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A raman study of hydrostatic pressure induced phase transitions in Rb2KInF6 crystals / A. N. Vtyurin [et al.] // Phys. Solid State. - 2012. - Vol. 54, Is. 5. - P. 934-936, DOI 10.1134/S1063783412050472. - Cited References: 16. - This study was supported by the Russian Foundation for Basic Research (project nos. 11-02-98002-r_sibir' and 09-02-00062), the Siberian Branch of the Russian Academy of Sciences (integration project no. 101), and the Council on Grants from the President of the Russian Federation (grant no. HSh-4645.2010.2). . - ISSN 1063-7834

РУБ Physics, Condensed Matter
Рубрики:
LATTICE-DYNAMICS
ELPASOLITES
SPECTRA
Аннотация: The Raman spectra of the elpasolite (Rb2KInF6) crystal have been studied in the pressure range from 0 to 5.3 GPa at a temperature of 295 K. A phase transition at a pressure of approximately 0.9 GPa has been found. An analysis of the variations in the spectral parameters has led to the conclusion that the phase transition to a distorted phase is accompanied by the doubling of the volume of the primitive cell of the initial cubic phase. Numerical calculations of the lattice dynamics in the Rb2KInF6 crystal have been performed. The numerical simulation has established that the phase transition at a pressure of 0.9 GPa is associated with condensation of the F (lg) mode. A probable high-pressure phase is the phase with space group C2/m.

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Публикация на русском языке Исследование фазовых переходов в кристалле Rb2KInF6, индуцированных гидростатическим давлением, методом комбинационного рассеяния света // Физика твердого тела : Физико-технический институт им. А.Ф.Иоффе РАН, 2012. - Т. 54, Вып. 5. - С. 880-882. - ISSN 0367-3294

Держатели документа:
[Vtyurin, A. N.
Krylov, A. S.
Krylova, S. N.
Oreshonkov, A. S.
Voronov, V. N.] Russian Acad Sci, Siberian Branch, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
[Goryainov, S. V.] Russian Acad Sci, Siberian Branch, Inst Mineral & Petrog, Novosibirsk 630090, Russia

Доп.точки доступа:
Vtyurin, A. N.; Втюрин, Александр Николаевич; Krylov, A. S.; Крылов, Александр Сергеевич; Goryainov, S. V.; Горяйнов, Сергей Владимирович; Krylova, S. N.; Крылова, Светлана Николаевна; Oreshonkov, A. S.; Орешонков, Александр Сергеевич; Voronov, V. N.; Воронов, Владимир Николаевич
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A study of the microwave dielectric permittivity of liquid crystals in electric and magnetic fields / B. A. Belyaev [et al.] // Tech. Phys. - 1998. - Vol. 43, Is. 1. - P. 105-109, DOI 10.1134/1.1258946. - Cited References: 8 . - ISSN 1063-7842
Аннотация: A microwave detector based on a self-sustained oscillator circuit is proposed as a means to investigate the real and imaginary components of the dielectric permittivity of liquid crystals in external electric and magnetic fields. Results are given for measurements of a 500 MHz oscillator frequency for two types of nematic crystals, 5CBP and MBBA. Fundamental regularities are identified in the behavior of the microwave dielectric permittivity of samples in electric and magnetic fields. It is shown that the minimum of the high-frequency dielectric loss in liquid crystals correspond to a situation in which the long axes of the molecules are oriented parallel to the direction of the microwave electric field. (C) 1998 American Institute of Physics. [S1063-7842(98)02201-6].

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Публикация на русском языке Исследование СВЧ диэлетрической проницаемости жидких кристалов в электрических и магнитных полях [Текст] / Б. А. Беляев, Н. А. Дрокин, В. Ф. Шабанов, В. Н. Шепов // Журнал технической физики. - 1998. - Т. 68 Вып. 1. - С. 117-122

Держатели документа:
Russian Acad Sci, LV Kirensky Phys Inst, Siberian Dept, Krasnoyarsk 660036, Russia
ИФ СО РАН
L. V. Kirenskii Physics Institute, Siberian Department, Russian Academy of Sciences, 660036 Krasnoyarsk, Russian Federation

