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1.


   
    Specific features of magnetic ordering in the SmFeGe2O7 compound / T. V. Drokina [et al.] // Phys. Solid State. - 2014. - Vol. 56, Is. 6. - P. 1131-1136, DOI 10.1134/S1063783414060122. - Cited References: 10 . - ISSN 1063-7834. - ISSN 1090-6460
РУБ Physics, Condensed Matter
Рубрики:
NEUTRON-DIFFRACTION
   PR

   FERGE2O7

   R=LA

Аннотация: The results of the experimental investigation of the magnetic properties of the SmFeGe2O7 compound have been presented. It has been found that the temperature dependence of the susceptibility exhibits two features that coincide with the anomalies in the temperature dependence of the specific heat and indicate magnetic phase transitions in SmFeGe2O7. The external magnetic field induces a magnetic transition, the critical field of which depends on the temperature.

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Публикация на русском языке Особенности магнитного упорядочения в соединении SmFeGe2O7 [Текст] / Т. В. Дрокина [и др.] // Физ. тверд. тела : ФТИ РАН, 2014. - Т. 56 Вып. 6. - С. 1088-1092

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

Доп.точки доступа:
Drokina, T. V.; Дрокина, Тамара Васильевна; Petrakovskii, G. A.; Петраковский, Герман Антонович; Velikanov, D. A.; Великанов, Дмитрий Анатольевич; Molokeev, M. S.; Молокеев, Максим Сергеевич
}
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2.


   
    Effect of heterovalent substitution of rare-earth elements on the magnetic and transport properties of YBa2Cu3O7 / M. I. Petrov [et al.] // Phys. Solid State. - 2007. - Vol. 49, Is. 11. - P. 2047-2051, DOI 10.1134/S1063783407110054. - Cited References: 18 . - ISSN 1063-7834
РУБ Physics, Condensed Matter
Рубрики:
PR
   SUPERCONDUCTIVITY

   CE

   ND

   TRANSITION

   SYSTEM

   LA

Аннотация: The Y(1-x) Ce (x) Ba2Cu3O7 system with low cerium concentrations has been synthesized. The cerium solubility limit measured using x-ray powder diffraction analysis is about 2.4 at. %. The temperature dependences of the magnetization M(T) are measured for samples cooled in a magnetic field (FC) and in a zero field (ZFC). The difference between the magnetizations M-ZFC-M-FC at 77.4 K, which is proportional to the pinning potential, passes through a maximum at x = 0.0156. This concentration corresponds to the average distance (equal to eight lattice constants) between the impurity ions in the plane of the rare-earth elements, which is comparable to the diameter of Abrikosov vortices in YBa2Cu3O7.

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Держатели документа:
Russian Acad Sci, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia
ИФ СО РАН
Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk 660036, Russian Federation

Доп.точки доступа:
Petrov, M. I.; Петров, Михаил Иванович; Balaev, D. A.; Балаев, Дмитрий Александрович; Gokhfel'd, Yu. S.; Гохфельд, Юлия Сергеевна; Dubrovskii, A. A.; Дубровский, Андрей Александрович; Shaikhutdinov, K. A.; Шайхутдинов, Кирилл Александрович
}
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3.


   
    Low-temperature magnetic behavior of the rare-earth cobaltites GdCoO3 and SmCoO3 / N. B. Ivanova [et al.] // Phys. Solid State. - 2007. - Vol. 49, Is. 11. - P. 2126-2131, DOI 10.1134/S1063783407110182. - Cited References: 32. - This study was supported by the Branch of General Physics and Astronomy of the Russian Academy of Sciences within the framework of the program “Strong Electron Correlations” and the Russian Science Support Foundation . - ISSN 1063-7834
РУБ Physics, Condensed Matter
Рубрики:
METAL-INSULATOR-TRANSITION
   RCOO3 R

   SPIN-STATE

   OXIDE

   SM

   ND

   PEROVSKITE

   GLASSES

   PR

   EU

Аннотация: The temperature and magnetic field dependences of the static magnetization of the polycrystalline rare-earth cobaltites GdCoO3 and SmCoO3 have been measured. It is shown that, below room temperature, the magnetization of both compounds derives primarily from the rare-earth ion paramagnetism. The GdCoO3 and SmCoO3 compounds have been found to differ substantially in magnetic behavior, which can be traced to differences in their electronic shell structures. The magnetic behavior of GdCoO3 is close to that of an array of free Gd3+ ions, whereas in SmCoO3 the deviation from the free-ion properties is very large because of the Sm3+ ground state being crystal-field split. Van Vleck magnetic susceptibility measurements of SmCoO3 suggest that the splitting is similar to 10 K.

