3(BO3)(4)
MAGNETIC-PROPERTIES
BAND-STRUCTURE
FEBO3
ABSORPTION
Аннотация:
The optical absorption spectra of single-crystal ferroborate GdFe3(BO3)(4) and GdFe2.1Ga0.9(BO3)(4) are measured and interpreted. It is found that the absorption edge and the absorption bands A, B, and C observed below the edge are close to those for FeBO3. A many-electron model of the band structure of GdFe3(BO3)(4) is suggested including strong electron correlations between the iron d states. It is shown that GdFe3(BO3)(4) has a charge-transfer dielectric gap. A rise in pressure is predicted to result in a crossover between the high-spin and low-spin states of the Fe ion, collapse of the magnetic moment, a weakening of Coulomb correlations, an abrupt reduction in the energy gap, and an insulator-semiconductor transition. (c) 2005 Pleiades Publishing, Inc.
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Публикация на русском языке
Оптические свойства и электронная структура редкоземельных ферроборатов [Текст] / В. Н. Заблуда [и др.] // Физ. тверд. тела. - 2005. - Т. 47 Вып. 3. - С. 474-479
Держатели документа:
Russian Acad Sci, LV Kirensky Phys Inst, Siberian Div, Krasnoyarsk 660036, Russia
ИФ СО РАН
Kirensky Institute of Physics, Siberian Division, Russian Academy of Sciences, Krasnoyarsk, Akademgorodok, 660036, Russian Federation
Доп.точки доступа:
Zabluda, V. N.; Заблуда, Владимир Николаевич; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Potseluliko, A. M.; Kharlamova, S. A.
}
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3.
Ovchinnikov, S. G.
The mechanism of the electronic transition in
ferroborates
under high pressure / S. G. Ovchinnikov> // J. Phys.: Condens. Matter. - 2005. -
Vol. 17
: 2nd International Symposium on Physics of Solids Under High Pressure Using Nuclear Probes (JUL 20-24, 2004, Cologne, GERMANY),
Is. 11
. - P. S743-S751,
DOI
10.1088/0953-8984/17/11/003. - Cited References: 20 . - ISSN 0953-8984
РУБ
Physics, Condensed Matter
Рубрики:
STRUCTURAL PHASE-TRANSITION
MAGNETIC COLLAPSE
OPTICAL-SPECTRA
BAND-STRUCTURE
FEBO3
MODEL
Кл.слова (ненормированные):
Carrier concentration
--
Correlation methods
--
Electron transitions
--
High pressure effects
--
Magnetic moments
--
Mathematical models
--
Metal insulator transition
--
Crystal field
--
Electron correlations
--
Electronic transition
--
Ferroborates
--
Ferromagnetic materials
Аннотация:
A novel mechanism for the insulator-semiconductor transition and magnetic collapse in FeBO3 is proposed in the framework of the multielectron model with account taken of strong electron correlations. The electronic transition results from the crossover of the high spin and low spin Fe3+ states induced by the crystal field increasing with pressure. In the high pressure phase a semiconductor-metal transition is expected.
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Держатели документа:
Russian Acad Sci, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia
ИФ СО РАН
L V Kirensky Institute of Physics, Siberian Br. Russ. Acad. of Sci., Krasnoyarsk, 660036, Russian Federation
Доп.точки доступа:
Овчинников, Сергей Геннадьевич
}
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4.
Studies of magnetic
and optic properties of rare-earth gallo-
ferroborates
by Mossbauer and optical spectroscopy / O. A. Bayukov [et al.]> // Physica B. - 2005. -
Vol. 359
: International Conference on Strongly Correlated Electron Systems (SCES 04) (JUL 26-30, 2004, Karlsruhe, GERMANY). - P. 1321-1323,
DOI
10.1016/j.physb.2005.01.397. - Cited References: 3 . - ISSN 0921-4526
РУБ
Physics, Condensed Matter
Кл.слова (ненормированные):
strongly correlated electron system
--
antiferromagnets
--
borates
--
Antiferromagnets
--
Borates
--
Strongly correlated electron system
--
Antiferromagnetism
--
Cryostats
--
Energy gap
--
Magnetic moments
--
Magnetic properties
--
Mossbauer spectroscopy
--
Optical properties
--
Single crystals
--
Borates
--
Coulomb correlations
--
Liquid helium
--
Strongly correlated electron systems
--
Gadolinium compounds
Аннотация:
Magnetic and optical properties of GdFe3-xGax(BO3)(4) single crystals are investigated by Mossbauer and optical spectroscopy. The GdFe3(BO3)(4) multielectron band structure model is derived. A high- and low-spin crossover of Fe3+ ion, a collapse of the magnetic moment, the suppression of Coulomb correlations, and insulator-semiconductor transition are predicted. The jump of an energy gap is measured at pressure 43 GPa. (c) 2005 Elsevier B.V. All rights reserved.
