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Magnetic Properties of Single Crystals of Ludwigites Cu2MBO5 (M = Fe3+, Ga3+) / G. A. Petrakovskii [et al.] // Phys. Solid State. - 2009. - Vol. 51, Is. 10. - P. 2077-2083, DOI 10.1134/S106378340910014X. - Cited References: 18 . - ISSN 1063-7834

РУБ Physics, Condensed Matter
Рубрики:
FE3O2BO3
BEHAVIOR
Аннотация: High-quality single crystals of ludwigites Cu2MBO5 (M = Fe3+, Ga3+) have been grown, and the magnetic, resonance, and Mossbauer studies have been performed. It is established that the Cu2FeBO5 and Cu2GaBO5 compounds are antiferromagnets with Neel temperatures of 32 and 3.4 K, respectively. A model of the magnetic structure of the compounds is proposed. It is shown that the magnetic properties of the ludwigites are substantially dependent on the degree of ion distribution over crystallographic positions.

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Держатели документа:
[Petrakovskii, G. A.
Bezmaternykh, L. N.
Velikanov, D. A.
Vorotynov, A. M.
Bayukov, O. A.] Russian Acad Sci, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia
[Petrakovskii, G. A.
Bayukov, O. A.] Siberian Fed Univ, Krasnoyarsk 660041, Russia
[Schneider, M.] Paul Scherrer Inst, CH-5232 Villigen, Switzerland
ИФ СО РАН
Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, pr. Svobody 79, Krasnoyarsk, 660041, Russian Federation
Paul Scherrer Institut, Villigen, 5232, Switzerland

Доп.точки доступа:
Petrakovskii, G. A.; Петраковский, Герман Антонович; Bezmaternykh, L. N.; Безматерных, Леонард Николаевич; Velikanov, D. A.; Великанов, Дмитрий Анатольевич; Vorotynov, A. M.; Воротынов, Александр Михайлович; Bayukov, O. A.; Баюков, Олег Артемьевич; Schneider, M.
}
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Crystal growth, structure, magnetic properties and theoretical exchange interaction calculations of Cu2MnBO5 / S. Sofronova [et al.] // J. Magn. Magn. Mater. - 2016. - Vol. 420. - P. 309-316, DOI 10.1016/j.jmmm.2016.07.019. - Cited References: 35. - X-ray diffraction experiment was carried out at the Centre on Molecular Design and Ecologically Safe Technologies at the Novosibirsk State University. The reported study was funded by Russian Foundation for Basic Research (RFBR) and Government of Krasnoyarsk Territory according to the research project No. 16-42-243028. . - ISSN 0304-8853

РУБ Materials Science, Multidisciplinary + Physics, Condensed Matter
Рубрики:
SPIN-GLASS BEHAVIOR
   SINGLE-CRYSTALS
   SUPEREXCHANGE INTERACTIONS
   LUDWIGITE
   DIELECTRICS
   CO3B2O6NI3B2O6
   WARWICKITES
   FE3O2BO3
   IFEFFIT
   NI3B2O6
Кл.слова (ненормированные):
Oxyborates -- Ludwigites -- XMCD -- EXAFS -- Magnetism
Аннотация: Single crystals of ludwigite Cu2MnBO5 were synthesized by flux growth technique. The detailed structural and magnetic characterizations of the synthesized samples have been carried out. The cations composition of the studied crystal was determined using X-ray diffraction and EXAFS technique, the resulting composition differ from the content of the initial Mn2O3–CuO components of the flux. Magnetic susceptibility measurements and the calculations of the exchange integrals in frameworks of indirect coupling model revealed that monoclinic distortions strongly affect exchange interactions and appearance of magnetic ordering phase at the temperature T=93 K. The hypothesis of the existence of several magnetic subsystems was supposed. © 2016 Elsevier B.V.

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Держатели документа:
L.V. Kirensky Institute of Physics, Siberian Branch of Russian Academy of Science, Krasnoyarsk, Russian Federation
M V Reshetnev Siberian State Aerospace University, Krasnoyarsk, Russian Federation
V.S. Sobolev Institute of Geology and Mineralogy, SB RAS, Novosibirsk, Russian Federation
Novosibirsk State University, Novosibirsk, Russian Federation
Institute of Physics, University of Mainz, Mainz, Germany
Institute of Inorganic and Analytical Chemistry, University of Mainz, Mainz, Germany
Lund University, MAX IV Laboratory, Lund, Sweden
National Research Centre “Kurchatov Institute”, Moscow, Russian Federation

Доп.точки доступа:
Sofronova, S. N.; Софронова, Светлана Николаевна; Moshkina, E. M.; Мошкина, Евгения Михайловна; Nazarenko, I. I.; Назаренко, Илья Иванович; Seryotkin, Yu. V.; Nepijko, S. A.; Ksenofontov, V.; Medjanik, K.; Veligzhanin, A. A.; Bezmaternykh, L. N.; Безматерных, Леонард Николаевич
}
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Low-field magnetization of ludwigites Co3O2BO3 and Co3-x Fe (x) O2BO3 (x a parts per thousand 0.14) / N. V. Kazak [et al.] // Phys. Solid State. - 2009. - Vol. 51, Is. 5. - P. 966-969, DOI 10.1134/S1063783409050138. - Cited References: 17. - This study was supported by the Branch of General Physics and Astronomy of the Russian Academy of Sciences (program "Strongly Correlated Electrons") and the Federal Agency for Science and Innovation (project no. MK-4278.2008.2). . - ISSN 1063-7834

РУБ Physics, Condensed Matter
Рубрики:
ELECTRICAL-PROPERTIES
FE3O2BO3
BEHAVIOR
Аннотация: Ludwigite single crystals of compositions Co3O2BO3 and Co3 - x Fe (x) O2BO3 (x a parts per thousand 0.14) have been synthesized. The crystal structure is investigated at room temperature, and the magnetization is studied in the temperature range T = 4.2-100 K in magnetic fields of up to 600 Oe. The orthorhombic symmetry is revealed, and the unit cell parameters are determined. A number of features are established for the temperature dependence of the magnetization. In unsubstituted Co3O2BO3, two magnetic transitions are found at T (C1) = 43 K and T (C2) = 15 K. At temperatures below 40 K, spin-glass state is revealed. Substitution of iron ions for cobalt ions leads to a noticeable shift in the magnetic transitions toward the high-temperature range: T (C1) = 83 K and T (C2) = 74 K. A ferromagnetic ordering of the P type is found in the Co3 - x Fe (x) O2BO3 (x a parts per thousand 0.14) compound.

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Публикация на русском языке Низкополевая намагниченность людвигитов Co3O2BO3 и Co3−xFexO2BO3 (x ≈ 0.14) [Текст] / Н. В. Казак [и др.] // Физ. тверд. тела. - 2009. - Т. 51 Вып. 5. - С. 916-919

Держатели документа:
[Kazak, N. V.
Rudenko, V. V.
Vasil'ev, A. D.
Velikanov, D. A.
Ovchinnikov, S. G.] Russian Acad Sci, Siberian Branch, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
[Ivanova, N. B.] Siberian Fed Univ, Krasnoyarsk 660041, Russia
ИФ СО РАН
Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Akademgorodok 50, Krasnoyarsk 660036, Russian Federation
Siberian Federal University, pr. Svobodnyi 79, Krasnoyarsk 660041, Russian Federation

Доп.точки доступа:
Kazak, N.V.; Ivanova, N.B.; Rudenko, V.V.; Vasil'ev, A.D.; Velikanov, D.A.; Ovchinnikov, S.G.; Federal Agency for Science and Innovation [MK-4278.2008.2]
}
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