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1.
Вид документа
: Статья из журнала
Шифр издания
:
Автор(ы)
: Atuchin V. V., Isaenko L. I., Kesler V. G., Lin Z. S., Molokeev M. S., Yelisseyev A. P., Zhurkov S. A.
Заглавие
: Exploration on anion ordering, optical properties and electronic structure in K3WO3F3 elpasolite
Место публикации
: J. Solid State Chem. - 2012. - Vol. 187. - P.159-164. - ISSN 0022-4596,
DOI
10.1016/j.jssc.2011.12.037
Примечания
: Cited References: 50. - This study is partly supported by SB RAS Project No. 34. ZSL acknowledges the funding support of No. 91022036, 11174297, 2010CB630701, and 2011CB922204 in China. Authors also wish to thank V. D. Fokina for microcaloric measurements.
Предметные рубрики:
PHASE-TRANSITIONS
CRYSTAL-GROWTH
FERROELECTRIC
K3WO3F3
SOLID-STATE
OXYFLUORIDE
FLUORIDE
POLAR
CS
(NH4)(3)MOO3F3
APPROXIMATION
Anion ordering
Chemical routes
Elpasolite
First-priciples calculation
Forbidden band
Low temperatures
Non-linear optical coefficients
Nonlinear optical crystal
Optical transparency
Oxyfluorotungstate
Room temperature
Ключевые слова
(''Своб.индексиров.''): oxyfluorotungstate--structure--nonlinear optical crystals--electronic and optical properties--first-principles calculations
Аннотация:
Room-temperature modification of potassium oxyfluorotungstate, G(2)-K3WO3F3, has been prepared by low-temperature chemical route and single crystal growth. Wide optical transparency range of 0.3-9.4 mu m and forbidden band gap E-g=4.32 eV have been obtained for G(2)-K3WO3F3 crystal. Meanwhile, its electronic structure has been calculated with the first-principles calculations. The good agreement between the theorectical and experimental results have been achieved. Furthermore, G(2)-K3WO3F3 is predicted to possess the relatively large nonlinear optical coefficients. (C) 2012 Elsevier Inc. All rights reserved.
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2.
Вид документа
: Статья из журнала
Шифр издания
:
Автор(ы)
: Atuchin V. V., Gavrilova T. A., Isaenko L. I., Kesler V. G., Molokeev M. S., Zhurkov S. A.
Заглавие
: Synthesis and structural properties of cubic G0-Rb2KMoO3F3 oxyfluoride
Место публикации
: Ceram. Int.: Elsevier, 2012. - Vol. 38, Is. 3. - P.2455-2459. - ISSN 0272-8842,
DOI
10.1016/j.ceramint.2011.11.013
Примечания
: Cited References: 23. - This study was partly supported by RFBR (Grant 09-02-00062) and SB RAS (Grant 34).
Предметные рубрики:
PHASE-TRANSITIONS
FERROELECTRIC
K3WO3F3
(NH4)(3)MOO3F3
TEMPERATURE
PEROVSKITE
ELPASOLITE
CRYSTALS
BEHAVIOR
High temperature
Melt solidification
Micromorphologies
Melt solidification
Microstructure-final
Oxyfluorides
Space Groups
Oxyfluorides
X ray methods
Ключевые слова
(''Своб.индексиров.''): powders: solid state reaction--microstructure-final--x-ray methods--alkali oxides--halides
Аннотация:
High-temperature G0 polymorph of Rb2KMoO3F3 has been prepared by melt solidification. Micromorphology and chemical properties of the final product were evaluated by scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS). The elpasolite-related crystal structure of G0-Rb2KMoO3F3 has been refined by Rietveld method at T = 298 K (space group Fm-3m, a = 8.92446(8) Å, V = 710.76(1) Å3; RB = 3.55%).
Ferroelectric
G1-Rb2KMoO3F3 polymorph, earlier reported at T˂328 K, is not found at T = 298 K.
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3.
Вид документа
: Статья из сборника (однотомник)
Шифр издания
:
Автор(ы)
: Raevski I. P., Kubrin S. P., Blazhevich A. V., Molokeev M. S., Misjul S. V., Eremin E. V., Chen H., Sitalo E. I., Raevskaya S. I., Titov V. V., Sarychev D. A., Malitskaya M. A., Zakharchenko I. N.
