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Electron paramagnetic resonance of Cr3+ ions in ABO3 (A = Sc, Lu, In) diamagnetic crystals / A. M. Vorotynov [et al.] // J. Exp. Theor. Phys. - 2016. - Vol. 122, Is. 4. - P. 734-737, DOI 10.1134/S1063776116040087. - Cited References:11 . - ISSN 1063-7761. - ISSN 1090-6509

РУБ Physics, Multidisciplinary
Рубрики:
Spin-resonance
   Pairs
   Anisotropy
   CrBO3
   VBO3
Аннотация: A magnetic resonance method is applied to the investigation of a number of isostructural diamagnetic compounds ABO3 (A = Sc, Lu, In) with small additions of Cr3+ ions (S = 3/2) sufficient to observe single-ion spectra. It is shown that the resonance spectra for isolated Cr3+ ions can be described to a good accuracy by the ordinary axial spin Hamiltonian for 3d ions in octahedral oxygen environment. The parameters of the spin Hamiltonian are determined. It is established that Cr3+ ions in these crystals are characterized by easy-axis-type anisotropy.

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Публикация на русском языке Электронный парамагнитный резонанс ионов Cr3+ в диамагнитных кристаллах ABO3 (A = Sc, Lu, In) [Текст] / А. М. Воротынов [и др.] // Журн. эксперим. и теор. физ. - 2016. - Т. 149 Вып. 4. - С. 848-851

Держатели документа:
Russian Acad Sci, Siberian Branch, Kirenskii Inst Phys, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Krasnoyarsk 660041, Russia.

Доп.точки доступа:
Vorotynov, A. M.; Воротынов, Александр Михайлович; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Rudenko, V. V.; Руденко, Валерий Васильевич; Vorotynova, O. V.
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Electronic properties of Fe1-xVxBO3 at ambient conditions and at high pressure / N. V. Kazak [et al.] // 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. S795-S800, DOI 10.1088/0953-8984/17/11/008. - Cited References: 16 . - ISSN 0953-8984

РУБ Physics, Condensed Matter
Рубрики:
FEBO3 SINGLE-CRYSTALS
   SOLID-SOLUTIONS
   BAND-STRUCTURE
   TRANSITION
   MOSSBAUER
   MAGNETIZATION
   MODEL
   VBO3
Кл.слова (ненормированные):
Electronic properties -- Ferrimagnetic materials -- High pressure effects -- High temperature superconductors -- Metal insulator transition -- Single crystals -- Superconductivity -- Thermal effects -- Carrier localization -- Correlation effects -- Critical pressure -- Semiconducting behavior -- Oxide superconductors
Аннотация: We present the results of an in-plane resistivity study of the solid solutions Fe1-xVxBO3. The measurements were made on single crystals with concentration x = 0.02, 0.13, 0.18, 0.3, 0.95, 1.0 in the temperature range 220-600 K. Semiconducting behaviour for samples with x >= 0.13 was found. Mott variable-range-hopping transport rho(T) = rho(0)exp(T*/T)(alpha) has been observed with alpha = 1/4 at T <290 K, suggesting carrier localization. Above this temperature the activation-type conductivity, with activation energies, E-a, about 1 eV for all samples, is observed. The possible electronic states and band structure of Fe1-xVx BO3 crystals are discussed in the different pressure ranges: P < P-c(Fe), p(c)(Fe) < p < p(c)(V) P > P-c(V) where p(c)(Fe) P-c(V) are the critical pressure values for FeBO3 and VBO3, respectively.

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Держатели документа:
Russian Acad Sci, Kirensky Inst Phys, Siberian Branch, Krasnoyarsk 660036, Russia
Univ Cologne, Inst Phys 2, D-50937 Cologne, Germany
Krasnoyarsk State Tech Univ, Krasnoyarsk 660074, Russia
II Physikalisches Institut, Universitat zu Koeln, 50937 Koeln, Germany
Krasnoyarsk State Tech. University, 660074 Krasnoyarsk, Russian Federation

Доп.точки доступа:
Kazak, N. V.; Казак, Наталья Валерьевна; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Abd-Elmeguid, M. M.; Ivanova, N. B.; Иванова, Наталья Борисовна
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EXAFS study of Fe1-xVxBO3 system / N. V. Kazak [et al.] // Physica B. - 2006. - Vol. 378-80: International Conference on Strongly Correlated Electron Systems (SECES 05) (JUL 26-30, 2005, Vienna, AUSTRIA). - P. 327-329, DOI 10.1016/j.physb.2006.01.119. - Cited References: 10 . - ISSN 0921-4526

РУБ Physics, Condensed Matter
Рубрики:
MANY-ELECTRON MODEL
   CALCITE STRUCTURE
   BAND-STRUCTURE
   FEBO3
   VBO3
   TRANSITION
   CRBO3
Кл.слова (ненормированные):
strongly correlated electron systems -- X-ray absorption spectra -- transition-metal compounds -- Strongly correlated electron systems -- Transition-metal compounds -- X-ray absorption spectra -- Absorption -- Atomic force microscopy -- Solid solutions -- Transition metal compounds -- X ray analysis -- Strongly correlated electron systems -- X-ray absorption spectra -- Iron compounds
Аннотация: The room-temperature EXAFS measurements have been made on FeBO3 and VBO3, as well as on Fe1-xVxBO3 series with concentration x=0.13,0.3, and 0.95. The first-shell Me-O bond lengths deduced from EXAFS have shown a compositional independence. It has been found that Fe1-xVxBO3 forms solid solutions with random distribution of Fe3+ and V3+ ions. (c) 2006 Elsevier B.V. All rights reserved.

