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Bi2(Sn0.95Cr0.05)2O7: Structure, IR spectra, and dielectric properties / S. S. Aplesnin [et al.] // Ceram. Int. - 2016. - Vol. 42, Is. 4. - P. 5177-5183, DOI 10.1016/j.ceramint.2015.12.040. - Cited References: 45. - This work was supported by the Russian Foundation for Basic Research Projects no. 15-42-04099 r_siberia_a, Siberian Branch of Science and NAS of Belarus “Electronic and magnetic phase transitions in materials with magnetoelectric affect” and government work no. 114090470016. . - ISSN 0272-8842

РУБ Materials Science, Ceramics
Рубрики:
BISMUTH PYROSTANNATE
   PYROCHLORE STRUCTURE
   MAGNETIC-PROPERTIES
   PARTIAL OXIDATION
   HIGH-TEMPERATURE
   X-RAY
   Bi2Sn2O7
   SUBSTITUTION
   CATALYSTS
   DIFFRACTION
Кл.слова (ненормированные):
Bismuth pyrostannate -- Infrared absorption spectra -- Structural transition -- Permittivity -- Debye model
Аннотация: Infrared absorption spectra of the bismuth pyrostannate Bi2(Sn0.95Cr0.05)2O7 were investigated in the frequency range 350-1100 cm-1 at temperatures of 110-525 K. Four frequency regions with split absorption lines are distinguished. Softening of frequencies at the structural transitions was observed. The maxima of permittivity measured in the frequency range 1-200 kHz at temperatures 100-400 K were determined. It was found that the magnetic susceptibility changes its sign in the low-temperature region. The correlation between anomalies in the magnetic susceptibility, permittivity, and absorption line intensity was established. Softening of frequencies is explained by the variation in the coefficient of thermal expansion of the lattice. The temperature behavior of permittivity is described using the Debye model. © 2015 Elsevier Ltd and Techna Group S.r.l.

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Держатели документа:
Kirensky Institute of Physics, Russian Academy of Sciences, Siberian Branch, Akademgorodok 50, Krasnoyarsk, Russian Federation
Siberian State Aerospace University, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Aplesnin, S. S.; Аплеснин, Сергей Степанович; Udod, L. V.; Удод, Любовь Викторовна; Sitnikov, M. N.; Shestakov, N. P.; Шестаков, Николай Петрович
}
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Correlation of the magnetic and transport properties with polymorphic transitions in bismuth pyrostannate Bi2(Sn1 − xCr x)2O7 / S. S. Aplesnin [et al.] // Phys. Solid State. - 2015. - Vol. 57, Is. 8. - P. 1627-1632, DOI 10.1134/S1063783415080028. - Cited References: 17. - This study was supported by the Russian Foundation for Basic Research (project no. 15-02-01445-a) and the Ministry of Education and Science of the Russian Federation (state task no. 114090470016). . - ISSN 1063-7834

РУБ Physics, Condensed Matter
Рубрики:
GAS SENSORS
Bi2Sn2O7
CRYSTAL
Аннотация: The correlation of the electrical, magnetic, and structural properties of Bi2(Sn1 − xCrx)2O7 solid solutions has been investigated for two compositions with x = 0.05 and 0.1. The temperatures of structural phase transitions and anomalies of the electrical resistance in the vicinity of these transitions at temperatures in the range 300 K ˂ T ˂ 1000 K have been determined using differential scanning calorimetry. It has been found that the thermoelectric power changes sign upon the polymorphic transition. The paramagnetic Curie temperature and the chromium-ion spin have been found from the temperature dependence of the magnetic susceptibility in the range 4 K ˂ T ˂ 1000 K and from the field dependence of the magnetic moment in magnetic fields of up to 6 T.

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Публикация на русском языке Корреляция магнитных и транспортных свойств с полиморфными переходами в пиростаннате висмута Bi2(Sn1-xCrx)2O7 [Текст] / С. С. Аплеснин [и др.] // Физ. тверд. тела. - 2015. - Т. 57 Вып. 8. - С. 1590-1595

Держатели документа:
Kirensky Institute of Physics, Siberian Branch of the Russian Academy of Sciences, Akademgorodok 50-38, Krasnoyarsk, Russian Federation
Reshetnev Siberian State Aerospace University, pr. imeni Gazety “Krasnoyarskii Rabochii” 31, Krasnoyarsk, Russian Federation
Far Eastern State Transport University, ul. Serysheva 47, Khabarovsk, Russian Federation
Krasnoyarsk Scientific Center, Siberian Branch of the Russian Academy of Sciences, Akademgorodok 50, Krasnoyarsk, Russian Federation
Scientific-Practical Materials Research Centre, National Academy of Sciences of Belarus, ul. P. Brovki 19, Minsk, Belarus

