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1.


    Zyryanov, V. Ya.
    Electro-optics of polymer dispersed ferroelectric liquid crystals / V. Ya. Zyryanov, S. L. Smorgon, V. F. Shabanov // Ferroelectrics. - 1993. - Vol. 143, Is. 1. - P. 271-276, DOI 10.1080/00150199308008338 . - ISSN 0015-0193

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Доп.точки доступа:
Smorgon, S. L.; Сморгон, Сергей Леонидович; Shabanov, V. F.; Шабанов, Василий Филиппович; Зырянов, Виктор Яковлевич
}
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2.


    Zinenko, V. I.
    The theory of the phase transitions in the crystals MeIMeIIBX4 / V. I. Zinenko, D. H. Blat, K. S. Aleksandrov // Ferroelectrics. - 1980. - Vol. 29, Is. 1. - P. 201-204, DOI 10.1080/00150198008008480. - Cited References: 7 . - ISSN 0015-0193
РУБ Materials Science, Multidisciplinary + Physics, Condensed Matter

Аннотация: The model of the order-disorder phase transitions in crystals MeIMeIIBX4 is investigated in a mean field approximation. It is supposed in the model that group BX4 in the α-phase (D46h) moves in four-well potential.

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Доп.точки доступа:
Blat, D. H.; Aleksandrov, K. S.; Александров, Кирилл Сергеевич; Зиненко, Виктор Иванович
}
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3.


    Zinenko, V. I.
    Statistical mechanics of cation ordering in PbSc1/2Ta1/2O3 and PbSc1/2Nb1/2O3 solid solutions / V. I. Zinenko, S. N. Sofronova // Phys. Solid State. - 2005. - Vol. 47, Is. 12. - P. 2309-2314, DOI 10.1134/1.2142896. - Cited References: 17 . - ISSN 1063-7834
РУБ Physics, Condensed Matter
Рубрики:
PHASE-TRANSITION
   PEROVSKITE
   DISORDER
   FERROELECTRICS
   CRYSTALS
   MODEL
Аннотация: A model Hamiltonian for B cation ordering (Sc-Nb(Ta)) in PbSc1/2Nb1/2O3 and PbSc1/2Ta1/2O3 solid solutions is constructed. The parameters of the model Hamiltonian are determined from the ab initio calculation within the ionic crystal model with allowance made for the deformability and the dipole and quadrupole polarizabilities of the ions. The temperatures of the phase transition due to the ordering of the B cations are calculated by the Monte Carlo method in the mean-field and cluster approximations. The phase transition temperatures calculated by the Monte Carlo method (1920 K for PbSc1/2Ta1/2O3 and 1810 K for PbSc1/2Nb1/2O3) are consistent with the experimental data (1770 and 1450 K, respectively). The thermodynamic properties of the cation ordering are investigated using the Monte Carlo method. (c) 2005 Pleiades Publishing, Inc.

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

Доп.точки доступа:
Sofronova, S. N.; Софронова, Светлана Николаевна; Зиненко, Виктор Иванович
}
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4.


    Zinenko, V. I.
    Order-disorder type phase transitions with two-order parameters / V. I. Zinenko, K. S. Aleksandrov // Ferroelectrics. - 1978. - Vol. 21. - P. 503-505DOI 10.1080/00150197808237310
   Перевод заглавия: Фазовые переходы типа порядок-беспорядок с двухкомпонентными параметрами
Аннотация: The model of phase transitions with two-order parameters is considered. Every order parameter is related to the ordering of radicals in a crystal. The radicals move in symmetric (asymmetric) double-well type potential above Tc . The thermodynamics of the model is discussed in a mean-field approximation.

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Доп.точки доступа:
Aleksandrov, K. S.; Александров, Кирилл Сергеевич; Зиненко, Виктор Иванович; International meeting on ferroelectricity(4 ; 1977 ; 18-23 Sept. ; Leningrad)
}
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5.


