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1.
Synthesis, crystal structure,
luminescence, and
thermophysical
properties of TbGaGe2O7 / L. T. Denisova, M. S. Molokeev, A. S. Krylov [et al.]> // Phys. Solid State. - 2021. -
Vol. 63
,
Is. 1
. - P. 75-78,
DOI
10.1134/S106378342101008X. - Cited References: 11. - We are grateful to the Krasnoyarsk Regional Center for Collective Use, Krasnoyarsk Scientific Center, Siberian Branch of the Russian Academy of Sciences . - ISSN 1063-7834
Кл.слова (ненормированные):
terbium gallogermanate
--
solid-state synthesis
--
crystal structure
--
luminescence
--
high-temperature specific heat
--
thermodynamic properties
Аннотация:
Germanate TbGaGe2O7 has been obtained from the initial Tb2O3, Ga2O3, and GeO2 oxides by the solid-phase synthesis. The germanate structure has been established by X-ray diffraction. Room-temperature luminescence spectra of the compound have been recorded. The effect of temperature on the heat capacity of the oxide compound has been investigated by differential scanning calorimetry. The thermodynamic properties of the compound have been calculated from the experimental Cp = f(T) data.
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Синтез, кристаллическая структура, люминесценция и теплофизические свойства TbGaGe2O7 [Текст] / Л. Т. Денисова, М. С. Молокеев, А. С. Крылов [и др.] // Физ. тверд. тела. - 2021. - Т. 63 Вып. 1. - С. 76-79
Держатели документа:
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
Kirensky Institute of Physics, Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation
Доп.точки доступа:
Denisova, L. T.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Krylov, A. S.; Крылов, Александр Сергеевич; Aleksandrovsky, A. S.; Александровский, Александр Сергеевич; Irtyugo, L. A.; Beletskii, V. V.; Denisov, V. M.
}
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2.
Thermophysical
properties of
lithium thiogallate that are important for optical applications / A. Kurus, A. Yelisseyev, S. Lobanov [et al.]> // RSC Adv. - 2021. -
Vol. 11
,
Is. 62
. - P. 39177-39187,
DOI
10.1039/d1ra05698k. - Cited References: 41. - Crystal growth and investigation of physical properties were supported by Russian Science Foundation, Russia (#19-12-00085). Spectroscopic study was performed on a state assignment of the Institute of Geology and Mineralogy, Siberian Branch of Russian Academy of Sciences Russia and Ministry of Science and Higher Education, Russia. Measurements of thermal conductivity were funded by RFBR and Novosibirsk region (grant #20-42-543006\20) . - ISSN 2046-2069
Перевод заглавия:
Теплофизические свойства тиогаллата лития, важные для оптических приложений
РУБ
Chemistry, Multidisciplinary
Рубрики:
NON-ENANTIOMORPHOUS CRYSTAL
MID-IR
SINGLE-CRYSTALS
FLASH METHOD
Аннотация:
Lithium thiogallate LiGaS2 is one of the most common nonlinear crystals for mid-IR due to its extreme beam strength and wide transparency range; however, its
thermophysical
properties have not yet been practically studied. Large crystals of high optical quality are grown. DTA revealed features at 1224 K below melting point (1304 K) that are associated with the oxygen containing compounds of the LiGaO2−xSx type. The thermal conductivity of LiGaS2 (about 10.05 W (m−1 K−1)) and band gap value (3.93 eV at 300 K) are found to be the highest in the LiBC2 family. Isotropic points in the dispersion characteristics for the refractive index are found and LiGaS2-based narrow-band optical filters, smoothly tunable with temperature changes, are demonstrated. Intense blue photoluminescence of anionic vacancies VS is observed at room temperature after annealing LiGaS2 in vacuum, whereas orange low-temperature emission is related to self-trapped excitons. When LiGaS2 crystals are heated, spontaneous luminescence (pyroluminescence) takes place, or thermoluminescence after preliminary UV excitation; the parameters of traps of charge carriers are estimated. The obtained data confirm the high optical stability of this material and open up prospects for the creation of new optical devices based on LiGaS2.