Доп.точки доступа:
Аплеснин, Сергей Степанович; Aplesnin, S. S.; Udod, L. V.; Удод, Любовь Викторовна; Sitnikov, M. N.; Eremin, E. V.; Еремин, Евгений Владимирович; Molokeev, M. S.; Молокеев, Максим Сергеевич; Tarasova, L. S.; Yanushkevich, K. I.; Galyas, A. I.; Russian Foundation for Basic Research [15-02-01445-a]; Ministry of Education and Science of the Russian Federation [114090470016]
}
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Dielectric and electrical properties of polymorphic bismuth pyrostannate Bi2Sn2O7 / L. V. Udod [et al.] // Phys. Solid State. - 2014. - Vol. 56, Is. 7. - P. 1315-1319, DOI 10.1134/S1063783414070336. - Cited References: 20. - This study was supported by the Russian Foundation for Basic Research (project nos. 09-02-00125-a, 14-02-92003 NNS_a, 14-02-90010_Bel_a, and 14-12-00124). . - ISSN 1063-7834. - ISSN 1090-6460

РУБ Physics, Condensed Matter
Рубрики:
STRONG MAGNETIC-FIELD
   DOPED MANGANITES
   MAGNETORESISTANCE
   Bi2O3
Аннотация: The Bi2Sn2O7 compound existing simultaneously in two polymorphic modifications, namely, orthorhombic and cubic, has been synthesized for the first time by solid-phase synthesis. The dielectric and electrical properties of the compound have been studied in the temperature range 100 K ˂ T ˂ 500 K. Anomalies in the temperature dependences of the electrical resistivity and the permittivity (imaginary and real parts) have been found at both low and high temperatures. These features are explained in terms of the model of martensitic phase transitions.

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Публикация на русском языке Диэлектрические и электрические свойства полиморфного пиростаната висмута Bi2Sn2O7 [Текст] / Л. В. Удод [и др.] // Физ. тверд. тела : ФТИ РАН, 2014. - Т. 56 Вып. 7. - С. 1267-1271

Держатели документа:
Reshetnev Siberian State Aerosp Univ, Krasnoyarsk 660014, Russia
Russian Acad Sci, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Udod, L. V.; Удод, Любовь Викторовна; Aplesnin, S. S.; Аплеснин, Сергей Степанович; Sitnikov, M. N.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Russian Foundation for Basic Research [09-02-00125-a, 14-02-92003 NNS_a, 14-02-90010_Bel_a, 14-12-00124]
}
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Dielectric and transport properties, electric polarization at the sequential structural phase transitions in iron-substituted bismuth pyrostannate / S. S. Aplesnin, L. V. Udod, M. N. Sitnikov, O. B. Romanova // Ceram. Int. - 2021. - Vol. 47, Is. 2. - P. 1704-1711, DOI 10.1016/j.ceramint.2020.08.287. - Cited References: 33. - The reported study was funded by Russian Foundation for Basic Research project № 20-52-00005 Bel_a . - ISSN 0272-8842
Кл.слова (ненормированные):
Dielectric properties -- Impedance -- Electrical conductivity -- Electric polarization -- Thermopower
Аннотация: The electrical characteristics including the electrical resistance, impedance, I–V characteristics, capacitance, dissipation factor, and thermoelectric power of the Bi2Sn2-хFeхO7 (х = 0.1, 0.2) stannates have been investigated in the temperature range of 100–600 K at frequencies of 102–106 Hz. The paramagnetic contribution of electrons to the dynamic magnetic susceptibility has been established. The conductivity mechanism of the compounds has been found from the I–V characteristics and the change in the carrier sign has been determined from the thermoelectric power. The hysteresis of the I–V curves, charge transfer currents and polarization current have been observed in the Bi2Sn1·8Fe0·2O7 compound. A nonlinear field dependence of the polarization in the orthorhombic phase has been found. The correlation between the obtained characteristics and the phase structure transitions has been established. Two relaxation channels and activation energy have been found using the Debye model. The hysteretic I–V characteristics have been explained using a model of the electronic structure and the dipole and migration polarization.

