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1.
Flerov, I. N.
Thermal-
expansion
and phase-transitions in K2ZnCl4 crystal / I. N. Flerov, L. A. Kot> // Fiz. Tverd. Tela. - 1981. -
Vol. 23
,
Is. 8
. - P. 2422-2424. - Cited References: 9 . - ISSN 0367-3294
WOS
Доп.точки доступа:
Kot, L. A.; Флёров, Игорь Николаевич
}
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2.
FLEROV, I. N.
LOW-TEMPERATURE SPECIFIC-HEAT AND THERMAL-
EXPANSION
OF K2SEO4 / I. N. FLEROV, L. A. KOT, A. I. KRIGER> // Fiz. Tverd. Tela. - 1982. -
Vol. 24
,
Is. 6
. - P. 1673-1676. - Cited References: 7 . - ISSN 0367-3294
РУБ
Physics, Condensed Matter
WOS
Доп.точки доступа:
KOT, L. A.; KRIGER, A. I.
}
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3.
Zobov, V. E.
Singular points of time-dependent correlation functions of spin systems on large-dimensional lattices at high temperatures / V. E. Zobov> // Theor. Math. Phys. - 2000. -
Vol. 123
,
Is. 1
. - P. 511-523,
DOI
10.1007/BF02551058. - Cited References: 21 . - ISSN 0040-5779
РУБ
Physics, Multidisciplinary + Physics, Mathematical
Рубрики:
BRANCHED POLYMERS
HEISENBERG MAGNET
EXPANSION
MODELS
Аннотация:
Time-dependent autocorrelation functions are investigated for the Heisenberg model with spins 1/2 on d-dimensional simple cubic lattices of large dimensions d at infinite temperature. The autocorrelation function on the imaginary time axis is interpreted as the generating function of bond trees constructed with double bonds. These trees provide the leading terms with respect to lid for the time-
expansion
coefficients of the autocorrelation function. The correction terms from branch intersections to the generating function in the Bethe approximation are derived for these trees. A procedure is suggested for finding the correction to the coordinate of the singular point of the generating function (i.e., to the reciprocal of the branch growth-rate parameter) from the above correction terms without calculating the number of trees. The leading correction terms of order 1/sigma(2) (where sigma = 2d - 1) are found for the coordinates of the singular points of the autocorrelation function in question and for the generating function of the trees constructed with single bonds in the Eden model.
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Держатели документа:
RAS, LV Kirensky Phys Inst, Siberian Div, Krasnoyarsk, Russia
ИФ СО РАН
Доп.точки доступа:
Зобов, Владимир Евгеньевич
}
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4.
Alekseev, K. N.
The 1/N-
expansion
, quantum-classical correspondence and nonclassical states generation in dissipative higher-order anharmonic oscillators / K. N. Alekseev, J. . Perina> // Phys. Scr. - 2000. -
Vol. 61
,
Is. 1
. - P. 7-16,
DOI
10.1238/Physica.Regular.061a00007. - Cited References: 38 . - ISSN 0281-1847
РУБ
Physics, Multidisciplinary
Рубрики:
2ND-HARMONIC GENERATION
HARMONIC-GENERATION
SQUEEZED STATES
CHAOS
LIGHT
MECHANICS
DYNAMICS
STATISTICS
SYSTEMS
OPTICS
Аннотация:
We develop a method for the determination of the dynamics of dissipative quantum systems in the limit of large number of quanta N, based on the 1/N-
expansion
of Heidmann et al. [Opt. Commun. 54, 189 (1985)] and the quantum-classical correspondence. Using this method, we End analytically the dynamics of nonclassical states generation in the higher-order anharmonic dissipative oscillators for an arbitrary temperature of a reservoir. We show that the quantum correction to the classical motion increases with time quadratically up to some maximal value, which is dependent on the degree of nonlinearity and a damping constant, and then it decreases. Similarities and differences with the corresponding behavior of the quantum corrections to the classical motion in the Hamiltonian chaotic systems are discussed. We also compare our results obtained for some limiting cases with the results obtained by using other semiclassical tools and discuss the conditions for validity of our approach.
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Держатели документа:
Palacky Univ, Dept Opt, Olomouc 77207, Czech Republic
Palacky Univ, Joint Lab Opt, Olomouc 77207, Czech Republic
Acad Sci Czech Republ, Dept Opt, Olomouc, Czech Republic
Acad Sci Czech Republ, Joint Lab Opt, Olomouc 77207, Czech Republic
Russian Acad Sci, Theory Nonlinear Proc Lab, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
ИФ СО РАН
Доп.точки доступа:
Perina, J.
}
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5.
Zobov, V. E.