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Держатели документа:
Novosibirsk State Univ, 2 Pirogov Str, Novosibirsk 630090, Russia.
SB RAS, Sobolev Inst Geol & Mineral, 3 Kopyug Ave, Novosibirsk 630090, Russia.
SB RAS, Nikolaev Inst Inorgan Chem, 3 Lavrentyev Ave, Novosibirsk 630090, Russia.
SB RAS, Kirensky Inst Phys, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Krasnoyarsk 660041, Russia.
SB RAS, Inst Chem & Chem Technol, 42 K Marx Str, Krasnoyarsk 66049, Russia.
SB RAS, Kutateladze Inst Thermophys, 1 Lavrentyev Ave, Novosibirsk 630090, Russia.
Доп.точки доступа:
Kurus, Alexey; Yelisseyev, Alexander; Lobanov, Sergei; Plyusnin, Pavel; Molokeev, M. S.; Молокеев, Максим Сергеевич; Solovyev, Leonid; Samoshkin, Dmitry; Stankus, Sergei; Melnikova, S. V.; Мельникова, Светлана Владимировна; Isaenko, Lyudmila; Russian Science Foundation, RussiaRussian Science Foundation (RSF) [19-12-00085]; RFBRRussian Foundation for Basic Research (RFBR) [20-42-543006\20]; Novosibirsk region [20-42-543006\20]
}
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3.
Synthesis, structure, and
thermophysical
properties of EuGaGe2O7 / L. T. Denisova, M. S. Molokeev, L. A. Irtyugo [et al.]> // Inorg. Mater. - 2020. -
Vol. 56
,
Is. 8
. - P. 854-858,
DOI
10.1134/S002016852008004X. - Cited References: 18 . - ISSN 0020-1685. - ISSN 1608-3172
РУБ
Materials Science, Multidisciplinary
Рубрики:
TEMPERATURE HEAT-CAPACITY
THERMODYNAMIC PROPERTIES
CRYSTAL-STRUCTURE
Кл.слова (ненормированные):
europium gallium germanate
--
solid-state synthesis
--
differential scanning calorimetry
--
heat capacity
--
structure
--
thermodynamic properties
Аннотация:
The europium gallium germanate EuGaGe2O7 has been prepared by solid-state reaction in air in the temperature range 1273–1473 K using a stoichiometric mixture of Eu2O3, Ga2O3, and GeO2. Its crystal structure has been determined by X-ray diffraction (sp. gr. P21/c, a = 7.1693(7) Å, b = 6.57008(6) Å, c = 12.7699(1) Å, β = 117.4522(5)°, V = 533.768(8) Å3). The heat capacity of polycrystalline samples has been determined by differential scanning calorimetry in the temperature range 350–1053 K and the experimental data have been used to calculate the thermodynamic properties (enthalpy increment, entropy change, and reduced Gibbs energy change) of EuGaGe2O7.
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Синтез, структура и теплофизические свойства EuGaGe2O7 [Текст] / Л. Т. Денисова, М. С. Молокеев, Л. А. Иртюго [и др.] // Неорган. матер. - 2020. - Т. 56 № 8. - С. 901-905
Держатели документа:
Siberian Fed Univ, Inst Nonferrous Met & Mat Sci, Svobodnyi Pr 79, Krasnoyarsk 660041, Russia.
Russian Acad Sci, Siberian Branch, Fed Res Ctr, Kirensky Inst Phys,Krasnoyarsk Sci Ctr, Akademgorodok 50-38, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Inst Engn Phys & Radio Elect, Ul Akad Kirenskogo 28-12 B, Krasnoyarsk 660041, Russia.
Russian Acad Sci, Baikov Inst Met & Mat Sci, Leninskii Pr 49, Moscow 119991, Russia.