Заглавие
: Studies of
ferroelectric
and magnetic phase transitions in multiferroic PbFe0.5B0.5O3-PbTiO3 (B-Nb, Ta) solid solution ceramics
Коллективы
: "Physics and Mechanics of New Materials and Underwater Applications", International symposium (2013 ; Jun. ; 5-8; Kaohsiung, Taiwan)
Место публикации
: International symposium "Physics and Mechanics of New Materials and Underwater Applications": Abstracts and schedule. - 2013. - P.38-39
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4.
Вид документа
: Статья из журнала
Шифр издания
:
Автор(ы)
: Zamkova N. G., Zhandun V. S., Zinenko V. I.
Заглавие
: First-principles calculations of
ferroelectric
properties in AA`BB`O6 double perovskites with different types of cation ordering
Место публикации
: Phys. status solidi B. - 2013. - Vol. 250, Is. 9. - P.1888-1897. - ISSN 0370-1972,
DOI
10.1002/pssb.201349084
Ключевые слова
(''Своб.индексиров.''): 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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5.
Вид документа
: Статья из сборника (однотомник)
Шифр издания
:
Автор(ы)
: Mikhaleva E. A., Kartashev A. V., Gorev M. V., Cherepakhin A. V., Sablina K. A., Mikhashenok N. V., Flerov I. N.
Заглавие
: Caloric effects and phase transitions in
ferroelectric
-ferromagnetic composites (x) La0.7Pb0.3MnO3 – (1-x) PbTiO3
Коллективы
: Functional Materials and Nanotechnologies
Место публикации
: International Conference “Functional materials and nanotechnologies” FM&NT 2012. - 2012. - P.82
Материалы конференции
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6.
Вид документа
: Статья из журнала
Шифр издания
:
Автор(ы)
: Mikhaleva E. A., Flerov I. N., Kartashev A. V., Gorev M. V., Cherepakhin A. V., Sablina K. A., Mikhashenok N. V., Volkov N. V., Shabanov A. V.
Заглавие
: Caloric effects and phase transitions in ferromagnetic-
ferroelectric
composites xLa(0.7)Pb(0.3)MnO(3)-(1-x)PbTiO3
Коллективы
: Russian Foundation for Basic Research [12-02-31253-mol-a]; Federal Special Program "Scientific and scientific-pedagogical staff of innovative Russia" [N 8379]; Council on Grants from the President of the Russian Federation for Support of Leading Scientific Schools [NSh-4828.2012.2]
Место публикации
: J. Mater. Res. - 2013. - Vol. 28, Is. 24. - P.3322-3331. - ISSN 0884-2914,
DOI
10.1557/jmr.2013.360. - ISSN 2044-5326
Примечания
: Cited References: 24. - This study was supported in parts by The Russian Foundation for Basic Research (Grant No. 12-02-31253-mol-a), Federal Special Program "Scientific and scientific-pedagogical staff of innovative Russia" (N 8379), and Council on Grants from the President of the Russian Federation for Support of Leading Scientific Schools (Grant NO. NSh-4828.2012.2). Dr. Maxim S. Molokeev is acknowledged for the x-ray characterization of the samples.
Предметные рубрики:
PRESSURE
TEMPERATURE
Аннотация:
Ceramic volumetric composites xLa(0.7)Pb(0.3)MnO(3)-(1-x)PbTiO3 (x = 0.18 and 0.85) were prepared. X-ray investigations have shown that rather low sintering temperature (800 degrees C) has allowed us to avoid the reaction and interdiffusion between two initial phases. Heat capacity, thermal expansion, and intensive magnetocaloric effect were measured in a wide temperature range. The sample composition has a low influence on temperatures of the ferromagnetic and
ferroelectric
phase transitions in composites. Electro- and barocaloric effects were determined by analysis in the framework of thermodynamic theory, electric equation of state, Maxwell relationships, and entropy-temperature-pressure phase diagram. Multicaloric efficiency of composites is discussed and compared with that of initial La0.7Pb0.3MnO3 and PbTiO3 compounds. Variation of a relationship between components can significantly increase both barocaloric and magnetocaloric efficiency of compositional material due to the mechanical stress appearing between grains of different ferroic phases under magnetic field.
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7.
Вид документа
: Статья из журнала
Шифр издания
:
Автор(ы)
: Ivliev M. P., Misyul S. V., Molokeev M. S., Sakhnenko V. P.