A Monte Carlo study of the dependence of the growth parameter for trees on the lattice dimension in the Eden model / V. E. Zobov, M. A. Popov> // Theor. Math. Phys. - 2001. -
Vol. 126
,
Is. 2
. - P. 270-279,
DOI
10.1023/A:1005260114182. - Cited References: 17 . - ISSN 0040-5779
РУБ
Physics, Multidisciplinary + Physics, Mathematical
Рубрики:
DIFFUSION-LIMITED AGGREGATION
BRANCHED POLYMERS
HIGH-TEMPERATURES
EXPANSION
TIME
Аннотация:
We use the Monte Carlo method to compute the number of trees with n edges in the Eden model on d-dimensional simple cubic lattices for d = 2, 3, 4, 6, 8, 10. We compare these numbers with the exact data derived by the enumeration method up to n = 12 on the square lattice and up to n = 10 on the cubic lattice. We find that for d greater than or equal to 3, the computed values of the growth parameter for trees agree with the values that we derived earlier by the
expansion
in inverse powers of 2d - 1.
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Держатели документа:
RAS, Siberian Branch, Kirenskii Phys Inst, Krasnoyarsk, Russia
Krasnoyarsk State Univ, Krasnoyarsk, Russia
ИФ СО РАН
Kirenskii Physics Institute, Siberian Branch, RAS, Krasnoyarsk, Russian Federation
Krasnoyarsk State University, Krasnoyarsk, Russian Federation
Доп.точки доступа:
Popov, M. A.; Зобов, Владимир Евгеньевич
}
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6.
Zobov, V. E.
On the coordinate of a singular point of the time correlation function for a spin system on a simple hypercubic lattice at high temperatures / V. E. Zobov, M. A. Popov> // Theor. Math. Phys. - 2002. -
Vol. 131
,
Is. 3
. - P. 862-872,
DOI
10.1023/A:1015935809388. - Cited References: 19 . - ISSN 0040-5779
РУБ
Physics, Multidisciplinary + Physics, Mathematical
Рубрики:
NUCLEAR-DOUBLE-RESONANCE
HEISENBERG MAGNET
DEPENDENCE
MODEL
Кл.слова (ненормированные):
spin dynamics
--
correlation functions
--
power series in time
--
frequency moments
--
singular points
--
generated functions
--
lattice trees
--
multidimensional
expansion
--
Correlation functions
--
Frequency moments
--
Generated functions
--
Lattice trees
--
Multidimensional
expansion
--
Power series in time
--
Singular points
--
Spin dynamics
Аннотация:
Using the d(-1)
expansion
method (d is the space dimension), we estimate the coordinate of the time-dependent autocorrelation function singular point on the imaginary time axis for the spin 1/2 Heisenberg model on a simple hypercubic lattice at high temperatures. We represent the coefficients of the time
expansion
(the spectral moments) for the autocorrelation function as the sums of the weighted lattice figures in which the trees constructed from the double bonds give the leading contributions with respect to d(-1) and the same trees with the built-in squares from six bonds or diagrams with the fourfold bonds give the contribution of the next-to-leading order. We find the corrections to the coordinate of the autocorrelation function singular point that are due to the latter contributions.
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Держатели документа:
RAS, Siberian Branch, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
Krasnoyarsk State Univ, Krasnoyarsk, Russia
ИФ СО РАН
Kirensky Institute of Physics, Siberian Branch, RAS, Krasnoyarsk, Russian Federation
Kirensky State University, Krasnoyarsk, Russian Federation
Доп.точки доступа:
Popov, M. A.; Зобов, Владимир Евгеньевич
}
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7.
Zobov, V. E.
The coordinate of the singular point of generating functions of clusters in the high-temperature dynamics of spin lattice systems with axially symmetric interaction / V. E. Zobov, M. A. Popov> // Theor. Math. Phys. - 2003. -
Vol. 136
,
Is. 3
. - P. 1297-1311,
DOI
10.1023/A:1025603416535. - Cited References: 25 . - ISSN 0040-5779
РУБ
Physics, Multidisciplinary + Physics, Mathematical
Рубрики:
CONSISTENT FLUCTUATING FIELD
NUCLEAR-DOUBLE-RESONANCE
HEISENBERG PARAMAGNET
LINE SHAPE
RELAXATION
SPECTRUM
APPROXIMATION
CRYSTALS
MOMENT
CAF2
Кл.слова (ненормированные):
spin dynamics
--
singular points
--
expansion
over the reciprocal space dimension
--
Expansion
over the reciprocal space dimension
--
Singular points
--
Spin dynamics
Аннотация:
We investigate generating functions for equipped trees composed of double bonds of two sorts on a hypercubic lattice of dimension d with built-in fragments. Rules for constructing these clusters are chosen to ensure the estimate for coefficients of power series in time for the longitudinal and transverse autocorrelation functions of the spin system with axially symmetric interaction. We derive a system of two equations for the tree-generating functions and an equation for the generating functions of chains leading from the root to a fragment in a tree using the Bethe approximation and under the condition that mainly bonds of one sort are taken into account. For the face-centered hypercubic lattice, we find the First terms of the 1/d
expansion
for the coordinate of the singular point of the generating function in both the anisotropic and the isotropic cases taking fragments in the forms of a triangle from four bonds and a four-fold bound pair into account. The obtained result is written in terms of ratios of lattice sums and is generalized to nuclear spin systems with dipole-dipole interaction. The theoretical value of the singular-point coordinate agrees well with the experimental value calculated from the tail of the absorption spectrum of the nuclear magnetic resonance in a barium fluoride monocrystal.