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Держатели документа:
Russian Acad Sci, Siberian Branch, LV Kirensky Phys Inst, Krasnoyarsk, Russia
Inst High Pressure Phys, Troitsk 142190, Russia
Inst Crystallog, Moscow 117333, Russia
Univ Liverpool, Liverpool L69 3BX, Merseyside, England
ИФ СО РАН
LV Kirensky Institute of Physics, Siberian Branch of RAS, Krasnoyarsk, Russian Federation
Institute of High Pressure Physics, 142190, Troisk, Moscow region, Russian Federation
Institute of Crystallograhy, Leninsky Av. 59, 117333, Moscow, Russian Federation
The University of Liverpool, Liverpool L69 3BX, United Kingdom
Доп.точки доступа:
Bayukov, O. A.; Баюков, Олег Артемьевич; Gavrilyuk, A. M.; Zabluda, V. N.; Заблуда, Владимир Николаевич; Lyubutin, I. S.; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Potseluyko, A. M.; Tomas, M.; Trojan, I. A.; Kharlamova, S. A.
}
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5.
Magnetoelectric interactions in
rare-earth
ferroborates
/ A. M. Kadomtseva [et al.]> // J. Exp. Theor. Phys. - 2007. -
Vol. 105
,
Is. 1
. - P. 116-119,
DOI
10.1134/S1063776107070254. - Cited References: 14 . - ISSN 1063-7761
РУБ
Physics, Multidisciplinary
Рубрики:
GDFE3(BO3)(4)
Кл.слова (ненормированные):
Gadolinium compounds
--
Magnetoelectric effects
--
Phase transitions
--
Polarization
--
Single crystals
--
Magnetic control
--
Magnetoelectric interactions
--
Rare earth
ferroborates
--
Torque curves
--
Rare earths
Аннотация:
Magnetic-field-induced phase transitions in single crystals of the rare-earth
ferroborates
GdFe3(BO3)(4) and NdFe3(BO3)(4) have been studied by measuring magnetoelectric dependences and torque curves. These phase transitions can serve as one of the possible mechanisms for magnetic control of electric polarization. Magnetic phase transitions in GdFe3(BO3)(4) are analyzed theoretically.
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Держатели документа:
Moscow MV Lomonosov State Univ, Moscow 119992, Russia
Russian Acad Sci, Inst Gen Phys, Moscow 119991, Russia
Russian Acad Sci, Siberian Div, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
ИФ СО РАН
Moscow State University, Moscow 119992, Russian Federation
Institute of General Physics, Russian Academy of Sciences, ul. Vavilova 38, Moscow 119991, Russian Federation
Kirensky Institute of Physics, Siberian Division, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk 660036, Russian Federation
Доп.точки доступа:
Kadomtseva, A. M.; Zvezdin, A. K.; Pyatakov, A. P.; Kuvardin, A. V.; Vorob'ev, G. P.; Popov, Y. F.; Bezmaternykh, L. N.; Безматерных, Леонард Николаевич
}
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6.
Observation of spontaneous
spin reorientation in Nd1-x Dy (x) Fe-3(BO3)(4)
ferroborates
with a competitive R-Fe exchange / Y. F. Popov [et al.]> // JETP Letters. - 2009. -
Vol. 89
,
Is. 7
. - P. 345-351,
DOI
10.1134/S002136400907008X. - Cited References: 14. - We are deeply grateful to A. K. Zvezdin and A. P. Pyatakov for useful advice and to E. A. Popova for placing the DyFeINF3/INF(BOINF3 /INF)INF4INF single crystal at our disposal. This work was supported by the Russian Foundation for Basic Research ( project no. 07-02-00580-a). . - ISSN 0021-3640
РУБ
Physics, Multidisciplinary
Рубрики:
TRIGONAL GDFE3(BO3)(4)
MAGNETIC-PROPERTIES
DYFE3(BO3)(4)
Аннотация:
The magnetic, magnetoelectric, and magnetoelastic properties of DyFe3(BO3)(4) single crystals and the Nd0.75Dy0.25Fe3(BO3)(4) substituted compound with the competitive Nd-Fe and Dy-Fe exchange interactions have been investigated in magnetic fields up to 210 kOe. It has been shown that the antiferromagnetic state in Nd0.75Dy0.25Fe3(BO3)(4) below the N,el temperature is easy-plane and a spontaneous spin-reorientation transition to a uniaxial state occurs near 25 K. Anomalies are observed in various physical characteristics in a spin-flop transition induced by the magnetic field along the trigonal axis. The H-T phase diagrams are constructed; they are in good agreement with a simple model taking into account the anisotropy of the exchange splitting and g factors of the ground doublets of the Dy3+ and Nd3+ ions. The features of the magnetoelectric effect in various magnetic phases have been studied. Spontaneous electric polarization has been revealed in the region of the existence of an easy-plane antiferromagnetic state in the substituted compound. A qualitative theoretical justification of the possibility of the appearance of the spontaneous spin-reorientation transition in the Nd0.75Dy0.25Fe3(BO3)(4) substituted compound is given.
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Держатели документа:
[Popov, Yu. F.
Kadomtseva, A. M.
Vorob'ev, G. P.] Moscow MV Lomonosov State Univ, Moscow 119992, Russia
[Mukhin, A. A.
Ivanov, V. Yu.
Kuz'menko, A. M.
Prokhorov, A. S.] Russian Acad Sci, Prokhorov Gen Phys Inst, Moscow 119991, Russia
[Bezmaternykh, L. N.