Доп.точки доступа:
Denisova, L. T.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Irtyugo, L. A.; Beletskii, V. V.; Kargin, Yu. F.; Denisov, V. M.
}
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4.
Synthesis, Structure, and
Thermophysical
Properties of Pb10 – xBix(GeO4)2 + xVO4)4 – x (x = 0–3) in the Temperature Range of 350–950 K / L. T. Denisova, M. S. Molokeev, V. M. Denisov [et al.]> // Phys. Solid State. - 2020. -
Vol. 62
,
Is. 11
. - P. 2045-2051,
DOI
10.1134/S1063783420110116. - Cited References: 26. - The study was carried out under the state assignment for science for the Siberian Federal University, project no. FSRZ-2020-0013 . - ISSN 1063-7834
Кл.слова (ненормированные):
bismuth-doped lead vanadate germanates
--
apatites
--
structure
--
high-temperature specific heat
--
thermodynamic properties
Аннотация:
The Pb10 – xBix(GeO4)2 + x(VO4)4 – x (x = 0–3) compounds with an apatite structure have been obtained for the first time from the initial PbO, Bi2O3, GeO2, and V2O5 oxides by the solid-state synthesis in the temperature range of 773–1073 K. The structure of the compounds has been determined by X-ray diffraction analysis. The effect of temperature on specific heat of the synthesized compounds has been investigated by differential scanning calorimetry. The thermodynamic properties of the compounds have been calculated from the experimental Cp = f(T) data.
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Синтез, структура и теплофизические свойства апатитов Pb10-xBix(GeO4)2+xVO4)4-x (x=0-3) в области 350-950 K [Текст] / Л. Т. Денисова, М. С. Молокеев, В. М. Денисов [и др.] // Физ. тверд. тела. - 2020. - Т. 62 Вып. 11. - С. 1828-1833
Держатели документа:
Siberian Federal University, Institute of Metallurgy and Materials Science, Krasnoyarsk, 660041, Russian Federation
Siberian Federal University, Institute of Engineering Physics and Radio Electronics, Krasnoyarsk, 660041, Russian Federation
Kirensky Institute of Physics, Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation
Доп.точки доступа:
Denisova, L. T.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Denisov, V. M.; Golubeva, E. O.; Galiakhmetova, N. A.
}
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5.
Orlik, E.
Numerical simulation of non-Newtonian hydrodynamics in an annular channel with tool joint / E. Orlik, O. Bocharov, A. Gavrilov> // Journal of Physics Conference Series. - 2020. -
Vol. 1677
: 36th Siberian
Thermophysical
Seminar (STS) (Oct. 05-07, 2020, RAS, SB, Kutateladze Inst. Thermophys., Novosibirsk, Russia). - Ст. 012194,
DOI
10.1088/1742-6596/1677/1/012194. - Cited References: 8. - The authors would like to thank Baker Hughes for the permission to publish the results of modelling and are grateful for the financial support of the RFBR and the government of Krasnoyarsk region according to the research project.18-41-242006
Аннотация:
The paper presents the simulations of the local and integral characteristics of an annular flow with tool joints, depending on problem parameters. The structure of the flow in the vicinity of the coupling, in the areas of stagnant and reverse flow, is studied in detail. The characteristic length of separation and stabilization zones, i.e. the distance behind the joint where the flow reaches steady-state again is investigated. The sizes of pipes and tool joints in the study match those used while drilling. The numerical modelling is performed in 3D steady-state formulation for both laminar and turbulent regimes using original in-house software.
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Держатели документа:
Baker Hughes Russia, 4a Kutateladze Str, Novosibirsk 630090, Russia.
SB RAS, Inst Phys, 50-44 Akademgorodok, Krasnoyarsk 660036, Russia.