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Держатели документа:
Russian Acad Sci, Siberian Branch, LV Kirensky Phys Inst, Novosibirsk, Russia
Krasnoyarsk State Univ, Krasnoyarsk, Russia
ИФ СО РАН
Kirenskii Institute of Physics, Siberian Branch, RAS, Russian Federation
Krasnoyarsk State University, Krasnoyarsk, Russian Federation
Доп.точки доступа:
Popov, M. A.; Зобов, Владимир Евгеньевич
}
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8.
Heat capacity and
thermal
expansion
study of relaxor-ferroelectric Ba0.92Ca0.08Ti0.76Zr0.24O3 / M. . Gorev [et al.]> // J. Phys.: Condens. Matter. - 2004. -
Vol. 16
,
Is. 39
. - P. 7143-7150,
DOI
10.1088/0953-8984/16/39/045. - Cited References: 18 . - ISSN 0953-8984
РУБ
Physics, Condensed Matter
Рубрики:
CERAMICS
BA(TI1-XZRX)O-3
PEROVSKITES
Кл.слова (ненормированные):
Calorimetry
--
Dielectric properties
--
Ferroelectric materials
--
Perovskite
--
Phase transitions
--
Solid solutions
--
Specific heat
--
Thermal
expansion
--
Adiabatic calorimetry
--
Frequency dispersion
--
Polar domains
--
Relaxor ferroelectrics
--
Barium compounds
Аннотация:
Heat capacity and thermal
expansion
of the Ba0.92Ca0.08Ti0.76Zr0.24O3 compound is measured using the methods of adiabatic calorimetry and optic-mechanical dilatometry in the temperature range 100-370 K. Three blurred anomalies on the C-p(T) and alpha(T) dependencies are observed in the temperature range 200-360 K. The results of the studies are discussed together with data on the structure and dielectric properties in the framework of spherical random bond-random field model.
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Держатели документа:
CNRS, CEMES, F-31055 Toulouse, France
ИФ СО РАН
L V kirensky Institute of Physics, Siberian Division, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk 660036, Russian Federation
Доп.точки доступа:
Gorev, M. V.; Горев, Михаил Васильевич; Flerov, I. N.; Флёров, Игорь Николаевич; Bondarev, V. S.; Бондарев, Виталий Сергеевич; Sciau, P.; Savariault, J. M.
}
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9.
Zobov, V. E.
Tree growth parameter in the Eden model on face-centered hypercubic lattices / V. E. Zobov, M. A. Popov> // Theor. Math. Phys. - 2005. -
Vol. 144
,
Is. 3
. - P. 1361-1371,
DOI
10.1007/s11232-005-0165-z. - Cited References: 19 . - ISSN 0040-5779
РУБ
Physics, Multidisciplinary + Physics, Mathematical
Рубрики:
BRANCHED POLYMERS
HIGH-TEMPERATURES
EXPANSION
CLUSTERS
SYSTEMS
TIME
Кл.слова (ненормированные):
Eden model
--
number of lattice trees
--
Monte Carlo method
--
growth parameter
--
singular points of generating function
--
large-dimension
expansion
--
face-centered hypercubic lattice
--
Eden model
--
Face-centered hypercubic lattice
--
Growth parameter
--
Large-dimension
expansion
--
Monte Carlo method
--
Number of lattice trees
--
Singular points of generating function
Аннотация:
In the Eden model, we investigate how the tree growth parameter depends on the space dimension d for face-centered hypercubic lattices. We find the first three terms of the 1/d-
expansion
for this parameter directly from the generating function without calculating the number of trees because the growth parameter is the reciprocal coordinate of the singular point of the tree generating function. The same growth parameter was calculated by computer experiment where the ratios between the numbers of trees without intersections and trees without restrictions in the dimensions 3, 4, 6, 8, and 10 were estimated by the Monte Carlo method on face-centered cubic lattices. The results of the two methods agree well. Comparing with the previously performed computer experiment for simple hypercubic lattices, we observe that the values of the singular exponents for the tree generating functions are close for two different types of lattices.