Доп.точки доступа:
Belyaev, B. A.; Беляев, Борис Афанасьевич; Drokin, N. A.; Дрокин, Николай Александрович; Shabanov, V. F.; Шабанов, Василий Филиппович; Shepov, V. N.; Шепов, Владимир Николаевич
}
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Abramova, G. M.
Metal-insulator transition, magnetoresistance, and magnetic properties of 3d-sulfides (Review) / G. M. Abramova, G. A. Petrakovskii // Low Temp. Phys. - 2006. - Vol. 32, Is. 8-9. - P. 725-734 ; Физика низких температур, DOI 10.1063/1.2219495. - Cited References: 74 . - ISSN 1063-777X

РУБ Physics, Applied
Рубрики:
GIANT-MAGNETORESISTANCE
   PHASE-TRANSITION
   ALPHA-MNS
   COLOSSAL MAGNETORESISTANCE
   SINGLE-CRYSTALS
   FES-MNS
   SULFIDES
   FERROMAGNETISM
   SEMICONDUCTORS
   TEMPERATURE
Аннотация: The results of a study of the transport and magnetic properties of some sulfides of 3d elements are reported. The concentration transitions with a change of conductivity type and a change of magnetic order are considered, and the features of the colossal magnetoresistance in FexMn1-xS and CuVxCr1-xS2 solid solutions are discussed.

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Держатели документа:
Russian Acad Sci, LV Kirenskii Inst Phys, Siberian Div, Krasnoyarsk 660036, Russia
ИФ СО РАН
L. V. Kirenskii Institute of Physics, Siberian Division, Russian Academy of Sciences, Krasnoyarsk, Akademgorodok 660036, Russian Federation

Доп.точки доступа:
Petrakovskii, G. A.; Петраковский, Герман Антонович; Абрамова, Галина Михайловна

}
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ABSORPTION-SPECTRA AND FARADAY-EFFECT IN CS2NANDCL6 AND CS2NAPRCL CRYSTALS / I. S. EDELMAN [и др.] // Fiz. Tverd. Tela. - 1985. - Vol. 27, Is. 11. - P. 3467-3470. - Cited References: 8 . - ISSN 0367-3294

РУБ Physics, Condensed Matter

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Доп.точки доступа:
EDELMAN, I. S.; GALANOV, E. K.; KOKOV, I. T.; MALAKHOVSKII, A. V.; ANISTRATOV, A. T.
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Acoustical and acoustooptical properties of lead tetraborate single crystals / K. S. Aleksandrov [et al.] // Phys. Solid State. - 2004. - Vol. 46, Is. 9. - P. 1637-1638, DOI 10.1134/1.1799178. - Cited References: 6 . - ISSN 1063-7834
Рубрики:
STRONTIUM
Аннотация: The velocities of bulk acoustic waves and the acoustooptical Q factors M-2 are measured. The results of these measurements are used for calculating the photoelastic coefficients of a lead tetraborate single crystal. (C) 2004 MAIK "Nauka/Interperiodica".

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Публикация на русском языке Акустические и акустооптические свойства монокристаллов тетрабората свинца [Текст] / К. С. Александров [и др.] // Физ. тверд. тела. - 2004. - Т. 46 Вып. 9. - С. 1586-1587

Держатели документа:
Russian Acad Sci, LV Kirensky Phys Inst, Siberian Div, Krasnoyarsk 660036, Russia
Krasnoyarsk State Univ, Krasnoyarsk 660062, Russia

Доп.точки доступа:
Aleksandrov, K. S.; Александров, Кирилл Сергеевич; Zamkov, A. V.; Замков, Анатолий Васильевич; Zaitsev, A. I.; Зайцев, Александр Иванович; Turchin, P. P.; Sysoev, A. M.; Parfenov, A. A.
}
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Acoustooptic and elastic properties of NaBi(WO4)2 and LiBi(MoO4)2crystals / K. S. Aleksandrov [et al.] // Russ. Ultrason. - 1988. - Vol. 18, Is. 3. - P. 168-171 . - ISSN 0048-8828
Кл.слова (ненормированные):
Acoustooptical Devices--Materials -- Elasticity -- Lithium Compounds -- Sodium Compounds -- Acoustooptic Properties -- Bulk Acoustic Waves -- Elastic Properties -- Crystals
Аннотация: In recent years interest has been shown in crystals with the scheelite structure (point symmetry group 4/m) as promising materials for acoustooptic devices. However, nearly all the work done so far has been on the NaBi(MoO4)2 and PbMoO4 crystals. In this paper the authors give the results of a study of the elastic and acoustooptic properties of NaBi(WO4)2 and LiBi(MoO4)2 crystals from a series of isomorphic compounds with the scheelite structure carried out in order to determine the extent of the changes in the elastic and acoustooptic properties of this series of crystals when the structural elements are changed.