    Zinenko, V. I.
    Ab initio calculation of the ferroelectric phase transition in disordered and ordered PbSc0.5Ta0.5O3 and PbSc0.5Nd0.5O3 solid solutions with the use of a model Hamiltonian / V. I. Zinenko, N. G. Zamkova // J. Exp. Theor. Phys. - 2008. - Vol. 106, Is. 3. - P. 542-549, DOI 10.1134/S1063776108030138. - Cited References: 17 . - ISSN 1063-7761
РУБ Physics, Multidisciplinary
Рубрики:
RELAXOR FERROELECTRICS
   PEROVSKITES
   BATIO3
   PBTIO3
Кл.слова (ненормированные):
Approximation theory -- Ferroelectric materials -- Hamiltonians -- Mathematical models -- Monte Carlo methods -- Phase transitions -- Ferroelectric phase transition -- Gordon-Kim model -- Local-mode approximation -- Solid solutions
Аннотация: To describe the ferroelectric phase transition in ordered and disordered PbSc0.5Ta0.5O3 (PST) and PbSc0.5Nd0.5O3 (PSN) solid solutions, a model Hamiltonian is written in the local-mode approximation, in which long-range dipole-dipole and short-range interactions of local modes are taken into account. The Hamiltonian parameters are determined from the set of energies of a series of distorted structures, calculated within the nonempirical generalized Gordon-Kim model. The statistical mechanics of the systems with a model Hamiltonian is investigated by the Monte Carlo method. It is revealed that PSN solid solutions undergo a transition to the ferroelectric rhombohedral phase through an intermediate phase, existing in a narrow temperature range. PST solid solutions undergo a ferroelectric phase transition directly from the paraelectric cubic to the ferroelectric rhombohedral phase.

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Держатели документа:
[Zinenko, V. I.
Zamkova, N. G.] 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, Akademgorodok, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Zamkova, N. G.; Замкова, Наталья Геннадьевна; Зиненко, Виктор Иванович
}
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6.


    Zeer, E. P.
    On the nature of phase transition in the potassium ferrocyanide crystal family / E. P. Zeer, Yu. G. Kubarev, A. G. Lundin // Ferroelectrics. - 1978. - Vol. 20, Spesial issue. - P. 223-224DOI 10.1080/00150197808237219. - Библиогр.: 12 назв.
Аннотация: The model and statistical description of the phase transitions in LiNH4SO4 were proposed. The nmr investigation of the high pressure phase was carried out.

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Доп.точки доступа:
Kubarev, Yu.G.; Lundin, A. G.; Лундин, Арнольд Геннадьевич; Зеер, Эвальд Петрович; International meeting on ferroelectricity(4 ; 1977 ; 18-23 Sept. ; Leningrad)
}
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7.


    Zamkova, N. G.
    Monte-Carlo simulations of the phase-transitions in the RB2ZNCL4 crystal / N. G. Zamkova, V. I. Zinenko // Ferroelectr. Lett. Sect. - 1994. - Vol. 18, Is. 1-2. - P. 1-11, DOI 10.1080/07315179408203379. - Cited References: 9 . - ISSN 0731-5171
РУБ Physics, Condensed Matter
Рубрики:
INCOMMENSURATE
Аннотация: The model of the order- disorder phase transitions in Rb3ZnCl4 is studied. In this model BX(4) group has a four equlibrium orientations in a disordered hexagonal phase. The constants of the interaction between ordering BX(4) groups are calculated in the framework of the electrostatic model. It is shown that these constants have a competitive nature. The Monte-Carlo method is applied to study the successive phase transitions hexagonal double right arrow orthorombic double right arrow incommensurate double right arrow commensurate ferroelectric phases.

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Доп.точки доступа:
Zinenko, V. I.; Зиненко, Виктор Иванович; Замкова, Наталья Геннадьевна
}
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8.


    Zamkova, N. G.
    First-principles calculations of ferroelectric properties in AA`BB`O6 double perovskites with different types of cation ordering / N. G. Zamkova, V. S. Zhandun, V. I. Zinenko // Phys. status solidi B. - 2013. - Vol. 250, Is. 9. - P. 1888-1897, DOI 10.1002/pssb.201349084 . - ISSN 0370-1972
   Перевод заглавия: Первопринципные расчеты сегнетоэлектрических свойств двойных перовскитов AA'BB'O6
Кл.слова (ненормированные):
Density functional theory -- Double perovskites -- Ferroelectrics -- Polarization
Аннотация: First-principles calculations of lattice dynamics and polarization properties have been performed for double perovskite ABiBNbO6 (A - alkali metal Na, Rb, and B - trivalent metal Sc, Lu). Three possible types of A- and B-site cation ordering are studied: layer and columnar ordering of A-site cations with rocksalt ordering of B-site cations, and layer ordering of both cations. The ground state of all compounds is polar with a large value of polarization for all types of cation ordering. For some compounds we obtain spontaneous polarization of 0.7-1.0Cm-2 that is twice the BaTiO3 value. For RbBiScNbO6 the lowest-energy state has layer ordering of both A- and B-site cations, which is rare for compounds with double-perovskite structure.