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Держатели документа:
RAS, Siberian Branch, Kirenskii Inst Phys, Novosibirsk, Russia
Krasnoyarsk State Univ, Krasnoyarsk, Russia
ИФ СО РАН
Kirenskii Institute of Physics, Siberian Branch, RAS, Russian Federation
Krasnoyarsk State University, Krasnoyarsk, Russian Federation
Доп.точки доступа:
Popov, M. A.; Зобов, Владимир Евгеньевич
}
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10.
Heat capacity and
thermal
expansion
study of Ba0.9Bi0.067(Ti1-xZrx)O3 ceramics [Text] / M. Gorev [et al.]> // Journal of Physics: Condensed Matter. - 2007. -
Т. 19
,
№ 34
. - С. 346237,
DOI
10.1088/0953-8984/19/34/346237 . - ISSN 0953-8984. - ISSN 1361-648X
ГРНТИ
29.19
РИНЦ
Держатели документа:
ICMCB-CNRS,Universite de Bordeaux i
LVKirensky Institute of Physics,Siberian Division,Russian Academy of Sciences
Доп.точки доступа:
Gorev, M. V.; Горев, Михаил Васильевич; Bondarev, V. S.; Бондарев, Виталий Сергеевич; Flerov, I. N.; Флёров, Игорь Николаевич; Maglione, M.; Simon, A.
}
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11.
Heat capacity and
thermal
expansion
study of Ba0.9Bi0.067(Ti1-xZrx)O-3 ceramics / M. . Gorev [et al.]> // J. Phys.: Condens. Matter. - 2007. -
Vol. 19
,
Is. 34
. - Ст. 346237,
DOI
10.1088/0953-8984/19/34/346237. - Cited References: 15 . - ISSN 0953-8984
РУБ
Physics, Condensed Matter
Рубрики:
BA(TI1-XZRX)O-3
STATE
Кл.слова (ненормированные):
Adiabatic calorimeters
--
Temperature range
--
Temperature regions
--
Thermal
expansion
anomaly
--
Barium
--
Ceramic materials
--
Dielectric properties
--
Expansion
--
Specific heat
--
Zirconium
--
Thermal
expansion
Аннотация:
For Ba0.9Bi0.067(Ti1-xZrx)O-3 (x = 0.04, 0.15) ceramics, the heat capacity C-p(T) and the thermal
expansion
alpha(T) were measured using an adiabatic calorimeter and an optical-mechanical dilatometer in the temperature range 100-420 K. Both compounds reveal diffuse heat capacity and thermal
expansion
anomalies: three anomalies in the temperature regions 150-250 K, 250-300 K (alpha(T) only) and 300-400 K at x = 0.04 and two anomalies in the regions 200 250 K and 250-350 K at x = 0.15. The results obtained are discussed together with the data on the dielectric properties.
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Держатели документа:
[Gorev, Michail
Bondarev, Vitaly
Flerov, Igor] Russian Acad Sci, LV Kirensky Phys Inst, Siberian Div, Krasnoyarsk 660036, Russia
[Maglione, Mario
Simon, Annie] Univ Bordeaux 1, CNRS, ICMCB, F-33608 Pessac, France
ИФ СО РАН
LVKirensky Institute of Physics, Siberian Division, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk 660036, Russian Federation
ICMCB-CNRS, Universite de Bordeaux i, 87 avenue ASchweitzer, 33608 Pessac, France
Доп.точки доступа:
Gorev, M. V.; Горев, Михаил Васильевич; Bondarev, V. S.; Бондарев, Виталий Сергеевич; Flerov, I. N.; Флёров, Игорь Николаевич; Maglione, M.; Simon, A.
}
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12.
Thermal
expansion
, polarization
and phase diagrams of Ba1-yBi2y/3Ti1-xZrxO3 and Ba1-yLayTi1-y/4O3 compounds / M. . Gorev [et al.]> // J. Phys.: Condens. Matter. - 2009. -
Vol. 21
,
Is. 7
. - Ст. 75902. - P.,
DOI
10.1088/0953-8984/21/7/075902. - Cited References: 28. - This work was supported by the Russian Foundation for Basic Research ( project no. 07-02-00069) and the Council on Grants from the President of the Russian Federation for Support of Leading Scientific Schools ( project no. NSh-1011.2008.2). . - ISSN 0953-8984
РУБ
Physics, Condensed Matter
Рубрики:
HEAT-CAPACITY
CERAMICS
BA(TI1-XZRX)O-3
FERROELECTRICS
BEHAVIOR
BATIO3
BATI0.65ZR0.35O3
CONDUCTIVITY
PEROVSKITES
CHEMISTRY
Кл.слова (ненормированные):
Barium
--
Dielectric properties
--
Lanthanum
--
Phase diagrams
--
Polarization
--
Thermal stress
--
Zirconium
--
Ceramic compositions
--
Root mean squares
--
Temperature ranges
--
Temperature-dependent measurements
--
Thermal
expansion
co-efficient
--
Thermal-
expansion
properties
--
Thermal
expansion
Аннотация:
The thermal
expansion
properties of the ceramic compositions Ba1-yLayTi1-y/4O3 (y = 0.0, 0.026, 0.036, 0.054) and Ba1-yBi2y/3Ti1-xZrxO3 (y = 0.10; x = 0.0, 0.04, 0.05, 0.10, 0.15) were determined in the temperature range 120-700 K. We report the temperature- dependent measurements of the strain, thermal
expansion
coefficient and the magnitude of root mean square polarization. The results obtained are discussed together with the data on the structure and dielectric properties.