Temerov, V. L.] Russian Acad Sci, Siberian Branch, LV Kirensky Phys Inst, Krasnoyarsk 660038, Russia
ИФ СО РАН
Moscow State University, Moscow 119992, Russian Federation
Prokhorov General Physics Institute, Russian Academy of Sciences, ul. Vavilova 38, Moscow 119991, Russian Federation
Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk 660038, Russian Federation
Доп.точки доступа:
Popov, Y. F.; Kadomtseva, A. M.; Vorob'ev, G. P.; Mukhin, A. A.; Ivanov, V. Y.; Kuz'menko, A. M.; Prokhorov, A. S.; Bezmaternykh, L. N.; Безматерных, Леонард Николаевич; Temerov, V. L.; Темеров, Владислав Леонидович; Russian Foundation for Basic Research [07-02-00580-a]
}
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7.
Magnetic Structure of
the Field?Induced Polarization Phases of Rare Earth
Ferroborates
/ Christie Nelson, Mo Haiding [et al.]> //
18th International Conference on Magnetism (ICM-2009). - 2009. - Ст. Mo-A-5.1-03
Доп.точки доступа:
Nelson, Christie; Haiding, Mo; Bezmaternykh, L.N.; Gudim, I.A.; International Conference on Magnetism(18 ; 2009 ; July 26-31 ; Karlsruhe, Germany)
}
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8.
Magnetic anisotropy and
magnetoelectric properties of Tb1-x Er (x) Fe-3(BO3)(4)
ferroborates
/ A. K. Zvezdin [et al.]> // J. Exp. Theor. Phys. - 2009. -
Vol. 109
,
Is. 1
. - P. 68-73,
DOI
10.1134/S1063776109070097. - Cited References: 18. - This study was supported by the Russian Foundation for Basic Research (project no. 07-02-00580). . - ISSN 1063-7761
РУБ
Physics, Multidisciplinary
Рубрики:
GDFE3(BO3)(4)
Кл.слова (ненормированные):
Competing exchange
--
Complex compositions
--
Critical fields
--
Electric polarization
--
Er concentrations
--
Exchange splitting
--
Ferroborates
--
G factors
--
Magnetoelectric properties
--
Nonmonotonic
--
Simple model
--
Spin-flop transitions
--
Composite micromechanics
--
Erbium
--
Ions
--
Magnetic anisotropy
--
Magnetostriction
--
Magnetostrictive devices
--
Phase transitions
--
Polarization
--
Spin dynamics
--
Terbium alloys
--
Single crystals
Аннотация:
Magnetic and magnetoelectric properties of ferroborate single crystals with complex composition (Tb1 - x Er (x) Fe-3(BO3)(4), x = 0, 0.75) and with competing exchange Tb-Fe and Er-Fe interactions are investigated. Jumps in electric polarization, magnetostriction, and magnetization are observed as a result of spin-flop transitions, as well as a considerable decrease in the critical field upon an increase in the Er concentration, in a field H (c) parallel to the c axis. The observed behavior of phase-transition fields is analyzed and explained using a simple model taking into account anisotropy in g factors and exchange splitting of funda-mental doublets of the easy-axis Tb3+ ion and easy-plane Er3+ ion. It is established that magnetoelectric and magnetostriction anomalies under spin-flop transitions are mainly controlled by the Tb subsystem. The Tb subsystem makes a nonmonotonic contribution Delta P (a) (H (a) , T) to polarization along the a axis: the value of Delta P (a) reverses its sign and increases with temperature due to the contribution from the excited states of the Tb3+ ion.
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Держатели документа:
[Zvezdin, A. K.
Pyatakov, A. P.
Ivanov, V. Yu.
Kuz'menko, A. M.
Mukhin, A. A.] Russian Acad Sci, Prokhorov Inst Gen Phys, Moscow 119991, Russia
[Kadomtseva, A. M.
Popov, Yu. F.
Vorob'ev, G. P.
Pyatakov, A. P.] Moscow MV Lomonosov State Univ, Moscow 119992, Russia
[Bezmaternykh, L. N.
Gudim, I. A.] Russian Acad Sci, Siberian Div, LV Kirensky Phys Inst, Krasnoyarsk 660038, Russia
ИФ СО РАН
Moscow State University, Moscow 119992, Russian Federation
Prokhorov Institute of General Physics, Russian Academy of Sciences, Moscow 119991, Russian Federation
Kirenskii Institute of Physics, Siberian Division, Russian Academy of Sciences, Krasnoyarsk 660038, Russian Federation
Доп.точки доступа:
Zvezdin, A. K.; Kadomtseva, A. M.; Popov, Y. F.; Vorob'ev, G. P.; Pyatakov, A. P.; Ivanov, V. Y.; Kuz'menko, A. M.; Mukhin, A. A.; Bezmaternykh, L. N.; Безматерных, Леонард Николаевич; Gudim, I. A.; Гудим, Ирина Анатольевна; Russian Foundation for Basic Research [07-02-00580]
}
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9.