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Держатели документа:
RAS, SB, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
RAS, SB, Budker Inst Nucl Phys, Novosibirsk 630090, Russia
ИФ СО РАН
Kirensky Institute of Physics, SB of RAS, Akademgorodok, 660036 Krasnoyarsk, Russian Federation
Budker Institute of Nuclear Physics, SB of RAS, 630090 Novosibirsk, Russian Federation

Доп.точки доступа:
Kazak, N. V.; Казак, Наталья Валерьевна; Potseluyko, A. M.; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Alexandrovsky, A. S.; Chernov, V. A.; Rudenko, V. V.; Руденко, Валерий Васильевич
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Experimental observation of the virtual electronic states of a mott-Hubbard insulator FeBO3 in infrared absorption spectra / S. G. Ovchinnikov [et al.] // JETP Letters. - 2009. - Vol. 90, Is. 7. - P. 519-523, DOI 10.1134/S0021364009190059. - Cited References: 17. - We are grateful to I. S. Edelman, Yu. P. Sukhorukov, V. F. Shabanov, and A. N. Vtyurin for discussions of the results. This work was supported by the Russian Foundation for Basic Research (project nos. 07-02-00226, 09-02-00171-a, and 09-02-90730-mob_st); by the Council of the President of the Russian Federation for Support of Young Scientists and Leading Scientific Schools (project no. MK-4278.2008.2); by the Branch of Physical Sciences, Russian Academy of Sciences (program "Strong Electron Correlations"); and by the Siberian Branch and Ural Division, Russian Academy of Sciences (integration project no. 40). . - ISSN 0021-3640

РУБ Physics, Multidisciplinary
Рубрики:
BAND-STRUCTURE
   PRESSURE
   MODEL
   VBO3
Аннотация: A number of new peaks close to the previously predicted energies of virtual electronic states [S.G. Ovchinnikov and V.N. Zabluda, Zh. Eksp. Teor. Fiz. 125, 150 (2004) [JETP 98, 135 (2004)]] have been observed in the absorption spectra of FeBO3 single crystals in the infrared range. The 0.27-eV peak was absent in the scheme presented in the work cited above and, to explain it, a multielectron theory taking into account the (2) T (2) low-spin term of the Fe3+ ion has been developed.

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Держатели документа:
[Ovchinnikov, S. G.
Kazak, N. V.
Rudenko, V. V.] Russian Acad Sci, Siberian Branch, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
[Ovchinnikov, S. G.] Siberian Fed Univ, Krasnoyarsk 660041, Russia
[Gizhevskii, B. A.
Telegin, A. V.] Russian Acad Sci, Ural Div, Inst Met Phys, Ekaterinburg 620041, Russia
ИФ СО РАН
Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
Institute of Metal Physics, Ural Division, Russian Academy of Sciences, ul. S. Kovalevskoi 18, Yekaterinburg, 620041, Russian Federation

Доп.точки доступа:
Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Gizhevskii, B. A.; Kazak, N. V.; Казак, Наталья Валерьевна; Rudenko, V. V.; Руденко, Валерий Васильевич; Telegin, A. V.; Russian Foundation for Basic Research [07-02-00226, 09-02-00171-a, 09-02-90730]; Russian Federation; Young Scientists and Leading Scientific Schools [MK-4278.2008.2]; Branch of Physical Sciences, Russian Academy of Sciences (program "Strong Electron Correlations"); Siberian Branch and Ural Division, Russian Academy of Sciences
}
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    Electron Paramagnetic Resonance of Cr3+ Ions in ABO(3) (A = Sc, In, Ga) Diamagnetic Crystals / A. M. Vorotynov [et al.] // J. Exp. Theor. Phys. - 2018. - Vol. 127, Is. 6. - P. 1067-1073, DOI 10.1134/S1063776118120245. - Cited References: 14 . - ISSN 1063-7761. - ISSN 1090-6509
Рубрики:
SPIN-RESONANCE
   PAIRS
   ANISOTROPY
   VBO3
Аннотация: A magnetic resonance method is applied to the investigation of a number of isostructural diamagnetic compounds ABO3 (A = Sc, In, and Ga) with small additions of Cr3+ ions (S = 3/2) sufficient to observe single-ion and pair spectra. It is shown that the resonance spectra for isolated Cr3+ ions can be described to a good accuracy by the ordinary axial spin Hamiltonian for 3d ions in octahedral oxygen environment. The parameters of the spin Hamiltonian are determined for single Cr3+ ion and Cr3+–Cr3+ pair. Lattice distorsions of the parent ABO3 crystals caused by the Cr3+ impurities is discussed.

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Публикация на русском языке Электронный парамагнитный резонанс ионов Cr3+ в диамагнитных кристаллах ABO3 (A = Sc, In, Ga) [Текст] / А. М. Воротынов [и др.] // Журн. эксперим. и теор. физ. - 2018. - Т. 154 Вып. 6. - С. 1160-1167

Держатели документа:
Russian Acad Sci, Kirensky Inst Phys, Fed Res Ctr, Krasnoyarsk Sci Ctr,Siberian Branch, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Krasnoyarsk 660041, Russia.

Доп.точки доступа:
Vorotynov, A. M.; Воротынов, Александр Михайлович; Rudenko, V. V.; Руденко, Валерий Васильевич; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Molokeev, M. S.; Молокеев, Максим Сергеевич
}
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