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Держатели документа:
[Gorev, Michail
Bondarev, Vitaly
Flerov, Igor] Russian Acad Sci, Siberian Div, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
[Gorev, Michail
Bondarev, Vitaly
Flerov, Igor] Siberian Fed Univ, Inst Engn Phys, Krasnoyarsk 660041, Russia
[Maglione, Mario
Simon, Annie] Univ Bordeaux 1, ICMCB CNRS, F-33608 Pessac, France
[Sciau, Philippe] Univ Toulouse, CEMES CNRS, F-31055 Toulouse, France
[Boulos, Madona
Guillemet-Fritsch, Sophie] Univ Toulouse, CIRIMAT CNRS UPS INPT, F-31062 Toulouse, France
ИФ СО РАН
L v Kirensky Institute of Physics, Siberian Division, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk 660036, Russian Federation
Institute of Engineering Physics, Siberian Federal University, av. Svobodny 79, Krasnoyarsk, 660041, Russian Federation
ICMCB-CNRS, Universite de Bordeaux i, 87 avenue A Schweitzer, 33608 Pessac, France
CEMES-CNRS, Universite de Toulouse, 29 rue Jeanne Marvig, 31055 Toulouse, France
CIRIMAT CNRS/UPS/INPT, Universite de Toulouse, Batiment 2R1, 118 route de Narbonne, 31062 Toulouse, France
Доп.точки доступа:
Gorev, M. V.; Горев, Михаил Васильевич; Bondarev, V. S.; Бондарев, Виталий Сергеевич; Flerov, I. N.; Флёров, Игорь Николаевич; Maglione, M.; Simon, A.; Sciau, P.; Boulos, M.; Guillemet-Fritsch, S.; Russian Foundation for Basic Research [07-02-00069]; Council on Grants from the President of the Russian Federation for Support of Leading Scientific Schools [NSh-1011.2008.2]
}
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13.
Thermal
expansion
of
(Ba1-x La (x) )Ti1-x/4O3 solid solutions / M. V. Gorev [et al.]> // Phys. Solid State. - 2009. -
Vol. 51
,
Is. 4
. - P. 790-796,
DOI
10.1134/S106378340904026X. - Cited References: 22. - This work was supported by the Russian Foundation for Basic Research (project no. 07-02-00069) and the Council on Grants from the President of the Russian Federation for the Support of Leading Scientific Schools of the Russian Federation (grant NSh-1011.2008.2). . - ISSN 1063-7834
РУБ
Physics, Condensed Matter
Рубрики:
CERAMICS
BATIO3
BA(TI1-XZRX)O-3
FERROELECTRICS
CONDUCTIVITY
BEHAVIOR
SYSTEM
PHASE
HEAT
Аннотация:
Deformation and the thermal
expansion
coefficient of ceramic samples of (Ba1 - x La (x) )Ti1 - x/4O3 solid solutions (x = 0, 0.026, 0.036, 0.054) were studied in the temperature range 120-700 K. Based on an analysis of the data obtained, the temperature-composition phase diagram is refined, and the temperature dependence of the polarization is calculated. The results are discussed in combination with the dielectric measurement data.
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Держатели документа:
[Gorev, M. V.
Flerov, I. N.] Russian Acad Sci, Siberian Branch, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
[Gorev, M. V.
Flerov, I. N.] Siberian Fed Univ, Krasnoyarsk 660041, Russia
[Sciau, Ph.] Univ Toulouse, CNRS, CEMES, Toulouse, France
[Guillemet-Fritsch, S.] Univ Toulouse, CNRS, INPT, CIRIMAT,UPS, Toulouse, France
ИФ СО РАН
Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk 660036, Russian Federation
Siberian Federal University, Svobodny pr. 79, Krasnoyarsk 660041, Russian Federation
CEMES-CNRS, Universite de Toulouse, Toulouse, France
CIRIMAT CNRS/UPS/INPT, Universite de Toulouse, Toulouse, France
Доп.точки доступа:
Gorev, M. V.; Горев, Михаил Васильевич; Flerov, I. N.; Флёров, Игорь Николаевич; Sciau, P.; Guillemet-Fritsch, S.; Russian Foundation for Basic Research [07-02-00069]; Russian Federation [NSh-1011.2008.2]
}
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14.