Magnetoelectric and magnetoelastic
properties of rare-earth
ferroborates
/ A. M. Kadomtseva [et al.]> // Low Temp. Phys. - 2010. -
Vol. 36
,
Is. 6
. - P. 511-521 ; Физика низких температур,
DOI
10.1063/1.3457390. - Cited References: 37. - This work was performed with financial support from RFFI (grant No. 10-02-00848-a). . - ISSN 1063-777X
РУБ
Physics, Applied
Аннотация:
The magnetic, electric, magnetoelectric, and magnetoelastic properties of rare-earth
ferroborates
RFe(3)(BO(3))(4) (R=Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er) as well as yttrium ferroborate YFe(3)(BO(3))(4) have been studied comprehensively. A strong dependence not only of the magnetic but also magnetoelectric properties on the type of rare-earth ion, specifically, on its anisotropy, which determines the magnetic structure and the large contribution to the electric polarization, has been found. This is manifested in the strong temperature dependence of the polarization below the Neel point T(N) and its specific field dependence, which is determined by the competition between the external and exchange f-d fields. A close correlation has been found between the magnetoelastic properties of
ferroborates
and the magnetoelastic and magnetic anomalies at magnetic-field induced phase transitions. It is found that in easy-plane
ferroborates
, together with magnetic-field induced electric polarization spontaneous polarization also arises below the Neel point. The ferroelectric ordering in
ferroborates
is of extrinsic character, giving rise to strong magnetoelectric coupling below T(N). Aside from the antiferromagnetic phase transition, the particulars of the structural phase transition accompanied by anomalies of the dielectric and magnetoelectric properties are examined for the first time. The character of the dielectric anomalies at a structural transition is analyzed for the first time on the basis of Landau's approach. (c) 2010 American Institute of Physics. [doi:10.1063/1.3457390]
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Держатели документа:
[Kadomtseva, A. M.
Popov, Yu. F.
Vorob'ev, G. P.
Pyatakov, A. P.
Krotov, S. S.
Kamilov, K. I.] Moscow MV Lomonosov State Univ, Moscow 119991, Russia
[Ivanov, V. Yu.
Mukhin, A. A.
Zvezdin, A. K.
Kuz'menko, A. M.] Russian Acad Sci, AM Prokhorov Inst Phys, Moscow 119991, Russia
[Bezmaternykh, L. N.
Gudim, I. A.
Temerov, V. L.] Russian Acad Sci, LV Kirenskii Inst Phys, Siberian Branch, Krasnoyarsk 660036, Russia
ИФ СО РАН
M. V. Lomonosov Moscow State University, Vorob'evy gory, Moscow 119991, Russian Federation
A. M. Prokhorov Institute of Physics of the Russian Academy of Sciences, Moscow 119991, Russian Federation
L. V. Kirenskii Inst. of Physics, Siberian Branch of the Russian Academy of Sciences, Krasnoyarsk 660036, Russian Federation
Доп.точки доступа:
Kadomtseva, A. M.; Popov, Y. F.; Vorob'ev, G. P.; Pyatakov, A. P.; Krotov, S. S.; Kamilov, K. I.; Ivanov, V. Y.; Mukhin, A. A.; Zvezdin, A. K.; Kuz'menko, A. M.; Bezmaternykh, L. N.; Безматерных, Леонард Николаевич; Gudim, I. A.; Гудим, Ирина Анатольевна; Temerov, V. L.; Темеров, Владислав Леонидович
}
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10.
Antiferromagnetic Resonance and
Dielectric Properties of Rare-earth
Ferroborates
in the Submillimeter Frequency Range / A. M. Kuz'menko [et al.]> // J. Exp. Theor. Phys. - 2011. -
Vol. 113
,
Is. 1
. - P. 113-120,
DOI
10.1134/S106377611105013X. - Cited References: 27. - This work was supported by the Russian Foundation for Basic Research, project no. 10-02-00846. . - ISSN 1063-7761
РУБ
Physics, Multidisciplinary
Рубрики:
GDFE3(BO3)(4)
SPECTROSCOPY
CRYSTAL
Кл.слова (ненормированные):
Antiferromagnetic resonance
--
Basic parameters
--
Effective anisotropy constant
--
Ferroborates
--
Ferroics
--
Ferromagnetic orderings
--
Frequency ranges
--
Magnetic interactions
--
Magnetoresonance
--
Millimeter frequency range
--
Rare earth ions
--
Submillimeters
--
Antiferromagnetic materials
--
Crystallography
--
Erbium
--
Europium
--
Ferromagnetic resonance
--
Ion exchange
--
Magnetic anisotropy
--
Magnetic devices
--
Magnetic structure
--
Permittivity
--
Resonance
--
Antiferromagnetism
Аннотация:
The magnetoresonance and dielectric properties of a number of crystals of a new family of multiferroics, namely, rare-earth
ferroborates
RFe(3)(BO(3))(4) (R = Y, Eu, Pr, Tb, Tb(0.25)Er(0.75)), are studied in the submillimeter frequency range (nu = 3-20 cm(-1)).
Ferroborates
with R = Y, Tb, and Eu exhibit permittivity jumps at temperatures of 375, 198, and 58 K, respectively, which are caused by the R32 -> P3(1)2(1) phase transition. Antiferromagnetic resonance (AFMR) modes in the subsystem of Fe(3+) ions are detected in the range of antiferromagnetic ordering (T < T(N) = 30-40 K) in all ferroborates that have either an easy-plane (Y, Eu) or easy-axis (Pr, Tb, Tb(0.25)Er(0.75)) magnetic structure. The AFMR frequencies are found to depend strongly on the magnetic anisotropy of a rare-earth ion and its exchange interaction with the Fe subsystem, which determine the type of magnetic structure and the sign and magnitude of an effective anisotropy constant. The basic parameters of the magnetic interactions in these ferroborates are found, and the magnetoelectric contribution to AFMR is analyzed.
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Держатели документа:
[Kuz'menko, A. M.
Mukhin, A. A.
Ivanov, V. Yu.