Доп.точки доступа:
Bocharov, O.; Gavrilov, A.; Гаврилов, А.; RFBRRussian Foundation for Basic Research (RFBR); government of Krasnoyarsk region [18-41-242006]; Siberian
Thermophysical
Seminar(36th ; Oct. 05-07, 2020 ; Novosibirsk, RUSSIA)
}
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6.
X-Ray, Dielectric, and
Thermophysical
Studies of Rubidium Tetrachlorozincate inside Porous Glasses / L. N. Korotkov [et al.]> // Bull. Russ. Acad. Sci. Phys. - 2019. -
Vol. 83
,
Is. 9
. - P. 1072-1076,
DOI
10.3103/S1062873819090132. - Cited References: 17 . - ISSN 1062-8738
Кл.слова (ненормированные):
Borosilicate glass
--
Chlorine compounds
--
Ferroelectric materials
--
Glass ceramics
--
Rubidium
--
Thermal expansion
--
Zinc compounds
Аннотация:
Results are presented from studying the X-ray diffraction, heat capacities, dielectric permittivities, and coefficients of the volumetric thermal expansion of composite materials obtained by embedding of Rb2ZnCl4 salt into the porous matrices of borosilicate glass with average pore diameters of 46 and 320 nm in the temperature range of 120–350 K. The temperatures of transitions to the incommensurate and ferroelectric phases are determined, along with the freezing temperature of the mobility of domain boundaries in Rb2ZnCl4 particles. A substantial increase in their Curie temperature is observed.
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Держатели документа:
Voronezh State Technical University, Voronezh, 394000, Russian Federation
Kirensky Institute of Physics, Krasnoyarsk, 660036, Russian Federation
Wroclaw University of Science and Technology, Wroclaw, 50-370, Poland
Institute of Engineering Physics and Radio Electronics, Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
Military Training and Scientific Center, Zhukovsky and Gagarin Air Force Academy, Voronezh, 394064, Russian Federation
Доп.точки доступа:
Korotkov, L. N.; Stekleneva, L. S.; Flerov, I. N.; Флёров, Игорь Николаевич; Mikhaleva, E. A.; Михалева, Екатерина Андреевна; Rysiakiewicz-Pasek, E.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Bondarev, I. A.; Бондарев, Илья Александрович; Gorev, M. V.; Горев, Михаил Васильевич; Sysoev, O. I.
}
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7.
Thermophysical
study of
structural phase transitions in Na0.95Li0.05NbO3 solid solution / M. V. Gorev [et al.]> // Bull. Russ. Acad. Sci. Phys. - 2016. -
Vol. 80
,
Is. 9
. - P. 1046-1050,
DOI
10.3103/S1062873816090148. - Cited References: 18. - This work was supported by Southern Federal University, project no. 213.01-2014/012-VG. . - ISSN 1062-8738
Кл.слова (ненормированные):
Niobium oxide
--
Sodium
--
Specific heat
--
Temperature distribution
--
Thermal expansion
--
Ceramic samples
--
Effect of heat treatments
--
Possible mechanisms
--
Sodium lithium niobate
--
Structural distortions
--
Structural phase transition
--
Temperature dependence
--
Temperature range
--
Lithium
Аннотация:
Temperature dependences of specific heat Cp(T) and coefficient of thermal expansion α(T) for Na0.95Li0.05NbO3 sodium-lithium niobate ceramic samples are investigated in the temperature range of 100–800 K. The Cp(T) and α(T) anomalies at T3 = 310 ± 3 K, T2 = 630 ± 8 K, and T1 = 710 ± 10 K are observed, which correspond to the sequence of phase transitions N ↔ Q ↔ S(R) ↔ T2(S). The effect of heat treatment of the samples on the sequence of structural distortions was established. It is demonstrated that annealing of the samples at 603 K leads to splitting of the anomaly corresponding to the phase transition Q → R/S in two anomalies. After sample heating to 800 K, the only anomaly is observed in both the Cp(T) and α(T) dependence. Possible mechanisms of the observed phenomena are discussed.