Заглавие
: Pseudo-proper
ferroelectric
phase transitions in oxyfluoride K3WO3F3
Место публикации
: Phase Transit.: Taylor & Francis, 2014. - Vol. 87, Is. 6. - P.592-602. - ISSN 0141-1594,
DOI
10.1080/01411594.2013.878026. - ISSN 1029-0338
Примечания
: Cited References: 14. - This study was supported by the of the President of the Russian Federation for the Support of Leading Scientific Schools [Grant NSh-924.2014.2].
Предметные рубрики:
TRANSFORMATIONS
(NH4)(3)MOO3F3
(NH4)(3)WO3F3
CS
Ключевые слова
(''Своб.индексиров.''): phase transition--statistical mechanics--order-disorder--
ferroelectric
--transformations--(nh4)(3)moo3f3--(nh4)(3)wo3f3--cs
Аннотация:
Based on the structural data on the phases of cryolite (ordered perovskite) K3WO3F3, we develop a statistical model, which allows to describe the sequence of phase transitions observed in this compound using a unified approach. According to the model, the crystal possesses two structural subsystems: the K cations located in the octahedral positions and the WO3F3 octahedra in positions alternating with K cations. In the symmetric (cubic) phase, each subsystem can be found in one of the eight states. At decreasing temperature, an orientational phase transition in the subsystem of octahedra occurs first, followed by a phase transition to the low-temperature phase, caused by the loss of stability with respect to the ordering in the K cation subsystem. We find that the electric polarization occurs as pseudoproper and discuss the mechanisms of formation of the phase states.
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8.
Вид документа
: Статья из журнала
Шифр издания
:
Автор(ы)
: Mikhaleva E. A., Flerov I. N., Gorev M. V., Molokeev M. S., Cherepakhin A. V., Kartashev A. V., Mikhashenok N. V., Sablina K. A.
Заглавие
: Caloric characteristics of PbTiO3 in the temperature range of the
ferroelectric
phase transition
Место публикации
: Phys. Solid State: MAIK Nauka-Interperiodica / Springer, 2012. - Vol. 54, Is. 9. - P.1832-1840. - ISSN 1063-7834,
DOI
10.1134/S1063783412090181
Примечания
: Cited References: 31. - This study was supported by the Russian Foundation for Basic Research (project no. 12-08-00079) and the Council on Grants from the President of the Russian Federation for Support of Leading Scientific Schools of the Russian Federation (grant no. NSh-4828.2012.2).
Предметные рубрики:
SINGLE-CRYSTALS
LEAD TITANATE
DIELECTRIC PROPERTIES
SOLID-SOLUTIONS
PRESSURE
PEROVSKITES
DEPENDENCE
BEHAVIOR
HEAT
Аннотация:
The heat capacity and thermal expansion of the PbTiO3 ceramic sample have been measured in the temperature range 80–970 K. The electrocaloric and barocaloric efficiencies of lead titanate in the
ferroelectric
phase transition range have been investigated by analyzing the experimental data in terms of the thermodynamic theory of phase transitions, the electrical equation of state P(T, E), the Pippard equation, and the S(T, p) diagram.
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9.
Вид документа
: Статья из журнала
Шифр издания
:
Автор(ы)
: Mikhaleva E. A., Flerov I. N., Bondarev V. S., Gorev M. V., Vasiliev A. D., Davydova T. N.
Заглавие
: Electrocaloric and barocaloric effects in some
ferroelectric
hydrosulfates and triglycinesulfate
Коллективы
: European Meeting on Ferroelectricity
Место публикации
: European Meeting on Ferroelectricity (12 ; 2011 ; 26 June - 1 July ; Bordeaux, France). Ferroelectrics: Taylor & Francis LTD, 2012. - Vol. 430. - P.78-83. - ISSN 0015-0193,
DOI
10.1080/00150193.2012.677717
Примечания
: Cited References: 14. - This work was supported by the Council on Grants from the President of the Russian Federation for Support of Leading Scientific Schools (project no, Nsh - 4645.2010.2).