Investigation of thermal
expansion
, phase diagrams, and barocaloric effect in the (NH4)(2)WO2F4 and (NH4)(2)MoO2F4 oxyfluorides / M. V. Gorev [et al.]> // Phys. Solid State. - 2010. -
Vol. 52
,
Is. 1
. - P. 167-175,
DOI
10.1134/S1063783410010294. - Cited References: 27. - This study was performed within the framework of the Interdisciplinary Integration Project no. 34 of the Siberian Branch of the Russian Academy of Sciences and supported by the Krasnoyarsk Regional Science Foundation and the Russian Foundation for Basic Research within the framework of the project "Sibir'" ( grant no. 09-02-98001) and by the Council on Grants from the President of the Russian Federation for the Support of Leading Scientific Schools ( project no. NSh-1011.2008.2). . - ISSN 1063-7834
РУБ
Physics, Condensed Matter
Рубрики:
TRANSITIONS
CRYSTALS
DIFFRACTION
MECHANISM
PRESSURE
Аннотация:
The thermal
expansion
along the principal crystallographic axes of the (NH4)(2)WO2F4 and (NH4)(2)MoO2F4 oxyfluorides has been studied. The anomalous behavior of alpha (i) (T) due to the phase transitions has been revealed at T (1) = 271.4 K and T (2) a parts per thousand 180 K for the molybdate and at T (1) = 201.5 K and T (2) a parts per thousand 161 K for the tungstate. The quantities dT/dp and dT/d sigma (i) , which characterize the dependence of the phase transition temperatures on the hydrostatic and uniaxial pressures, have been determined from analyzing the results of studies of the thermal
expansion
and heat capacity with the use of the Pippard relations. The p-T and alpha (i) -T phase diagrams reflect different characters of the influence of the pressure on the stability of the initial and distorted phases of the oxyfluorides. The magnitudes of the extensive and intensive barocaloric effects determined in the vicinity of the structural phase transitions are as follows: Delta S (BCE) varies from approximately -10 to -17 J/mol K and Delta T (AD) a parts per thousand 8-17 K for the molybdate and Delta S (BCE) varies from approximately -10 to -17 J/mol K and Delta T (AD) a parts per thousand 8-13 K for the tungstate.
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Оригинал на русском языке
Исследование теплового расширения, фазовых диаграмм и барокалорического эффекта в оксифторидах (NH4)2WO2F4 и (NH4)2MoO2F4 [Текст] / М. В. Горев [и др.] // Физика твердого тела. - Санкт-Петербург : Федеральное государственное унитарное предприятие "Академический научно-издательский, производственно-полиграфический и книгораспространительский центр Российской академии наук "Издательство "Наука", 2010. - Т. 52 № 1. - С. 156-164
Держатели документа:
[Gorev, M. V.
Bogdanov, E. V.
Flerov, I. N.
Kocharova, A. G.] Russian Acad Sci, Siberian Branch, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
[Gorev, M. V.
Flerov, I. N.] Siberian Fed Univ, Krasnoyarsk 660041, Russia
[Laptash, N. M.] Russian Acad Sci, Far Estern Branch, Inst Chem, Vladivostok 690022, Russia
ИФ СО РАН
Kirensky Institute of Physics, Siberian Branch, Russian Academy of Science, Akademgorodok 50, Krasnoyarsk 660036, Russian Federation
Siberian Federal University, pr. Svobody 79, Krasnoyarsk 660041, Russian Federation
Institute of Chemistry, Far Estern Branch, Russian Academy of Sciences, ul. Stoletiya Vladivostoka 159, Vladivostok 690022, Russian Federation
Доп.точки доступа:
Gorev, M. V.; Горев, Михаил Васильевич; Bogdanov, E. V.; Богданов, Евгений Витальевич; Flerov, I. N.; Флёров, Игорь Николаевич; Kocharova, A. G.; Кочарова, Алла Георгиевна; Laptash, N. M.
}
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15.