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Держатели документа:
USSR Acad of Sciences, Russian Federation

Доп.точки доступа:
Aleksandrov, K. S.; Александров, Кирилл Сергеевич; Burkov, S. I.; Samkov, A. V.; Kholov, A.; Khafizov, S.Kh.; Shabanova, L. A.; Klevtsov, P. V.; Красноярский государственный университет
}
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AFMR LINEWIDTH STUDY OF FEBO3 CRYSTALS GROWN FROM SOLUTION-MELTING / G. A. PETRAKOVSKII [и др.] // Fiz. Tverd. Tela. - 1984. - Vol. 26, Is. 12. - P. 3720-3722. - Cited References: 6 . - ISSN 0367-3294

РУБ Physics, Condensed Matter

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Доп.точки доступа:
PETRAKOVSKII, G. A.; SOSNIN, V. M.; RUDENKO, V. V.; RYBNIKOVA, S. M.
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Aleksandrov, K. S.
Architecture and properties of perovskite-like crystals / K. S. Aleksandrov, B. V. Beznosikov // Ferroelectrics. - 1999. - Vol. 226, Is. 1-4. - P. 1-9, DOI 10.1080/00150199908230285. - Cited References: 9 . - ISSN 0015-0193

РУБ Materials Science, Multidisciplinary + Physics, Condensed Matter

Кл.слова (ненормированные):
perovskites -- perovskite-like crystals -- new representatives of Ruddlesden-Popper's phases -- New representatives of Ruddlesden-Popper's phases -- Perovskite-like crystals -- Perovskites
Аннотация: A variety of the known structures of perovskite-like crystals including cation- and anion-deficient phases were considered as the intergrowth systems of slabs containing n-layers (n = 1,2, 3,...infinity) of corner-linked octahedra BX6, pyramids EX5 or square-planar nets BX4 (B-cation, X- anion) linked by intermediate blocks of different types.([1- 3]) Some new structural types and new representatives of ferroelectrics, ferroelastics and HTSC's can be constructed on this basis. The prognosis of new possible representatives in Ruddlesden-Popper's family is discussed.
A variety of the known structures of perovskite-like crystals including cation- and anion-deficient phases were considered as the intergrowth systems of slabs containing n-layers (n = 1, 2, 3, . . . ?) of corner-linked octahedra BX6, pyramids BX5 or square-planar nets BX4 (B-cation, X-anion) linked by intermediate blocks of different types.[1-3] Some new structural types and new representatives of ferroelectrics, ferroelastics and HTSC's can be constructed on this basis. The prognosis of new possible representatives in Ruddlesden-Popper's family is discussed.

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Доп.точки доступа:
Beznosikov, B. V.; Безносиков, Борис Валерьевич; Александров, Кирилл Сергеевич; USA-CIS-Baltic Seminar on Ferroelectricity(3 ; Jun 01-06, 1997 ; Bozeman, Montana)
}
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Aleksandrov, K. S.
Architecture of perovskite-like crystals / K. S. Aleksandrov, B. V. Beznosikov // Crystallogr. Rep. - 1997. - Vol. 42, Is. 4. - P. 556-566 . - ISSN 1063-7745
Аннотация: The structures of the well-known perovskite-like crystals, including stoichiometric and both cation- and anion-dencient compounds, are considered as intergrowth systems of stacks consisting either of n layers (n = 1 - ?) connected via the vertices of the BX6 octahedra or of combinations of layers of octahedra, BX5 pyramids, and planar networks of BX4 squares with intermediate block layers of various types. The classification of stacks and block layers in these structures is suggested. Based on this classification, the known structure types are considered and new structure types, including various possible superconductor structures, are predicted.