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Публикация на русском языке Сравнение одноэлектронного и многоэлектронного механизмов концентрационной зависимости зонной структуры ВТСП-купратов [Текст] / В. А. Гавричков [и др.] // Физ. тверд. тела. - 2007. - Т. 49 Вып. 11. - С. 1958-1963

Держатели документа:
Russian Acad Sci, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia
Univ Guadalajara, Dept Fis, CUCEI, Guadalajara 44430, Jalisco, Mexico
ИФ СО РАН
Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk 660036, Russian Federation
Departamento de Fisica, C.U.C.E.I., Universidad de Guadalajara, Guadalajara, Jalisco 44430, Mexico

Доп.точки доступа:
Ivanova, N. B.; Иванова, Наталья Борисовна; Kazak, N. V.; Казак, Наталья Валерьевна; Michel, C. R.; Balaev, A. D.; Балаев, Александр Дмитриевич; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич
}
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4.


   
    Effect of strontium and barium doping on the magnetic state and electrical conductivity of GdCoO3 / N. B. Ivanova [et al.] // Phys. Solid State. - 2007. - Vol. 49, Is. 8. - P. 1498-1506, DOI 10.1134/S1063783407080161. - Cited References: 36 . - ISSN 1063-7834
РУБ Physics, Condensed Matter
Рубрики:
PEROVSKITE
   ORDER

   OXIDE

   BEHAVIOR

   GLASSES

   LACOO3

   PR

   GD

   SM

   ND

Аннотация: A coordinated investigation of the magnetic and electrical properties of polycrystalline cobalt oxide compounds CdCoO3, Gd0.9Ba0.1CoO3, and Gd0.9Sr0.1CoO3 is carried out. Undoped GdCoO3 reveals a low conductivity; a magnetic moment of 7.4 mu(B) per molecule, which is less than the theoretical value for the Gd3+ ion; and an asymptotic Curie temperature of -6 K. Doping GdCoO3 with barium and strontium to substitution of 10 at. % Gd brings about an increase in the conductivity and magnetic transitions at T = 300 K for Gd0.9Ba0.1CoO3 and T = 170 K for Gd0.9Sr0.1CoO3. The magnetization anomalies imply the formation of magnetic clusters. The behavior of the electrical conductivity at high temperatures suggests a variable activation energy. At low temperatures, Mott hopping conduction sets in.

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Публикация на русском языке Влияние допирования стронцием и барием на магнитное состояние и электропроводность GdCoO[3] [Текст] / Н. Б. Иванова [и др.] // Физ. тверд. тела. - 2007. - Т. 49 Вып. 8. - С. 1427-1435

Держатели документа:
Russian Acad Sci, Siberian Div, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
Univ Guadalajara, CUCEI, Dept Fis, Guadalajara 44430, Jalisco, Mexico
ИФ СО РАН
Kirensky Institute of Physics, Siberian Division, Russian Academy of Sciences, Krasnoyarsk 660036, Russian Federation
Departmento de Fisica, C.U.C.E.I., Universidade de Guadalajara, Guadalajara, Jalisco 44430, Mexico

Доп.точки доступа:
Ivanova, N. B.; Иванова, Наталья Борисовна; Kazak, N. V.; Казак, Наталья Валерьевна; Michel, C. R.; Balaev, A. D.; Балаев, Александр Дмитриевич; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Vasil'ev, A. D.; Васильев, Александр Дмитриевич; Bulina, N. V.; Булина, Наталья Васильевна; Panchenko, E. B.
}
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5.