Предметные рубрики:
PHASE-TRANSITIONS
AMMONIUM
RbHSO4
Ключевые слова
(''Своб.индексиров.''): ferroelectrics--phase transitions--electrocaloric and barocaloric effects
Аннотация:
A comparative analysis of electrocaloric and barocaloric efficiency of order-disorder ferroelectrics Rbx(NH4)1-xHSO4 and TGS is performed. A good agreement was found between intensive electrocaloric effects measured experimentally and calculated using electric equation of state. Barocaloric effects were evaluated analyzing the experimental data on heat capacity and T-p phase diagrams. In some crystals under study the same adiabatic temperature change can be produced by low pressure and rather high electric field.
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10.
Вид документа
: Статья из журнала
Шифр издания
:
Автор(ы)
: Atuchin V. V., Aleksandrovsky A. S., Chimitova O. D., Krylov A. S., Molokeev M. S., Bazarov B. G., Bazarova J. G., Xia, Zhiguo
Заглавие
: Synthesis and spectroscopic properties of multiferroic β΄-Tb2(MoO4)3
Коллективы
: International Workshop on Advanced Spectroscopy and Optical Materials (4th; 14–19 July 2013; Gdańsk, Poland)
Место публикации
: Opt. Mater./ ed.: M. Grinberg, P. Bojarski, A. Suchocki: Elsevier Science, 2014. - Vol. 36, Is. 10. - P.1631–1635. - ISSN 0925-3467,
DOI
10.1016/j.optmat.2013.12.008. - ISSN 1873-1252
Примечания
: Cited References: 43. - This study was partly supported by SB RAS under Projects 28.13 and 24.31, and by the PSB RAS Project No. 3.9.5b, and RFBR Projects
Предметные рубрики:
FERROELECTRIC
-FERROELASTIC Tb2(MoO4)3
STIMULATED RAMAN-SCATTERING
TRANSITION-METAL MOLYBDATES
RARE-EARTH MOLYBDATES
CRYSTAL-STRUCTURE
VIBRATIONAL PROPERTIES
LUMINESCENCE PROPERTIES
Tb-2(MoO4)3 CRYSTALS
TERBIUM MOLYBDATE
PHASE-TRANSITIONS
Ключевые слова
(''Своб.индексиров.''): terbium molybdate--raman spectrum--optical properties
Аннотация:
Orthorhombic terbium molybdate, β΄-Tb2(MoO4)3, microcrystals have been fabricated by solid state synthesis at T = 750-1270 K for t = 290 h. The crystal structure β΄-Tb2(MoO4)3 has been refined by Rietveld method in space group Pba2 with cell parameters of a = 10.35387(6), b = 10.38413(6) and c = 10.65695(7) A (RB = 1.83%). About 40 narrow Raman lines have been observed in the Raman spectrum recorded for the β΄-Tb2(MoO4)3 powder sample. The luminescence spectrum of β΄-Tb2(MoO4)3 has been measured under the excitation at 355 nm, and the intensive photoluminescence band at 540-550 nm has been found. В© 2013 Elsevier Ltd. All rights reserved.
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11.
Вид документа
: Статья из журнала
Шифр издания
:
Автор(ы)
: Zhandun V. S., Zinenko V. I.
Заглавие
: Lattice dynamics and the
ferroelectric
and antiferrodistorsive instabilities in a bulk crystal and thin films of SrZrO3
Место публикации
: Phys. Solid State: MAIK Nauka-Interperiodica / Springer, 2012. - Vol. 54, Is. 7. - P.1388-1396. - ISSN 1063-7834,
DOI
10.1134/S1063783412070359
Примечания
: Cited References: 9. - This study was supported by the Russian Foundation for Basic Research (project no. 09-02-00067) and the Council on Grants from the President of the Russian Federation in Support of Leading Scientific Schools of the Russian Federation (grant no. NSh-4645.2010.2).
Предметные рубрики:
SRTIO3
Аннотация:
The lattice dynamics and energies of phases related to antiferrodistorsive and
ferroelectric
distortions of bulk crystals and thin films of the SrZrO3 crystal have been calculated within the framework of the ab initio model of an ionic crystal. In the case of a bulk crystal, it has been found that the most energetically favorable phases are related to antiferrodistorsive lattice distortions. Ferroelectricity in the SrZrO3 crystal is suppressed by structural lattice distortions. In the case of thin films, it has been found that the
ferroelectric
instability is retained after the "rotation" of the oxygen octahedron and the film remains polar both in the case of a free surface and with the inclusion of the SrTiO3 substrate in the calculation. The spontaneous polarization of thin films of different thicknesses in the
ferroelectric
phase has been calculated.