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Публикация на русском языке
Теплофизические исследования структурных фазовых переходов в твердом растворе Na0.95Li0.05NbO3 [Текст] / М. В. Горев [и др.] // Изв. РАН. Сер. физич. - 2016. - Т. 80 № 9. - С. 1145-1149
Держатели документа:
Kirensky Institute of Physics, Russian Academy of Sciences, Siberian Branch, Krasnoyarsk, Russian Federation
Siberian Federal University, Krasnoyarsk, Russian Federation
Southern Federal University, Rostov-on-Don, Russian Federation
Доп.точки доступа:
Gorev, M. V.; Горев, Михаил Васильевич; Bondarev, V. S.; Бондарев, Виталий Сергеевич; Raevskaya, S. I.; Flerov, I. N.; Флёров, Игорь Николаевич; Malitskaya, M. A.; Raevskii, I. P.
}
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8.
Structural, spectroscopic, and
thermophysical
investigations of the oxyfluorides CsZnMoO3F3 and CsMnMoO3F3 with the pyrochlore structure / Y. V. Gerasimova [et al.]> // Phys. Solid State. - 2014. -
Vol. 56
,
Is. 3
. - P. 599-605,
DOI
10.1134/S1063783414030135. - Cited References: 26. - This study was supported by the Russian Foundation for Basic Research (project no. 12-02-31205_mol_a), the Ministry of Education and Science of the Russian Federation within the framework of the Federal Target Program "Scientific and Scientific-Pedagogical Human Resources for the Innovative Russia" (agreement no. 8379), and the Siberian Branch of the Russian Academy of Sciences (Interdisciplinary Integration Project no. 28). . - ISSN 1063-7834. - ISSN 1090-6460
РУБ
Physics, Condensed Matter
Рубрики:
PHASE-TRANSITIONS
CRYSTAL-STRUCTURE
STATE
Cs
Mo
Аннотация:
The structure, infrared and Raman spectra, heat capacity, and thermal expansion have been investigated. It has been shown that, down to liquid-helium temperatures, the cubic pyrochlore structure of the CsMnMoO3F3 and CsZnMoO3F3 oxyfluorides remains stable. The influence of cation substitution on individual features of the properties of the oxyfluorides has been analyzed.
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Структурные, спектроскопические и теплофизические исследования оксифторидов CsZnMoO3F3 и CsMnMoO3F3 со структурой пирохлора [Текст] / Ю. В. Герасимова [и др.] // Физ. тверд. тела : ФТИ РАН, 2014. - Т. 56 Вып. 3. - С. 577-582
Держатели документа:
Russian Acad Sci, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia
Russian Acad Sci, Sobolev Inst Geol & Mineral, Siberian Branch, Novosibirsk 630090, Russia
Siberian Fed Univ, Inst Engn Phys & Radio Elect, Krasnoyarsk 660074, Russia
Доп.точки доступа:
Gerasimova, Y. V.; Герасимова, Юлия Валентиновна; Oreshonkov, A. S.; Орешонков, Александр Сергеевич; Ivanenko, A. A.; Иваненко, Александр Анатольевич; Molokeev, M. S.; Молокеев, Максим Сергеевич; Isaenko, L. I.; Flerov, I. N.; Флёров, Игорь Николаевич; Bogdanov, E. V.; Богданов, Евгений Витальевич; Gorev, M. V.; Горев, Михаил Васильевич; Kartashev, A. V.; Карташев, Андрей Васильевич; Krylov, A. S.; Крылов, Александр Сергеевич; Russian Foundation for Basic Research [12-02-31205_mol_a]; Ministry of Education and Science of the Russian Federation [8379]; Siberian Branch of the Russian Academy of Sciences [28]
}
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9.