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Доп.точки доступа:
Zhandun, V. S.; Жандун, Вячеслав Сергеевич; Zinenko, V. I.; Зиненко, Виктор Иванович; Замкова, Наталья Геннадьевна
}
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9.


    Zamkova, N. G.
    Effect of Ca 2+ ion substitution by the trivalent ions (Sc 3+, In 3+, La 3+, Bi 3+) on the ferroelectric instability in orthorhombic CaTiO3 / N. G. Zamkova, V. I. Zinenko, A. S. Shinkorenko // Ferroelectrics : Special Issue: Professor Wolfgang Kleemann in honor of his 70th birthday. - 2012. - Vol. 426. - P. 132-138, DOI 10.1080/00150193.2012.671657. - Cited References: 9. - This work was supported by the Russian Foundation for Basic Research (project no. 09-02-00067) . - ISSN 0015-0193. - ISSN 1563-5112
РУБ Materials Science, Multidisciplinary + Physics, Condensed Matter

Кл.слова (ненормированные):
Ferroelectric -- polarization -- lattice dynamics
Аннотация: Vibration frequencies of instable ferroelectric modes, as well as dependencies of crystal energy on ion's displacement amplitudes of these modes in doped compounds Ca1–x A x Ti1–x/4□ x /4O3 (space group Pbmn) with А–Sc3+, In3+, La3+, Bi3+ (□–vacancy) have been calculated in the framework of generalized nonparametric Gordon–Kim model. To compensate excessive positive charge the vacancies were considered to be at Ti4+ sites. Calculations were carried out in the «average» crystal approximation for the impurity concentration x = 0.25. For this purpose 40 atoms’ supercell sets with the different ordering of the heterovalent ions Ca2+ and impurity А3+ have been considered. Every type of impurity has been found to induce ferroelectric instability in doped compounds.

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Держатели документа:
[Zamkova, N. G.
Zinenko, V. I.
Shinkorenko, A. S.] Russian Acad Sci, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk, Russia

Доп.точки доступа:
Zinenko, V. I.; Зиненко, Виктор Иванович; Shinkorenko, A. S.; Шинкоренко, Алексей Сергеевич; Замкова, Наталья Геннадьевна
}
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10.


   
    X-ray study of phase transitions in CS3Sb2I9 crystal / B. S. Bagautdinov [et al.] // Solid State Commun. - 1999. - Vol. 111, Is. 7. - P. 361-366, DOI 10.1016/S0038-1098(99)00217-3. - Cited References: 4 . - ISSN 0038-1098
РУБ Physics, Condensed Matter
Рубрики:
CS3BI2I9
Кл.слова (ненормированные):
ferroelectrics -- X-ray scattering -- phase transitions -- Crystal growth -- Ferroelectric materials -- Phase transitions -- Single crystals -- Thermal effects -- X ray scattering -- Trigonal symmetry -- Cesium compounds
Аннотация: An X-ray study of three phase transitions (PTs) at 86, 78 and 72 K has been carried out for the trigonal modification of the Cs3Sb2I9 crystal (space group P-3m1, a = 8.460 Angstrom, c = 10.398 Angstrom). The T-c1 = 86 K PT preserves the trigonal symmetry and is associated with the doubling of the c-parameter. At T-c2 = 72 K a doubling of a and b is observed. An intermediate incommensurate phase with q(1) = 1/2c*, q(2) = (1/2 - delta)a* + 1/2c* has been detected in the temperature range of 78-72 K. The lock-in PT at 72 K has a first order character. (C) 1999 Published by Elsevier Science Ltd. All rights reserved.

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Держатели документа:
Russian Acad Sci, Inst Crystallog, Moscow 117333, Russia
Russian Acad Sci, Inst Solid State Phys, Chernogolovka 142432, Russia
LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
Univ Helsinki, FIN-00014 Helsinki, Finland
Univ Lausanne, Inst Christallog, CH-1015 Lausanne, Switzerland
ИФ СО РАН
Institute of Solid State Physics, RAS, 142432, Chernogolovka, Russian Federation
Institute of Crystallography, Russ. Acad. Sci., Leninski P., Moscow, Russian Federation
L.V. Kirensky Institute of Physics, 660036, Krasnoyarsk, Russian Federation
University of Helsinki, FIN-00014, Helsinki, Finland
Universite de Lausanne, Institut de Christallographie, 1015, Lausanne-Dorigny, Switzerland

Доп.точки доступа:
Bagautdinov, B. S.; Novikova, M. S.; Aleksandrova, I. P.; Александрова, Инга Петровна; Blomberg, M. K.; Chapuis, G.
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