   
    Magnetic field effect and dielectric anomalies at the spin reorientation phase transition of GdFe3(BO3)(4) / F. . Yen [et al.] // Phys. Rev. B. - 2006. - Vol. 73, Is. 5. - Ст. 54435, DOI 10.1103/PhysRevB.73.054435. - Cited References: 21 . - ISSN 1098-0121
РУБ Physics, Condensed Matter
Рубрики:
IRON BORATE GDFE3(BO3)(4)
   HOMNO3

   ANISOTROPY

   PR

   SM

Аннотация: GdFe3(BO3)(4) exhibits a structural phase transition at 156 K, antiferromagnetic order of the Fe3+ moments at 36 K, followed by a spin reorientation phase transition at 9 K. The reorientation phase transition is studied through dielectric, magnetic, and heat capacity measurements under the application of external magnetic fields of up to 7 kOe. The dielectric constant indicates the existence of two distinct anomalies at T-SR=9 K that separate in temperature under external magnetic fields. The spin rotation phase transition is proven to be of the first-order nature through the magnetic analog of the Clausius-Clapeyron equation. Magnetodielectric effect of up to 1% is observed at 8 K and 7 kOe. The uniaxial magnetocaloric effect along the c axis is observed below the spin reorientation phase transition of 9 K.

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Держатели документа:
Univ Houston, Texas Ctr Superconduct, Houston, TX 77204 USA
Univ Houston, Dept Phys, Houston, TX 77204 USA
Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA
Hong Kong Univ Sci & Technol, Hong Kong, Hong Kong, Peoples R China
Russian Acad Sci, Siberian Div, Inst Phys, Krasnoyarsk 660036, Russia
Moscow MV Lomonosov State Univ, Fac Phys, Moscow 119992, Russia
ИФ СО РАН
Texas Center for Superconductivity of the University of Houston, Department of Physics, University of Houston, Houston, TX 77204-5002, United States
Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, United States
Hong Kong University of Science and Technology, Hong Kong, Hong Kong
Institute of Physics, Siberian Division, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation
Faculty of Physics, Moscow State University, Moscow, 119992, Russian Federation

Доп.точки доступа:
Yen, F.; Lorenz, B.; Sun, Y. Y.; Chu, C. W.; Bezmaternykh, L. N.; Безматерных, Леонард Николаевич; Vasiliev, A. N.
}
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6.


   
    Synthesis, crystal structure, and the optical and thermodynamic properties of PrAlGe2O7 / L. A. Irtyugo, L. T. Denisova, M. S. Molokeev [et al.] // Russ. J. Phys. Chem. A. - 2021. - Vol. 95, Is. 8. - P. 1546-1550, DOI 10.1134/S0036024421080124. - Cited References: 23 . - ISSN 0036-0244. - ISSN 1531-863X
РУБ Chemistry, Physical
Рубрики:
TEMPERATURE HEAT-CAPACITY
   GERMANATES

   SMFEGE2O7

   PR

Кл.слова (ненормированные):
PrAlGe2O7 -- complex oxide compounds -- solid-state synthesis -- crystal structure -- luminescence -- heat capacity -- thermodynamic properties
Аннотация: Germanate PrAlGe2O7 is obtained from initial oxides Pr2O3, Al2O3, and GeO2 via solid-phase synthesis. The crystal structure of the investigated germanate is determined via X-ray diffraction. The luminescence spectra are been determined at room temperature. The effect temperature has on the heat capacity is determined via differential scanning calorimetry. The thermodynamic properties of the complex oxide compound are calculated using the experimental data on Cp = f(T) in the temperature range of 350‒1000 K.

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Публикация на русском языке Синтез, кристаллическая структура, оптические и термодинамические свойства PrAlGe2O7 [Текст] / Л. А. Иртюго, Л. Т. Денисова, М. С. Молокеев [и др.] // Журн. физ. химии. - 2021. - Т. 95 № 8. - С. 1165-1170

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

Доп.точки доступа:
Irtyugo, L. A.; Denisova, L. T.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Denisov, V. M.; Aleksandrovsky, A. S.; Александровский, Александр Сергеевич; Beletskii, V. V.; Sivkova, E. Yu
}
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7.