Lebedev, S. P.] Russian Acad Sci, Inst Gen Phys, Moscow 119991, Russia
[Kadomtseva, A. M.] Moscow MV Lomonosov State Univ, Moscow 119991, Russia
[Bezmaternykh, L. N.] Russian Acad Sci, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia
ИФ СО РАН
Institute of General Physics, Russian Academy of Sciences, ul. Vavilova 38, Moscow, 119991, Russian Federation
Moscow State University, Moscow, 119991, Russian Federation
Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036, Russian Federation
Доп.точки доступа:
Kuz'menko, A. M.; Mukhin, A. A.; Ivanov, V. Y.; Kadomtseva, A. M.; Lebedev, S. P.; Bezmaternykh, L. N.; Безматерных, Леонард Николаевич
}
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11.
Antiferromagnetic Resonance and
Dielectric Properties of Rare-earth
Ferroborates
in the Submillimeter Frequency Range / A. M. Kuz'menko, A. A. Mukhin, V. Yu. Ivanov [et al.]> // J. Exp. Theor. Phys. - 2011. -
Vol. 113
,
Is. 1
. - P113-120,
DOI
10.1134/S106377611105013X. - Cited Reference Count: 27. - Russian Foundation for Basic ResearchRussian Foundation for Basic Research (RFBR) [10-02-00846], This work was supported by the Russian Foundation for Basic Research, project no. 10-02-00846. . - JUL. - ISSN 1063-7761. - ISSN 1090-6509
Рубрики:
Physics, Multidisciplinary
Аннотация:
The magnetoresonance and dielectric properties of a number of crystals of a new family of multiferroics, namely, rare-earth
ferroborates
RFe3(BO3)(4) (R = Y, Eu, Pr, Tb, Tb0.25Er0.75), are studied in the submillimeter frequency range (nu = 3-20 cm(-1)).
Ferroborates
with R = Y, Tb, and Eu exhibit permittivity jumps at temperatures of 375, 198, and 58 K, respectively, which are caused by the R32 - P3(1)2(1) phase transition. Antiferromagnetic resonance (AFMR) modes in the subsystem of Fe3+ ions are detected in the range of antiferromagnetic ordering (T≺T-N=30-40K) in all
ferroborates
that have either an easy-plane (Y, Eu) or easy-axis (Pr, Tb, Tb0.25Er0.75) magnetic structure. The AFMR frequencies are found to depend strongly on the magnetic anisotropy of a rare-earth ion and its exchange interaction with the Fe subsystem, which determine the type of magnetic structure and the sign and magnitude of an effective anisotropy constant. The basic parameters of the magnetic interactions in these
ferroborates
are found, and the magnetoelectric contribution to AFMR is analyzed.
WOS
Держатели документа:
Russian Acad Sci, Inst Gen Phys, Moscow 119991, Russia;
Moscow MV Lomonosov State Univ, Moscow 119991, Russia;
Russian Acad Sci, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia
Доп.точки доступа:
Kuz'menko, A. M.; Mukhin, A. A.; Ivanov, V. Yu.; Kadomtseva, A. M.; Lebedev, S. P.; Bezmaternykh, L. N.; Безматерных, Леонард Николаевич
}
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12.
Antiferromagnetic resonance and
magnetic investigations of rare-earth
ferroborates
[Text] / V. Tugarinov, A. Pankrats, S. Kondyan [et al.]> //
Moscow Int. Symp. on Magnet. (MISM-2011) : Book of abstracts. - 2011. - Ст. 24OR-O-10. - P. 623. - Библиогр.: 3. - Work is supported by RFBR grant 10-02-00765
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Доп.точки доступа:
Tugarinov, V. I.; Тугаринов, Василий Иванович; Pankrats, A. I.; Панкрац, Анатолий Иванович; Kondyan, S.; Velikanov, D. A.; Великанов, Дмитрий Анатольевич; Temerov, V. L.; Темеров, Владислав Леонидович; Moscow International Symposium on Magnetism(5 ; 2011 ; Aug. ; 21-25 ; Moscow)
}
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13.
Демидов, А. А.
Магнитные фазовые переходы в ферроборатах Nd1-xDyxFe3(BO3)4 / А. А. Демидов, И. А. Гудим, Е. В. Еремин> // Журн. эксперим. и теор. физ. - 2012. -
Т. 141
,
Вып. 2
. - С. 294-309. - Библиогр.: 29 назв. - Работа выполнена при финансовой поддержке гранта Президента РФ (МК-497.201.2) . - ISSN 0044-4510
ГРНТИ
29.19.39
Аннотация:
Исследованы магнитные свойства монокристаллов ферроборатов замещенных составов Nd1-xDyxFe3(BO3)4 (x=0.15, 0.25) с конкурирующими обменными Nd-Fe- и Dy-Fe-взаимодействиями. Для каждого состава обнаружены спонтанный спин-переориентационный переход из легкоосного в легкоплоскостное состояние и ступенчатые аномалии на кривых намагничивания при спин-флоп-переходе, индуцируемом магнитным полем B || c. Измеренные свойства и эффекты проинтерпретированы в рамках единого теоретического подхода, который базируется на приближении молекулярного поля и расчетах в модели кристаллич. поля для редкоземельного иона. Описаны экспериментальные температурные зависимости начальной магнитной восприимчивости от T=2 K до T=300 K, аномалии на кривых намагничивания при B || c в полях до 1,8 Тл, их эволюция с температурой, а также температурные и полевые зависимости намагниченности в полях до 9 Тл. При интерпретации экспериментальных данных определены параметры кристаллического поля тригональной симметрии для редкоземельной подсистемы и параметры обменных Nd-Fe- и Dy-Fe-взаимодействий.