The magnetoelastic effect
in CoxMn1-xS solid solutions / S. S. Aplesnin [et al.]> // Solid State Commun. - 2010. -
Vol. 150
,
Is. 13-14
. - P. 564-567,
DOI
10.1016/j.ssc.2010.01.009. - Cited References: 13. - This work was supported by the Russian Foundation for Basic Research projects no. 08-02-00364-a, no. 08-02-90031, no. F08037, F08-229, and no. 09-02-00554-a. . - ISSN 0038-1098
РУБ
Physics, Condensed Matter
Рубрики:
YVO3 SINGLE-CRYSTAL
SPIN-STATE
TRANSITION
TRANSPORT
PHYSICS
LACOO3
Кл.слова (ненормированные):
Semiconductors
--
X-ray scattering
--
Galvanomagnetic effects
--
Thermal
expansion
--
Semiconductors
--
X-ray scattering
--
Galvanomagnetic effects
--
Thermal
expansion
--
Semiconductors
--
X-ray scattering
--
Coefficient of thermal
expansion
--
Magnetoelastic effects
--
Orbital ordering
--
Temperature hysteresis
--
Temperature range
--
Zero magnetic fields
--
Crystallization
--
Electric resistance
--
Magnetic field effects
--
Magnetoresistance
--
Manganese
--
Manganese compounds
--
Neon
--
Organic polymers
--
Scattering
--
Semiconductor quantum dots
--
Solid solutions
--
Solidification
--
Thermal stress
--
X ray scattering
--
Thermal
expansion
Аннотация:
The magnetization of cation-substituted CoxMn(1-x)S sulfides upon cooling in zero magnetic field and in a field in the temperature range 4-300 K has been measured and the resistance versus magnetic field (up to 10 kOe) dependences have been obtained. Magnetoresistance and temperature hysteresis of magnetization versus prehistory are found at the magnetic field H < 0.1 T and at T < 240 K. The interrelation between the magnetic and elastic subsystems of the CoxMn1-xS solid solutions has been established. A jump in the coefficient of thermal expansion is observed at the Neel temperature. The features of the physical properties are explained by orbital ordering. (C) 2010 Elsevier Ltd. All rights reserved.
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Держатели документа:
[Aplesnin, S. S.
Ryabinkina, L. I.
Romanova, O. B.
Har'kov, A. M.] MF Reshetneva Aircosm Siberian State Univ, Krasnoyarsk 660014, Russia
[Gorev, M. V.
Balaev, A. D.
Eremin, E. V.
Bovina, A. F.] Russian Acad Sci, KSC Siberian Branch, Ctr Shared, Krasnoyarsk 660036, Russia
КНЦ СО РАН
M.F. Reshetneva Aircosmic Siberian State University, Krasnoyarsk, 660014, Russian Federation
Center of shared using KSC Siberian branch, Russian Academy Science, Krasnoyarsk, 660036, Russian Federation
Доп.точки доступа:
Aplesnin, S. S.; Аплеснин, Сергей Степанович; Ryabinkina, L. I.; Рябинкина, Людмила Ивановна; Romanova, O. B.; Романова, Оксана Борисовна; Har'kov, A. M.; Gorev, M. V.; Горев, Михаил Васильевич; Balaev, A. D.; Балаев, Александр Дмитриевич; Eremin, E. V.; Еремин, Евгений Владимирович; Bovina, A. F.; Бовина, Ася Федоровна
}
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16.
Thermal
expansion
, heat
capacity and dielectric properties of the vicinity of thase transition in A2A'MoO3F3 / E. I. Pogoreltsev, I. N. Flerov, M. V. Gorev, N. M. Laptash> //
Abstracts of the 10th Russia/CIS/Baltic/Japan Symposium on Ferroelectricity. - 2010. - P. 204
Материалы симпозиума
Доп.точки доступа:
Pogoreltsev, E. I.; Погорельцев, Евгений Ильич; Flerov, I. N.; Флёров, Игорь Николаевич; Gorev, M. V.; Горев, Михаил Васильевич; Laptash, N. M.; Russia/CIS/Baltic/Japan Symposium on Ferroelectricity(10 ; 2010 ; June 20-25 ; Yokohama, Japan)
}
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17.
Thermal
expansion
, polarization
and thase diagram of Ba1-xBi2x/3TiO3 / M. V. Gorev, I. N. Flerov, V. S. Bondarev [et al.]> //
Abstracts of the 10th Russia/CIS/Baltic/Japan Symposium on Ferroelectricity. - 2010. - P. 39
Материалы симпозиума
Доп.точки доступа:
Gorev, M. V.; Горев, Михаил Васильевич; Flerov, I. N.; Флёров, Игорь Николаевич; Bondarev, V. S.; Бондарев, Виталий Сергеевич; Maglione, M.; Simon, A.; Russia/CIS/Baltic/Japan Symposium on Ferroelectricity(10 ; 2010 ; June 20-25 ; Yokohama, Japan)
}
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18.