   
    Synthesis, crystal structure, and physicochemical properties of Bi4-xPrxTi3O12 (x=0.4, 0.8, 1.2, 1.6) solid solutions / L. T. Denisova, M. S. Molokeev, Y. F. Kargin [et al.] // Inorg. Mater. - 2021. - Vol. 57, Is. 9. - P. 919-928, DOI 10.1134/S002016852109003X. - Cited References: 40 . - ISSN 0020-1685. - ISSN 1608-3172
РУБ Materials Science, Multidisciplinary
Рубрики:
BI4-XRXTI3O12 R-X
   HEAT-CAPACITY

   AURIVILLIUS PHASES

   PR

   ND

   BI4TI3O12

Кл.слова (ненормированные):
bismuth titanates -- solid-state synthesis -- crystal structure -- luminescence -- high-temperature heat capacity -- phase transition
Аннотация: Bi4–xPrxTi3O12 (x = 0.4, 0.8, 1.2, 1.6) solid solutions have been prepared by solid-state reactions, via multistep firing of stoichiometric mixtures of their constituent oxides in air at temperatures from 1003 to 1323 K. Their crystal structure has been determined using X-ray diffraction, and their luminescence spectra have been measured at room temperature. High-temperature heat capacity of polycrystalline substituted bismuth titanate samples has been determined by differential scanning calorimetry. The Cp(T) curves of the solid solutions with x = 0.4 and 0.8 have extrema related to phase transitions. Experimental data have been used to calculate the main thermodynamic functions of the solid solutions.

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Публикация на русском языке Синтез, кристаллическая структура и физико-химические свойства твердых растворов Bi4-xPrxTi3O12 (x = 0.4, 0.8, 1.2, 1.6) [Текст] / Л. Т. Денисова, М. С. Молокеев, Ю. Ф. Каргин [и др.] // Неорган. матер. - 2021. - Т. 57 № 9. - С. 968-977

Держатели документа:
Siberian Fed Univ, Krasnoyarsk 660041, Russia.
Russian Acad Sci, Fed Res Ctr, Siberian Branch, Kirensky Inst Phys,Krasnoyarsk Sci Ctr, Krasnoyarsk 660036, Russia.
Russian Acad Sci, Baikov Inst Met & Mat Sci, Moscow 119991, Russia.

Доп.точки доступа:
Denisova, L. T.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Kargin, Yu F.; Gerasimov, V. P.; Герасимов, Виктор Петрович; Krylov, A. S.; Крылов, Александр Сергеевич; Aleksandrovskii, A. S.; Александровский, Александр Сергеевич; Chumilina, L. G.; Denisov, V. M.; Vasil'ev, G. V.; Васильев Г. В.
}
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8.


   
    Synthesis, crystal structure, and thermal properties of substituted titanates Bi2Pr2Ti3O12 and Bi2Nd2Ti3O12 / L. T. Denisova, M. S. Molokeev, N. A. Galiakhmetova [et al.] // Phys. Solid State. - 2021. - Vol. 63. Is. 8. - P. 1159-1164, DOI 10.1134/S1063783421080084. - Cited References: 39. - This study was carried out in part within the state assignment for the Siberian Federal University, project no. FSRZ-2020-0013 . - ISSN 1063-7834. - ISSN 1090-6460
РУБ Physics, Condensed Matter
Рубрики:
BI4-XRXTI3O12 R-X
   PHASE-EQUILIBRIA

   HEAT-CAPACITY

   ND

   BI4TI3O12

   PR

Кл.слова (ненормированные):
substituted bismuth titanate -- solid-state synthesis -- crystal structure -- high-temperature heat capacity -- thermodynamic functions
Аннотация: Titanates Bi2Pr2Ti3O12 and Bi2Nd2Ti3O12 have been obtained by the solid-phase synthesis using sequential annealing of the Bi2O3, Nd2O3, Pr6O11, and TiO2 stoichiometric mixtures in air at temperatures of 1003–1323 K. Their crystal structure has been established by X-ray diffractometry and the high-temperature heat capacity has been determined by differential scanning calorimetry. Based on the experimental Cp = f(T) data, the main thermodynamic functions have been calculated.