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РИНЦ
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Переводная версия
Magnetic phase transitions in Nd1−xDyxFe3(BO3)4
ferroborates
. - [Б. м. : б. и.]
Держатели документа:
Институт физики им. Л.В. Киренского СО РАН
Доп.точки доступа:
Гудим, Ирина Анатольевна; Gudim, Irina, A.; Еремин, Евгений Владимирович; Eremin, Evgenii, V.
}
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14.
Demidov, A. A.
Magnetic properties of Nd0.9Dy0.1Fe3(BO3)4 / A. A. Demidov, I. A. Gudim, E. V. Eremin> // Physica B. - 2012. -
Vol. 407
,
Is. 3
. - P. 393-397,
DOI
10.1016/j.physb.2011.11.004. - Cited References: 18. - This study was supported, in part, by Russian Federation's President Grant MK-497.2010.2 (A.A.D.). . - ISSN 0921-4526
РУБ
Physics, Condensed Matter
Рубрики:
NDFE3(BO3)4
HOFE3(BO3)4
MULTIFERROICS
Кл.слова (ненормированные):
Phase transitions
--
Rare-earth
ferroborates
RFe3(BO3) 4
--
Multiferroics
Аннотация:
The magnetic properties of trigonal Nd0.9Dy0.1Fe3(BO3)4 substituted compound with the competitive Nd–Fe and Dy–Fe exchange interactions have been investigated. It has been shown that in Nd0.9Dy0.1Fe3(BO3)4 a spontaneous spin-reorientation transition from an ease-axis state to an easy-plane occurs near 8 K. Anomalies of the magnetization curves are observed in a spin-flop transition induced by the magnetic field B II c. The calculations were performed using a molecular-field approximation and a crystal-field model for the rare-earth subsystem. Extensive experimental data on the magnetic properties of Nd0.9Dy0.1Fe3(BO3)4 have been interpreted and good agreement between theory and experiment has been achieved using the obtained theoretical dependences.
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Держатели документа:
[Demidov, A. A.] Bryansk State Tech Univ, Bryansk 241035, Russia
[Gudim, I. A.
Eremin, E. V.] Russian Acad Sci, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
Доп.точки доступа:
Gudim, I. A.; Гудим, Ирина Анатольевна; Eremin, E. V.; Еремин, Евгений Владимирович
}
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15.
Demidov, A. A.
Magnetic properties of Nd 0.6Dy 0.4Fe 3(BO 3) 4 / A. A. Demidov, I. A. Gudim, E. V. Eremin> //
Diffusion and Defect Data Pt.B: Solid State Phenomena. - 2012. -
Vol. 190
. - P. 261-264,
DOI
10.4028/www.scientific.net/SSP.190.261 . - ISBN 9783037854365
Кл.слова (ненормированные):
Multiferroics
--
Phase transitions
--
Rare-earth
ferroborates
RFe 3(BO 3) 4
--
Experimental data
--
Magnetization curves
--
Molecular field approximation
--
Multiferroics
--
Rare-earth
ferroborates
RFe
--
Spin reorientation transitions
--
Spin-flop transitions
--
Substituted compounds
--
Magnetic materials
--
Magnetic properties
--
Neodymium
--
Phase transitions
--
Dysprosium compounds
Аннотация:
The magnetic properties of trigonal Nd 0.6Dy 0.4Fe 3(BO 3) 4 substituted compound with the competitive Nd-Fe and Dy-Fe exchange interactions have been investigated. It has been shown that in Nd 0.6Dy 0.4Fe 3(BO 3) 4a spontaneous spin-reorientation transition from an ease-axis state to an easy-plane occurs near 31 K. Anomalies of the magnetization curves are observed in a spin-flop transition induced by the magnetic field B||c. The calculations were performed using a molecularfield approximation and a crystal-field model for the rare-earth subsystem. Extensive experimental data on the magnetic properties of Nd 0.6Dy 0.4Fe 3(BO 3) 4have been interpreted and good agreement between theory and experiment has been achieved using the obtained theoretical dependences. В© (2012) Trans Tech Publications.
Scopus
Доп.точки доступа:
Gudim, I. A.; Гудим, Ирина Анатольевна; Eremin, E. V.; Еремин, Евгений Владимирович; Moscow International Symposium on Magnetism(5 ; 2011 ; Aug. ; 21-25 ; Moscow)
}
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16.