Magnetic and
thermophysical
properties of GdxMn1-xS solid solutions / S. S. Aplesnin [et al.]> // J. Phys.: Condens. Matter. - 2013. -
Vol. 25
,
Is. 2
. - Ст. 025802. - P. ,
DOI
10.1088/0953-8984/25/2/025802 . - ISSN 0953-8984
Кл.слова (ненормированные):
Antiferromagnetic orders
--
Band state
--
Face-centered cubic lattices
--
Magnetic phase transitions
--
Paramagnetic phase
--
Temperature dependence
--
Antiferromagnetism
--
Electron transitions
--
Gadolinium
--
Manganese
--
Paramagnetism
--
Sodium chloride
--
Specific heat
--
Organic polymers
Аннотация:
The structural, magnetic, and
thermophysical
properties of cation-substituted sulfides GdXMn1-XS (0.04 ? X ? 0.25) with the NaCl-type face-centered cubic lattice have been investigated. The range of existence of long-range antiferromagnetic order has been established. The anomalies observed in the temperature dependence of the specific heat correspond to the temperatures of the magnetic phase transition. The anomaly in the specific heat caused by electron transitions between the 4f levels and d band states has been observed. It has been found that the coefficient of thermal expansion decreases with increasing concentration of substituents in the magnetically ordered region and remains nearly invariable in the paramagnetic phase. В© 2013 IOP Publishing Ltd.
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Держатели документа:
Russian Acad Sci, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia
Siberian State Aerosp Univ, Krasnoyarsk 660014, Russia
Siberian Fed Univ, Krasnoyarsk 660041, Russia
Daghestan Sci Ctr, Amirkhanov Inst Phys, Makhachkala 367003, Russia
Доп.точки доступа:
Aplesnin, S. S.; Аплеснин, Сергей Степанович; Romanova, O.; Романова, Оксана Борисовна; Gorev, M. V.; Горев, Михаил Васильевич; Velikanov, D. A.; Великанов, Дмитрий Анатольевич; Gamzatov, A. G.; Aliev, A. M.
}
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10.
Magnetic-resonance and
thermophysical
studies of the magnetic phase diagram for a GdFe2.1Ga0.9(BO3)(4) single crystal / A. I. Pankrats [et al.]> // J. Exp. Theor. Phys. - 2011. -
Vol. 113
,
Is. 3
. - P. 483-489,
DOI
10.1134/S1063776111070089. - Cited References: 21. - This work was supported by the Russian Foundation for Basic Research (project no. 10-02-00765a). . - ISSN 1063-7761
РУБ
Physics, Multidisciplinary
Рубрики:
IRON BORATE GDFE3(BO3)(4)
ND3+
Кл.слова (ненормированные):
Anisotropy field
--
Antiferromagnetic resonance
--
Critical fields
--
Entire domain
--
Field dependence
--
Iron ions
--
Magnetic phase diagrams
--
Resonance measurement
--
Thermophysical
--
Antiferromagnetism
--
Magnetic fields
--
Magnetic properties
--
Magnetic resonance
--
Metal ions
--
Phase diagrams
--
Single crystals
--
Antiferromagnetic materials
Аннотация:
The antiferromagnetic resonance, heat capacity, magnetic properties, and magnetic phase diagram of a GdFe3(BO3)(4) crystal in which some of the iron ions were substituted by diamagnetic gallium ions have been investigated. It has been found that the Ne,l temperature upon diamagnetic substitution decreased to 17 K compared to 38 K in the unsubstituted crystal. The effective exchange and anisotropy fields for GdFe2.1Ga0.9(BO3)(4) have been estimated from the field dependences of magnetization and resonance measurements. The magnetic phase diagram of the crystal has been constructed from magnetic and resonance measurements. In GdFe2.1Ga0.9(BO3)(4), there is no spontaneous reorientation and, in the absence of a magnetic field, the crystal remains an easy-axis one in the entire domain of magnetic ordering. The critical field of the reorientation transition to an induced easy-plane state in a magnetic field along the trigonal axis has been found to increase compared to that in the unsubstituted crystal.