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Публикация на русском языке Александров, Кирилл Сергеевич. Архитектура перовскитоподобных кристаллов [Текст] / К. С. Александров, Б. В. Безносиков // Кристаллография. - 1997. - Т. 42 Вып. 4. - С. 613-623

Доп.точки доступа:
Beznosikov, B. V.; Безносиков, Борис Валерьевич; Александров, Кирилл Сергеевич
}
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10.

    Aleksandrov, K. S.
    Behaviour of the elastic constants of KMnF3 single crystals near the transition of puckering / K. S. Aleksandrov, L. M. Reshchikova, B. V. Beznosikov // Phys. Status Solidi. - 1966. - Vol. 17, Is. 1. - P. K17-K20, DOI 10.1002/pssb.19660180149. - Cited References: 7 . - ISSN 0370-1972
   Перевод заглавия: Поведение упругих констант вблизи перехода смятия

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Доп.точки доступа:
Reshchikova, L. M.; Beznosikov, B. V.; Безносиков, Борис Валерьевич; Александров, Кирилл Сергеевич
}
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11.

    Aleksandrov, K. S.
    Elastic constants of MgF2 single crystals / K. S. Aleksandrov, L. A. Shabanova, V. I. Zinenko // Phys. Status Solidi. - 1969. - Vol. 33, Is. 1. - P. K1-K3, DOI 10.1002/pssb.19690330154. - Cited References: 7 . - ISSN 0370-1972
   Перевод заглавия: Упругие константы монокристаллов MgF2

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Доп.точки доступа:
Shabanova, L. A.; Шабанова Л. А.; Zinenko, V. I.; Зиненко, Виктор Иванович; Александров, Кирилл Сергеевич
}
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12.

    Aleksandrov, K. S.
    Hierarchies of perovskite-like crystals (Review) / K. S. Aleksandrov, V. V. Beznosikov // Phys. Solid State. - 1997. - Vol. 39, Is. 5. - P. 695-715, DOI 10.1134/1.1130120. - Cited References: 143 . - ISSN 1063-7834
Рубрики:
CU-O SYSTEM
   HIGH-PRESSURE SYNTHESIS
   SUPERCONDUCTING COPPER OXIDES
   STRUCTURAL PHASE-TRANSITIONS
   NEUTRON POWDER DIFFRACTION
   SINGLE-CRYSTAL
   X-RAY
   CUPRATE SUPERCONDUCTORS
   DIELECTRIC-PROPERTIES
   HOMOLOGOUS SERIES
Аннотация: A system of mutual relationships (a hierarchy) is constructed between various perovskite-like crystal structures based on available structural data. All the perovskite-like structures are characterized by a common indicator of their relationship-the presence of layers, stacks, or frameworks made up of BX6 octahedra linked at their vertices (where B is a cation, X is an anion) or fragments of octahedra in the form of BX5 pyramids or BX4 squares in anion-deficient compounds. In layered structures, these stacks are joined to each other by various intermediate blocks. It is well known that one homological series of compounds is constructed by increasing the number of layers in a stack while preserving the same kind of connecting block. Crystals of various series that contain identical stacks (but different blocks of one or two types) can also be related to one another via this feature. The hierarchical system includes compounds with small distortions in their structures for various reasons. (C) 1997 American Institute of Physics.

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Публикация на русском языке Александров, Кирилл Сергеевич. Иерархия перовскитоподобных кристаллов (Обзор) [Текст] / К. С. Александров, Б. В. Безносиков // Физ. тверд. тела. - Санкт-Петербург, 1997. - Т. 39 Вып. 5. - С. 785-808

Доп.точки доступа:
Beznosikov, B. V.; Безносиков, Борис Валерьевич; Александров, Кирилл Сергеевич
}
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13.

Aleksandrov, K. S.
Octahedral tilt phases in perovskite-like crystals with slabs containing an even number of octahedral layers / K. S. Aleksandrov, J. Bartolome // Journal of Physics: Condensed Matter. - 1994. - Vol. 6, Is. 40. - Ст. 013. - P. 8219-8235, DOI 10.1088/0953-8984/6/40/013 . - ISSN 0953-8984
Аннотация: The possible combinations of different octahedral tilts are considered for layered crystals having an even number of octahedral layers in perovskite-like slabs. A simple method to determine the resultant space-group symmetry is proposed, and the distorted phases are enumerated, both for a single kind of tilt around axes of the initial structure G 0=I4/mmm and for superpositions of different tilts in the slabs. Some of the tilt systems correspond to symmetry changes due to definite irreducible representations of G 0. In the single-layered crystals, l=1, A 2BX 4. Some of the representations correspond to lattice modes observed experimentally. No such modes have been found yet for even-layered (l=2n) crystals. A comparison with known experimental data is performed. The data obtained can be used for the proposition of 'trial models' in the course of structural analysis of related crystals.