Magnetoelectric and magnetoelastic
properties of easy-plane
ferroborates
with a small ionic radius / A. M. Kadomtseva [et al.]> // J. Exp. Theor. Phys. - 2012. -
Vol. 114
,
Is. 5
. - P. 810-817,
DOI
10.1134/S1063776112030053. - Cited References: 26. - This work was supported by the Russian Foundation for Basic Research (project nos. 10-02-00846a, 09-02-01355, and 12-02-01261). . - ISSN 1063-7761
РУБ
Physics, Multidisciplinary
Рубрики:
EARTH
HoFe3(BO3)4
DyFe3(BO3)4
RFe3(BO3)4
Аннотация:
The magnetic, magnetoelectric, and magnetoelastic properties of RFe3(BO3)4
ferroborates
are studied. The measurement of the field dependences of the magnetoelectric polarization along the a axis in holmium ferroborate and in the mixed composition Ho0.5Sm0.5Fe3(BO3)4 revealed the following dependences for easy-plane
ferroborates
: (a) the longitudinal and transverse magnetoelectric effects have the opposite signs and (b) magnetically induced polarization changes its sign in a field close to the field of exchange between rare-earth and iron ions. These dependences agree well with theoretical predictions based on the symmetry of the compounds. The relatively low f-d exchange field in holmium ferroborate (about 20 kOe), which magnetizes the rare-earth subsystem, causes smaller polarization jumps (about 30 μC/m2) in fields lower than 10 kOe as compared to the jumps in other easy-plane
ferroborates
(R = Sm, Nd). The increase in the electric polarization induced in HoFe3(BO3)4 in magnetic fields higher than 100 kOe (200–300 μC/m2) is found to be significantly smaller than in neodymium ferroborate, which indicates a substantial dependence of the magnetoelectric effects on the electronic structure of a rare-earth ion.
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Публикация на русском языке
Магнитоэлектрические и магнитоупругие свойства легкоплоскостных ферроборатов с малым ионным радиусом [Текст] / А. М. Кадомцева [и др.] // Ж. эксперим. и теор. физ. : Наука, 2012. - Т. 141 Вып. 5. - С. 930-938
Держатели документа:
[Kadomtseva, A. M.
Vorob'ev, G. P.
Popov, Yu F.
Pyatakov, A. P.] Moscow MV Lomonosov State Univ, Moscow 119992, Russia
[Pyatakov, A. P.
Mukhin, A. A.
Ivanov, V. Yu
Zvezdin, A. K.] Russian Acad Sci, Inst Gen Phys, Moscow 119991, Russia
[Gudim, I. A.
Temerov, V. L.
Bezmaternykh, L. N.] Russian Acad Sci, Siberian Branch, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
Доп.точки доступа:
Kadomtseva, A. M.; Vorob'ev, G. P.; Popov, Y. F.; Pyatakov, A. P.; Mukhin, A. A.; Ivanov, V. Y.; Zvezdin, A. K.; Gudim, Irina A.; Гудим, Ирина Анатольевна; Temerov, V. L.; Темеров, Владислав Леонидович; Bezmaternykh, L. N.; Безматерных, Леонард Николаевич
}
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17.
Nature of optical
properties of GdFe3(BO3)4 and GdFe2.1Ga0.9(BO3)4 crystals and other 3d5 antiferromagnets / A. V. Malakhovskii [et al.]> // Eur. Phys. J. B. - 2012. -
Vol. 85
,
Is. 2
. - P. 80,
DOI
10.1140/epjb/e2012-20953-1. - Cited References: 70. - The work was supported by the Russian Foundation for Basic Researches Grant 12-02-00026 and by Russian President Grant NSh-1044.2012.2. . - ISSN 1434-6028
РУБ
Physics, Condensed Matter
Рубрики:
IRON BORATE GDFE3(BO3)4
D-D TRANSITIONS
EARTH
FERROBORATES
RFE3(BO3)4
ABSORPTION-SPECTRA
OCTAHEDRAL COMPLEXES
ELECTRONIC-STRUCTURE
NEEL TEMPERATURE
FINE-STRUCTURE
EXCHANGE
IONS
Аннотация:
Influence of the partial substitution of paramagnetic Fe3+ ions by diamagnetic Ga3+ ions in the trigonal crystal GdFe3 (BO3)4 on its optical and magnetic properties is studied and discussed in connection with problems common for all antiferromagnets containing 3d 5 ions. Polarized optical absorption spectra and linear birefringence of GdFe3 (BO3)4 and GdFe2.1Ga0.9 (BO3)4 single crystals have been measured in the temperature range 85–293 K. Specific heat temperature dependence (2–300 K) and structure of GdFe2.1Ga0.9 (BO3)4 crystal have been also studied. As a result of substitution of 30% Fe to Ga the Neel temperature diminishes from 38 till 16 K, the strong absorption band edge shifts on 860 cm-1 (0.11 eV) to higher energy and the d-d transitions intensity decreases substantially larger than the Fe concentration does. Strong absorption band edge is shown to be due to Mott-Hubbard transitions. Correlation between position of the strong absorption band edge and the Neel temperature of antiferromagnets has been revealed. Properties of the doubly forbidden d-d transitions in the studied crystals and in other antiferromagnets are explained within the framework of the model of the exchange-vibronic pair absorption, which is theoretically analyzed in detail. The model permitted us to determine the connection between parameters of d-d absorption bands (intensity, width and their temperature dependences), on the one hand, and the exchange, spin-orbit and electron-lattice interactions, on the other hand.
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Держатели документа:
Russian Acad Sci, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia
Доп.точки доступа:
Malakhovskii, A. V.; Малаховский, Александр Валентинович; Sukhachev, A. L.; Сухачев, Александр Леонидович; Vasil'ev, A. D.; Васильев, Александр Дмитриевич; Leont'ev, A. A.; Леонтьев, Андрей Александрович; Kartashev, A. V.; Карташев, Андрей Васильевич; Temerov, V. L.; Темеров, Владислав Леонидович; Gudim, I. A.; Гудим, Ирина Анатольевна
}
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18.