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Akademgorodok, 50, Krasnoyarsk, 660036, Russian Federation
Reshetnev Siberian State University of Science and Technology, Krasnoyarsk, 660037, Russian Federation

Доп.точки доступа:
Aplesnin, S. S.; Аплеснин, Сергей Степанович; Udod, L. V.; Удод, Любовь Викторовна; Sitnikov, M. N.; Romanova, O. B.; Романова, Оксана Борисовна
}
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Dipole glass in chromium-substituted bismuth pyrostannate / S. S. Aplesnin [et al.] // Mater. Res. Express. - 2018. - Vol. 5, Is. 11. - Ст. 115202, DOI 10.1088/2053-1591/aaddd9. - Cited References: 33. - This study was supported by the Russian Foundation for Basic Research project N 18-52-00009 Bel_a, No 18-32-00079 mol_a, the state order No 3.5743.2017/6.7. . - ISSN 2053-1591

РУБ Materials Science, Multidisciplinary
Рубрики:
BI4TI3O12 THIN-FILMS
   NEUTRON-DIFFRACTION
   RAMAN-SPECTROSCOPY
   BI2SN2O7
Кл.слова (ненормированные):
dipole glass -- permittivity -- polarization -- Raman scattering spectra -- structural transition
Аннотация: To establish the existence of dipole glass in the chromium-substituted bismuth pyrostannate solid solutions, the frequency and temperature dependences of the permittivity have been measured in the temperature range of 300–750 K. The field and dynamic dependences of polarization in the temperature range of 80–550 K have been determined. Using the Raman scattering spectra, the absence of inversion center has been established. The maximum of electrical resistance has been found in the vicinity of the dipole moment freezing point. The carrier type has been determined from the thermopower data. The polarization relaxation is shown to be nonexponential. The experimental data are explained within the model of dipole glass in the α- phase and the model of charged crystalline domain walls with the electron-polarization relaxation mechanism above the α–β structural transition.

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Держатели документа:
SB RAS, Kirensky Inst Phys, Fed Res Ctr KSC, Krasnoyarsk 660036, Russia.
Reshetnev Siberian State Univ Sci & Technol, Krasnoyarsk 660037, Russia.
Siberian Fed Univ, Krasnoyarsk 660041, Russia.
Inst Solid State Phys, LV-1063 Riga, Latvia.

Доп.точки доступа:
Aplesnin, S. S.; Аплеснин, Сергей Степанович; Udod, L. V.; Удод, Любовь Викторовна; Sitnikov, M. N.; Kretinin, V. V.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Mironova-Ulmane, N.; Russian Foundation for Basic Research [N 18-52-00009 Bel_a, 18-32-00079 mol_a, 3.5743.2017/6.7]
}
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Romanova, O. B.
Effect of electron and hole doping on the transport characteristics of chalcogenide systems / O. B. Romanova, S. S. Aplesnin, L. V. Udod // Phys. Solid State. - 2021. - Vol. 63, Is. 5. - P. 754-757, DOI 10.1134/S1063783421050152. - Cited References: 21. - This study was supported by the Russian Foundation for Basic Research and the Belarusian Republican Foundation for Basic Research, project no. 20-52-00005 . - ISSN 1063-7834. - ISSN 1090-6460

РУБ Physics, Condensed Matter
Рубрики:
MAGNETIC-PROPERTIES
TRANSITION
Кл.слова (ненормированные):
semiconductors -- conductivity -- Hall constant -- mobility
Аннотация: The electrical properties of the Ag0.01Mn0.99S and Tm0.01Mn0.99S semiconductor compounds and the Hall effect in them have been investigated in the temperature range of 80-400 K in a magnetic field of 12 kOe. Using the I-V characteristics, the conductivity mechanism depending on the doping type and concentration has been established. Upon substitution of silver for manganese, the Mott-type conductivity has been found, while substitution of thulium causes the ohmic conductivity. The mobility and type of carriers have been determined from the Hall constant data.

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Публикация на русском языке Романова, Оксана Борисовна. Влияние электронного и дырочного допирования на транспортные характеристики халькогенидных систем [Текст] / О. Б. Романова, С. С. Аплеснин, Л. В. Удод // Физ. тверд. тела. - 2021. - Т. 63 Вып. 5. - С. 606-609

Держатели документа:
Russian Acad Sci, Krasnoyarsk Sci Ctr, Kirensky Inst Phys, Siberian Branch, Krasnoyarsk 660036, Russia.
Siberian State Univ Sci & Technol, Krasnoyarsk 660014, Russia.