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Держатели документа:
[Pankrats, A. I.
Petrakovskii, G. A.
Tugarinov, V. I.
Kartashev, A. V.
Temerov, V. L.] Russian Acad Sci, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia
ИФ СО РАН
Kirensky Institute of Physics, Russian Academy of Science, Siberian Branch, Krasnoyarsk 660036, Russian Federation
Доп.точки доступа:
Pankrats, A. I.; Панкрац, Анатолий Иванович; Petrakovskii, G. A.; Петраковский, Герман Антонович; Tugarinov, V. I.; Тугаринов, Василий Иванович; Kartashev, A. V.; Карташев, Андрей Васильевич; Temerov, V. L.; Темеров, Владислав Леонидович
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11.
Thermophysical
studies of
the phase transitions in (NH4)(3)NbOF6 crystals / V. D. Fokina [et al.]> // Phys. Solid State. - 2007. -
Vol. 49
,
Is. 8
. - P. 1548-1553,
DOI
10.1134/S1063783407080240. - This work was supported by the Russian Foundation for Basic Research (project no. 06-02-16102), Krasnoyarsk Regional Science Foundation (project no.16G098), and the Council on Grants from President of the Russian Federation for the Support of Leading Scientific Schools of the Russian Federation (project NSh-4137.2006.2). - Cited References: 17 . - ISSN 1063-7834
РУБ
Physics, Condensed Matter
Рубрики:
OXYFLUORIDES
DISORDER
RB
CS
Аннотация:
The
thermophysical
properties of oxyfluoride (NH4)(3)NbOF6 were studied in detail over wide ranges of temperatures and pressures. At atmospheric pressure, a sequence of four structural phase transitions was established with the following changes in entropy: Delta S (1) = Rln 2.7, delta S (2) = Rln38.3, Delta S (3) = 0.08R, and Delta S (4) = 0.17R. An external hydrostatic pressure was found to narrow the region of existence of the initial cubic phase. A triple point was detected in the p-T diagram; at a pressure above 0.07 GPa, the transition between the tetragonal and monoclinic phases occurs through a distorted high-pressure phase.
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Публикация на русском языке
Теплофизические исследования фазовых переходов в кристалле (NH4)3NBOF6 [Текст] / Н. Б. Иванова [и др.] // Физ. тверд. тела. - 2007. - Т. 49 Вып. 8. - С. 1475-1479
Держатели документа:
Russian Acad Sci, Siberian Div, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
Russian Acad Sci, Far E Div, Inst Chem, Vladivostok 690022, Russia
ИФ СО РАН
Kirensky Institute of Physics, Siberian Division, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk 660036, Russian Federation
Institute of Chemistry, Far East Division, Russian Academy of Sciences, pr. Stoletiya Vladivostoka 159, Vladivostok 690022, Russian Federation
Доп.точки доступа:
Fokina, V. D.; Фокина, Валентина Дмитриевна; Flerov, I. N.; Флёров, Игорь Николаевич; Gorev, M. V.; Горев, Михаил Васильевич; Bogdanov, E. V.; Богданов, Евгений Витальевич; Bovina, A. F.; Бовина, Ася Федоровна; Laptash, N. M.
}
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12.
THERMOPHYSICAL
STUDIES OF
THE RB2KFEF6 FERROELASTIC / M. V. GOREV [и др.]> // Fiz. Tverd. Tela. - 1994. -
Vol. 36
,
Is. 4
. - P. 1121-1125. - Cited References: 15 . - ISSN 0367-3294
РУБ
Physics, Condensed Matter
Рубрики:
STRUCTURAL PHASE-TRANSITIONS
RB2KMIIIF6 ELPASOLITES
DIAGRAMS
WOS
Доп.точки доступа:
GOREV, M. V.; FLEROV, I. N.; VORONOV, V. N.; TRESSO, A.; GRANNEK, J.; GHAMINADE, J. P.
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