Demidov, A. A.
Magnetic phase transitions in Nd1−xDyxFe3(BO3)4
ferroborates
/ A. A. Demidov, I. A. Gudim, E. V. Eremin> // J. Exp. Theor. Phys. - 2012. -
Vol. 114
,
Is. 2
. - P. 259-272,
DOI
10.1134/S1063776111160023. - Cited References: 29. - This study was supported financially by the President of the Russian Federation (grant no. MK-497.2010.2). . - ISSN 1063-7761
РУБ
Physics, Multidisciplinary
Рубрики:
SPIN REORIENTATION
CRYSTAL
DY
ND
Аннотация:
The magnetic properties of ferroborate single crystals with substituted compositions Nd1−xDyxFe3(BO3)4 (x = 0.15, 0.25) with competing exchange Nd-Fe and Dy-Fe interactions are investigated. For each composition, we observed a spontaneous spin-reorientation transition from the easy-axis to the easy-plane state and step anomalies on the magnetization curves for the spin-flop transition induced by a magnetic field B | c. The measured parameters and effects are interpreted using a unified theoretical approach based on the molecular field approximation and on calculations performed in the crystal-field model for the rare-earth ion. The experimental temperature dependences of the initial magnetic susceptibility from T = 2 K to T = 300 K, anomalies on the magnetization curves for B | c in fields up to 1.8 T, and their evolution with temperature, as well as temperature and field dependences of magnetization in fields up to 9 T are described. In the interpretation of experimental data, the crystal-field parameters in trigonal symmetry for the rare-earth subsystem are determined, as well as the parameters of Nd-Fe and Dy-Fe exchange interactions.
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Публикация на русском языке
Демидов, А. А. Магнитные фазовые переходы в ферроборатах Nd1-xDyxFe3(BO3)4 / А. А. Демидов // Журнал экспериментальной и теоретической физики : Издательство "Наука", 2012. - Т. 141, N 2. - С. 294-309. - ISSN 0044-4510
Держатели документа:
[Demidov, A. A.] Bryansk State Tech Univ, Bryansk 241035, Russia
[Gudim, I. A.
Eremin, E. V.] Russian Acad Sci, Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660038, Russia
Доп.точки доступа:
Gudim, I. A.; Гудим, Ирина Анатольевна; Eremin, E. V.; Еремин, Евгений Владимирович; Демидов А. А.
}
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19.
Magneto-optical activity of
f-f transitions in trigonal alumo- and
ferroborates
/ A. L. Sukhachev [et al.]> //
XV Int. Feofilov symp. on spectroscopy of crystals doped with rare earth and transition metal ions. - Kazan, 2013. - P. 113
Перевод заглавия:
Магнитооптическая активность f-f переходов в тригональных алюмо- и ферроборатах
Аннотация:
Представлены результаты изучения спектров поглощения и магнитного кругового дихроизма и магнитооптической активности (МОА) f-f переходов в кристаллах DyFe3(BO3)4, Nd0.5Gd0.5Fe3(BO3)4, ErAl3(BO3)4, TmAl3(BO3)4, YbAl3(BO3)4. Обнаружено, что МОА большинства переходов не следует закону Кюри-Вейсса. Это явление объяснено теоретически.
Материалы конференции
Доп.точки доступа:
Sukhachev, A. L.; Сухачев, Александр Леонидович; Malakhovskii, A. V.; Малаховский, Александр Валентинович; Kutsak, T. V.; Strokova, A. Yu.; Sokolov, A. E.; Соколов, Алексей Эдуардович; Temerov, V. L.; Темеров, Владислав Леонидович; Gudim, I. A.; Гудим, Ирина Анатольевна; International Feofilov symposium on spectroscopy of crystals doped with rare earth and transition metal ions(15 ; 2013 ; Sept. ; 16-20 ; Казань)
}
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20.
Influence of f-f
electron transitions on the local properties in vicinity of the excited ions in trigonal alumo- and
ferroborates
/ A. V. Malakhovskii [et al.]> // XV Int. Feofilov symp. on spectroscopy of crystals doped with rare earth and transition metal ions. - Kazan, 2013. - Ст. PI_4. - P. 112
Перевод заглавия:
Влияние f-f электронных переходов на локальные свойства в окрестности возбужденных ионов в тригональных алюмо- и ферроборатах
Аннотация:
Представлены результаты изучения спектров поглощения кристаллов TbFe3(BO3)4, TmAl3(BO3)4, YbAl3(BO3)4, DyFe3(BO3)4 и Nd0.5Gd0.5Fe3(BO3)4. Показано, что геометрия локального окружения и локальные магнитные свойства могут меняться в процессе f-f электронных переходов.
Материалы конференции
Доп.точки доступа:
Malakhovskii, A. V.; Малаховский, Александр Валентинович; Gnatchenko, S. L.; Kachur, I. S.; Piryatinskaya, V. G.; Sukhachev, A. L.; Сухачев, Александр Леонидович; Sokolov, A. E.; Соколов, Алексей Эдуардович; Temerov, V. L.; Темеров, Владислав Леонидович; Gudim, I. A.; Гудим, Ирина Анатольевна; International Feofilov symposium on spectroscopy of crystals doped with rare earth and transition metal ions (15 ; 2013 ; Sept. ; 16-20 ; Казань)
}
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