Доп.точки доступа:
Aplesnin, S. S.; Аплеснин, Сергей Степанович; Udod, L. V.; Удод, Любовь Викторовна; Романова, Оксана Борисовна; Russian Foundation for Basic ResearchRussian Foundation for Basic Research (RFBR); Belarusian Republican Foundation for Basic Research [20-52-00005]
}
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Effect of Mn doping on magnetic and dielectric properties of Bi2Sn2O7 [Текст] / L. V. Udod [et al.] // Moscow Int. Symp. on Magnet. (MISM-2014) : Book of abstracts. - 2014. - Ст. 1PO-J1-6. - P. 513 . - ISBN 978-5-91978-025-0

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Доп.точки доступа:
Udod, L. V.; Удод, Любовь Викторовна; Aplesnin, S. S.; Аплеснин, Сергей Степанович; Eremin, E. V.; Еремин, Евгений Владимирович; Sitnikov, M. N.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Moscow International Symposium on Magnetism(6 ; 2014 ; June-July ; Moscow)
}
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Effect of Mn doping on magnetic and dielectric properties of Bi2Sn2O7 / L. V. Udod [et al.] // Solid State Phenom. : Selected, peer reviewed papers. - 2015. - Vol. 233-234: Achievements in Magnetism. - P. 105-108, DOI 10.4028/www.scientific.net/SSP.233-234.105 . - ISSN 1662-9779. - ISSN 978-3-038
Рубрики:
Achievements in magnetism
Кл.слова (ненормированные):
crystallographic structure -- cubic phase -- dielectric permeability -- electrical resistivity -- magnetic moment -- martensitic phase transitions -- orthorhombic phases -- polymorphic transformation
Аннотация: The Bi2(Sn0.95Mn0.05)2O7 compound existing simultaneously in two polymorphic modifications, namely, orthorhombic and cubic has been synthesized for the first time by solid-phase synthesis. The magnetic, dielectric and electrical properties of the compound have been studied. Anomalies in the temperature dependences of the electrical resistance and magnetic propoties have been found. These features are explained as martensitic phase transitions.

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Доп.точки доступа:
Perov, N. \ed.\; Semisalova, A. \ed.\; Udod, L. V.; Удод, Любовь Викторовна; Aplesnin, S. S.; Аплеснин, Сергей Степанович; Sitnikov, M. N.; Eremin, E. V.; Еремин, Евгений Владимирович; Molokeev, M. S.; Молокеев, Максим Сергеевич; Moscow International Symposium on Magnetism(6 ; 2014 ; June-July ; Moscow)
}
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Effect of Ni-substitution on magnetic phase transition in CuB 2O4 / G. A. Petrakovskii [et al.] // Journal of Magnetism and Magnetic Materials. - 2006. - Т. 300, № 1. - P. e476-e478, DOI 10.1016/j.jmmm.2005.10.198. - Библиогр.: 10. - Грант РФФИ 03-02-16701 . - ISSN 0304-8853

ГРНТИ

45.09

Аннотация: The single crystals Cu1 xNixB2O4 with x ¼ 0:002; 0.005; 0.009; 0.014 were grown by spontaneous crystallization and the magnetic properties of these crystals have been studied. The strong influence of substitution on the value of critical fields H?c at which the modulated states transform into a weak ferromagnetic one was observed in the temperature range 9.5–20 K. The essential change of temperature dependence of a paramagnetic susceptibility w for Ni-doped samples in comparison with pure CuB2O4 was revealed. The modulated state was not observed in the temperature range 9.5–20 K for Ni content more than x ¼ 0:009.

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Держатели документа:
Institute of Physics,Polish Academy of Sciences
L.V. Kirensky Institute of Physics,SB,RAS

Доп.точки доступа:
Petrakovskii, G. A.; Петраковский Герман Антонович; Sablina, K. A.; Саблина Клара Александровна; Udod, L. V.; Удод Любовь Викторовна; Pankrats, A. I.; Панкрац Анатолий Иванович; Velikanov, D. A.; Великанов Дмитрий Анатольевич; Bondarenko, G. V.; Бондаренко Геннадий Васильевич; Szymczak, R. ; Baran, M.
}
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10.

Effect of substitution on magnetic properties of CuB2O4 / Sablina K.A., Udod L.V., Pankrats A.I., Velikanov D.A., Vasilev A.D., A.F. Bovina, Bondarenko G.V. // Moscow International Symposium on Magnetism, Moscow, 2008, p.687

Доп.точки доступа:
Sablina, K. A.; Саблина, Клара Александровна; Udod, L. V.; Удод, Любовь Викторовна; Pankrats, A. I.; Панкрац, Анатолий Иванович; Velikanov, D. A.; Великанов, Дмитрий Анатольевич; Vasiliev, A. D.; Васильев, Александр Дмитриевич; Bovina, A. F.; Бовина, Ася Федоровна; Bondarenko, G. V.; Бондаренко, Геннадий Васильевич
}
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