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Доп.точки доступа:
Bartolome, J.; Александров, Кирилл Сергеевич
}
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14.

    Aleksandrov, K. S.
    Phase transition due to octahedral tilts in several families of crystals related to perovskite / K. S. Aleksandrov // Journal of the Physical Society of Japan. - 1980. - Vol. 49, Supplement B. - P. 60-63 . - ISSN 0031-9015
   Перевод заглавия: Фазовые переходы в семействах кристаллов, родственных перовскиту

Материалы конференции

Доп.точки доступа:
Александров, Кирилл Сергеевич; Japanese-Soviet symposium on ferroelectricity(2 ; 1980 ; Sept. 6-11 ; Kyoto, Japan)Советско-японский симпозиум по сегнетоэлектричеству(2 ; 1980 ; 6-11 сент. ; Киото, Япония)
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15.

Aleksandrov, K. S.
Phase transitions in crystals related to α-K2SO4 / K. S. Aleksandrov, B. V. Beznosikov // Ferroelectrics. - 1991. - Vol. 117, Is. 1. - P. 331-345, DOI 10.1080/00150199108222426. - Cited References: 20 . - ISSN 0015-0193

РУБ Materials Science, Multidisciplinary + Physics, Condensed Matter

Аннотация: Sequences of phase transitions (PT's) related to α-K2SO4 prototype (G0) are considered as the ordered phases mainly due to orientational ordering of tetrahedral groups. Possibilities of statistical models with four and twelve states in G0 are compared. Last model allows to describe PT's from G0 to all known relative structures including K2MoO4-, Sr2GeS4- and Na2SO4III-types. PT's in CsLiCrO4, Cs2CdI4 and sequence of PT's in KLiSO4 are considered as examples.

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Доп.точки доступа:
Beznosikov, B. V.; Безносиков, Борис Валерьевич; Александров, Кирилл Сергеевич
}
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16.

    Aleksandrov, K. S.
    Phase-transitions and distortions of the structure in the family of crystals related to alpha-k2so / K. S. Aleksandrov // Kristallografiya. - 1993. - Vol. 38, Is. 1. - P. 128-139 ; Crystallogr. Rep. - Cited References: 38 . - ISSN 0023-4761
Рубрики:
X-RAY
   EXPECTED STRUCTURES
   A2BX4 COMPOUNDS
   TEMPERATURE
   (NH4)2BEF4
   CHEMISTRY
   DISORDER
   SYMMETRY

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Публикация на русском языке Александров, Кирилл Сергеевич. Фазовые переходы и искажения структуры в семействе кристаллов родственных α – K2SO4. [Текст] / К. С. Александров // Кристаллография. - 1993. - Т. 38 Вып. 1. - С. 128-139

Доп.точки доступа:
Александров, Кирилл Сергеевич

}
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17.

Aleksandrov, K. S.
Spectroscopic investigation of phase transitions in CsLiMoO//4 crystals. / K. S. Aleksandrov, Yu. N. Ivanov, A. D. Schafer // Ferroelectrics. - 1983. - Vol. 55, Is. 1. - P. 671-674 . - ISSN 0015-0193
Кл.слова (ненормированные):
CRYSTALS - Structure -- MAGNETIC RESONANCE -- SPECTROSCOPY, RAMAN -- CESIUM LITHIUM MOLYBDATE -- PHASE TRANSITIONS -- FERROELECTRIC MATERIALS
Аннотация: Raman and NMR spectra in cubic and two distorted phases of CsLiMoO//4 have been studied. Phase transitions in the crystal are shown to belong to order-disorder type.

Scopus

Доп.точки доступа:
Ivanov, Y. N.; Иванов, Юрий Николаевич; Schafer, A. D.; Александров, Кирилл Сергеевич; European Meeting on Ferroelectricity(5 ; 1983 ; Sept. ; 26-30 ; Malaga, Sp)
}
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18.