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Публикация на русском языке Синтез, кристаллическая структура и теплофизические свойства замещенных титанатов Bi2Pr2Ti3O12 и Bi2Nd2Ti3O12 [Текст] / Л. Т. Денисова, М. С. Молокеев, Н. А. Галиахметова [и др.] // Физ. тверд. тела. - 2021. - Т. 63 Вып. 8. - С. 1056-1061

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

Доп.точки доступа:
Denisova, L. T.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Galiakhmetova, N. A.; Denisov, V. M.; Vasil'ev, G. V.; [FSRZ-2020-0013]
}
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9.


   
    Magnetic and transport properties of Gd(0.9)A(0.1)CoO(3-delta) (A = Ba, Sr) / N. V. Kazak [et al.] // J. Magn. Magn. Mater. - 2009. - Vol. 321, Is. 9. - P. 1266-1271, DOI 10.1016/j.jmmm.2008.11.087. - Cited Reference Count: 31. - Гранты: This study was supported by the Rosnauka (Project no. MK-4278.2008.2), Russian Foundation for Basic Research (Project no. 08-02-90708 mob_st) and "Strongly correlated electrons'' program of the Department of Physical Sciences of RAS. - Финансирующая организация: Rosnauka [MK-4278.2008.2]; Russian Foundation for Basic Research [08-02-90708 mob_st]; "Strongly correlated electrons'' program of the Department of Physical Sciences of RAS . - ISSN 0304-8853
Рубрики:
PEROVSKITE
   PR

   LA

   EU

   ND

   LN

   TRANSITION

   SPIN

   GD

   SM

Кл.слова (ненормированные):
Perovskite structure -- Doped cobaltite -- Magnetic susceptibility -- Metal-insulator transition -- Doped cobaltite -- Magnetic susceptibility -- Metal-insulator transition -- Perovskite structure -- Antiferromagnetism -- Barium -- Cobalt compounds -- Electric conductivity -- Ferromagnetic materials -- Ferromagnetism -- Gadolinium -- Magnetic susceptibility -- Metal insulator boundaries -- Oxide minerals -- Paramagnetic materials -- Perovskite -- Phase separation -- Semiconductor insulator boundaries -- Transport properties -- Antiferromagnetic -- Doped cobaltite -- Doped samples -- Electrical conductivity measurements -- Ferromagnetic transitions -- Insulator-metal transitions -- Magnetic and transport properties -- Magnetic behaviors -- Perovskite structure -- Temperature ranges -- Transport datum -- X- ray diffractions -- Metal insulator transition
Аннотация: The X-ray diffraction, magnetization and electrical conductivity measurements for Gd(0.9)A(0.1)CoO(3-delta) (A = Ba, Sr) have been made. The complicated magnetic behavior, including the paramagnetic-ferromagnetic-antiferromagnetic and paramagnetic-ferromagnetic transitions, was found for Ba- and Sr-doped samples. The gradual insulator-metal transitions were observed in a wide temperature range T = 600-800 K. The complex magnetic and transport data could be explained on the basis of the structural phase separation. (C) 2009 Elsevier B.V. All rights reserved.

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Держатели документа:
Russian Acad Sci, Kirensky Inst Phys, Siberian Branch, Krasnoyarsk 660036, Russia
Siberian Fed Univ, Polytech Inst, Krasnoyarsk 660074, Russia
Univ Guadalajara, CUCEI, Dept Fis, Guadalajara 44430, Jalisco, Mexico
Siberian Fed Univ, Inst Nat & Humanitary Res, Krasnoyarsk 660041, Russia
AA Galkin Donetsk Phystech Natl Acad Sci Ukraine, UA-83114 Donetsk, Ukraine

Доп.точки доступа:
Kazak, N. V.; Казак, Наталья Валерьевна; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Balaev, A. D.; Балаев, Александр Дмитриевич; Ivanova, N.B.; Pashkevich, Yu. G.; Michel, C.R.; Bondarenko, G. V.; Бондаренко, Геннадий Васильевич
}
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