Thermal
expansion
, phase
diagrams and barocaloric effects in (NH4)(2)NbOF5 / M. . Gorev [et al.]> // J. Phys.: Condens. Matter. - 2010. -
Vol. 22
,
Is. 18
. - Ст. 185901,
DOI
10.1088/0953-8984/22/18/185901. - Cited References: 17. - This work was supported in part by the Krasnoyarsk Regional Foundation for Support of Scientific and Scientific-Technological Investigations and RFBR in the framework of project 'Siberia' (Grant No. 09-02-98001), and the Council on Grants from the President of the Russian Federation for Support of Leading Scientific Schools (project No. Nsh-1011.2008.2). . - ISSN 0953-8984
РУБ
Physics, Condensed Matter
Рубрики:
CRYSTAL-STRUCTURE
SOLID-STATE
OXYFLUORIDE
TRANSITION
ANION
Кл.слова (ненормированные):
Antiferromagnets
--
Ferromagnets
--
Heat capacities
--
High stress
--
Intermediate phase
--
Pippard relations
--
Structural phase transition
--
Transition temperature
--
Uniaxial pressures
--
Financial data processing
--
Phase diagrams
--
Phase transitions
--
Thermal stress
--
Tools
--
Thermal
expansion
Аннотация:
The thermal
expansion
along the a, b and c axes of a (NH4)(2)NbOF5 crystal was measured from 120 to 300 K. Anomalies of alpha(T) associated with previously reported phase transitions Cmc2(1) -> C-2 -> I a were observed along all directions at T-1 = 259.3 K and T-2 = 220.5 K. The analysis of thermal
expansion
and heat capacity in the frame of the Pippard relations has permitted us to determine the uniaxial pressure derivatives of the transition temperatures dT/d sigma(i). The T-sigma(i) phase diagrams have shown a tendency for the intermediate phase to disappear at high stress along the b and c axes. Intensive and extensive barocaloric effects near the structural phase transitions were found to be comparable with the caloric parameters of some ferroelectrics, ferromagnets and antiferromagnets.
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Держатели документа:
[Gorev, Michail
Bogdanov, Evgeny
Flerov, Igor] Russian Acad Sci, Siberian Div, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
[Gorev, Michail
Flerov, Igor] Siberian Fed Univ, Inst Engn Phys, Krasnoyarsk 660041, Russia
[Laptash, Nataly] Russian Acad Sci, Far Eastern Div, Inst Chem, Vladivostok 690022, Russia
ИФ СО РАН
LVKirensky Institute of Physics, Siberian Division, Russian Academy of Sciences, Krasnoyarsk, Akademgorodok 660036, Russian Federation
Institute of Engineering Physics, Siberian Federal University, av. Svobodny 79, Krasnoyarsk 660041, Russian Federation
Institute of Chemistry, Far Eastern Division, Russian Academy of Sciences, Vladivostok 690022, Russian Federation
Доп.точки доступа:
Gorev, M.; Bogdanov, E. V.; Богданов, Евгений Витальевич; Flerov, I. N.; Флёров, Игорь Николаевич; Laptash, N. M.
}
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19.
Guillemet-Fritsch S. Thermal
expansion
study of CaCu3Ti4012 compound in temperature range 150-200 К [Text] / M. V. Gorev, I. N. Flerov, A. V. Kartashev> //
12th European Meeting on Ferroelectricity : Abstracts. - 2011. - Ст. P9-1
Доп.точки доступа:
Gorev, M.V.; Flerov, I.N.; Kartashev, A.V.; European Meeting on Ferroelectricity(12 ; 2011 ; 26 June - 1 July ; Bordeaux, France)
}
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20.
Thermal
expansion
and
permittivity of (Ba1-xBi2x/3)TiO3 solid solutions / M. V. Gorev [et al.]> // Phys. Solid State. - 2011. -
Vol. 53
,
Is. 10
. - P. 2073-2079,
DOI
10.1134/S1063783411100143. - Cited References: 24. - This study was supported by the Council on Grants from the President of the Russian Federation for the Support of Leading Scientific Schools (grant NSh-4645.2010.2). . - ISSN 1063-7834
РУБ
Physics, Condensed Matter
Рубрики:
BARIUM-TITANATE
CERAMICS
BATIO3
BEHAVIOR
PHASE
FERROELECTRICS
Аннотация:
The strain, the thermal
expansion
coefficient, and the permittivity of ceramic samples of (Ba1 - x Bi-2x/3)TiO3 solid solutions with x = 0, 0.01, 0.03, and 0.05 have been studied in the temperature range 120-700 K. Based on an analysis of the results, the temperature-composition phase diagram has been refined, and the temperature dependence of the polarization has been calculated.
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Держатели документа:
[Gorev, M. V.
Flerov, I. N.
Bondarev, V. S.] Russian Acad Sci, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia
[Gorev, M. V.
Bondarev, V. S.] Siberian Fed Univ, Krasnoyarsk 660041, Russia
[Maglione, M.
Simon, A.] Univ Bordeaux 1, ICMCB CNRS, Pessac, France
ИФ СО РАН
Kirensky Institute of Physics, Siberian Branch, Russian Academy of Science, Akademgorodok, Krasnoyarsk 660036, Russian Federation
Siberian Federal University, pr. Svobodnyi 79, Krasnoyarsk 660041, Russian Federation
ICMCB-CNRS, Universite de Bordeaux 1, Pessac, France
Доп.точки доступа:
Gorev, M. V.; Горев, Михаил Васильевич; Flerov, I. N.; Флёров, Игорь Николаевич; Bondarev, V. S.; Бондарев, Виталий Сергеевич; Maglione, M.; Simon, A.
}
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