Aleksandrov, K. S.
Spectroscopic investigation of phase-transitions in CsLiMoO4 crystals / K. S. Aleksandrov, Y. N. Ivanov, A. D. SCHAFER // Ferroelectrics. - 1984. - Vol. 55, Is. 1. - P. 671-674, DOI 10.1080/00150198408015320. - Cited References: 4 . - ISSN 0015-0193

РУБ Materials Science, Multidisciplinary + Physics, Condensed Matter

Аннотация: Raman and NMR spectra in cubic and two distorted phases of CsLiMoO4 have been studied. Phase transitions in the crystal are shown to belong to order-disorder type.

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Доп.точки доступа:
Ivanov, Y. N.; Иванов, Юрий Николаевич; Schafer, A. D.; Александров, Кирилл Сергеевич
}
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19.

Aleksandrov, K. S.
Structural aspects of phase transitions in crystals / K. S. Aleksandrov // Ferroelectrics. - 1983. - Vol. 53, Is. 1. - P. 153-154, DOI 10.1080/00150198408245044 . - ISSN 0015-0193

РУБ Materials Science, Multidisciplinary + Physics, Condensed Matter

Кл.слова (ненормированные):
FERROELECTRIC MATERIALS -- LITHIUM COMPOUNDS - X-Ray Analysis -- PHASE TRANSITIONS -- CRYSTALS
Аннотация: Modern X-ray methods obtain in a short time the complete set of structural amplitudes and solve a crystal structure at constant temperatures (or pressures) on both sides of phase transition. A review of structure investigations with the crystals having the common formula Me prime Me double prime BX//4 (Me prime , Me double prime equals Li, Na, K, Rb, Cs, NH//4 and H; BX//4**2** plus equals SO//4, SeO//4, BeF//4, ZnCl//4) is presented.

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Доп.точки доступа:
Александров, Кирилл Сергеевич; European Meeting on Ferroelectricity(5 ; 1983 ; Sept. ; 26-30 ; Malaga, Sp)
}
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20.

Aleksandrov, K. S.
Structural distortions in families of perovskite-like crystals / K. S. Aleksandrov, J. . Bartolome // Phase Transit. - 2001. - Vol. 74, Is. 3. - P. 255-335, DOI 10.1080/01411590108228754. - Cited References: 262 . - ISSN 0141-1594

РУБ Crystallography + Physics, Condensed Matter
Рубрики:
LOW-TEMPERATURE PHASE
   INELASTIC-NEUTRON-SCATTERING
   POWDER PROFILE REFINEMENT
   MII = CO
   X-RAY
   RAMAN-SCATTERING
   ORDERED PEROVSKITE
   RHOMBOHEDRAL PEROVSKITES
   RB2KMIIIF6 ELPASOLITES
   MAGNETIC-PROPERTIES
Кл.слова (ненормированные):
structural phase transitions -- perovskites -- perovskite-like crystals -- group theoretical classification
Аннотация: The crystallographic and group theoretical analysis of the structural phase transitions in perovskite and perovskite-like crystals is reviewed. We include ABX(3) perovskites and their relative crystals of ReO3 type (G(0) = O-h(1)), elpasolites, cryolites and their relatives (G(0) = O-h(5)) layered crystals of TIAIF(4) series (G(0) = D-4h(1)), Aurivillius and Ruddlesden-Popper series (G(0) = D-4h(17)). The structures in their initial phase G(0) often contain n layers (n = 1, 2,3) of vertex linked octahedra. The distorted phases produced by one kind of tilt and by superposition of tilts in the slabs are enumerated. Most of the tilts correspond to symmetry changes, which can be associated to definite librational lattice modes irreducible representations of the G(0) group. The softening of modes associated to the PT has been found experimentally in many perovskites, elpasolites and layered crystals with n = 1. In contrast, no such soft modes have been found yet for even-layered (n = 2) crystals. Examples of successive phase transitions due to the superposition of tilts in these types of crystals have been collected.

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Держатели документа:
LV Kirenskii Inst Phys, Siberian Branch, Russian Acad Sci, Krasnoyarsk 660036, Russia
Univ Zaragoza, CSIC, Inst Ciencias Mat Aragon, Zaragoza, Spain
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Доп.точки доступа:
Bartolome, J.; Александров, Кирилл Сергеевич
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