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12.
Вид документа
: Статья из журнала
Шифр издания
:
Автор(ы)
: Zamkova N. G., Zinenko V. I., Shinkorenko A. S.
Заглавие
: 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
Место публикации
: Ferroelectrics: Special Issue: Professor Wolfgang Kleemann in honor of his 70th birthday: Taylor & Francis, 2012. - Vol. 426. - P.132-138. - ISSN 0015-0193,
DOI
10.1080/00150193.2012.671657. - ISSN 1563-5112
Примечания
: Cited References: 9. - This work was supported by the Russian Foundation for Basic Research (project no. 09-02-00067)
Ключевые слова
(''Своб.индексиров.''):
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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13.
Вид документа
: Статья из журнала
Шифр издания
:
Автор(ы)
: Zinenko V. I., Zamkova N. G., Zhandun V. S., Pavlovskii M. S.
Заглавие
:
Ferroelectric
and structural instability in double perovskites Me1+Bi3+Me3+Nb5+O6 (Me1+ = Na, K, Rb; Me3+ = Sc, Ga, In, Lu)
Место публикации
: J. Exp. Theor. Phys.: MAIK Nauka-Interperiodica / Springer, 2012. - Vol. 114, Is. 6. - P.955-962. - ISSN 1063-7761,
DOI
10.1134/S1063776112040188
Примечания
: Cited References: 7. - This work was supported by the Russian Foundation for Basic Research (project no. 09-02-00067) and by the program for the support of leading scientific schools (project no. NSh-4645.2010.2).
Аннотация:
Within the Gordon-Kim generalized model with regard to the polarizabilities of ions, the lattice constants, the high-frequency permittivity, the Born dynamic charges, and the vibration constants of the crystal lattice are calculated for cation-ordered double perovskites Me1+Bi3+Me3+Nb5+O6. The vibration spectra of all the compounds exhibit two types of instabilities: instability associated with the rotation of the oxygen octahedron and
ferroelectric
instability. Various combinations of distortions with respect to the rotation mode yield five energetically most favorable distorted phases. The symmetry and the energy characteristics of these phases are discussed. In four of the five phases, the distortions associated with the oxygen octahedron rotation lead to polar phases, thus allowing one to speak of improper ferroelectricity in these compounds. One phase turns out to be nonpolar; however, it contains unstable polar modes such that a displacement along the eigenvectors of these modes gives rise to polarization in the crystal.
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14.
Вид документа
: Статья из журнала
Шифр издания
:
Автор(ы)
: Raevski I. P., Titov V. V., Malitskaya M. A., Eremin E. V., Kubrin S. P., Blazhevich A. V., Chen H., Chou C.-C., Raevskaya S. I., Zakharchenko I. N., Sarychev D. A., Shevtsova S. I.
Заглавие
: Studies of
ferroelectric
and magnetic phase transitions in multiferroic PbFe0.5Ta0.5O3-PbTiO3 solid solution ceramics
Коллективы
: Russian Foundation for Basic Research (RFBR) [12-08-00887_a]; Research Committee of the University of Macau
Место публикации
: J. Mater. Sci.: Springer, 2014. - Vol. 49, Is. 18. - P.6459-6466. - ISSN 0022-2461,
DOI
10.1007/s10853-014-8376-z. - ISSN 1573-4803
Примечания
: Cited References: 35. - This study is partially supported by the Russian Foundation for Basic Research (RFBR) Project 12-08-00887_a and Research Committee of the University of Macau under Research and Development Grant for Chair Professor.
Предметные рубрики:
MOSSBAUER
CRYSTALS
BEHAVIOR
NIOBATE
Аннотация:
Dielectric, X-ray, Mossbauer and magnetization studies of (1 − x)PbFe0.5Ta0.5O3–(x)PbTiO3 ceramics with 0 ≤ x ≤ 0.3 have been carried out to determine the compositional evolution of
ferroelectric
and magnetic phase transition temperatures. Addition of PbTiO3 to PbFe0.5Ta0.5O3 increases the temperature T m of the dielectric permittivity maximum, decreases both the diffusion of this maximum and its frequency dependence. However, the Curie–Weiss temperature exceeds T m for all the compositions studied, indicating that the phase transition still remains diffused. Dilution of the (Fe, Ta)-sublattice by Ti lowers the Neel temperature T N but above a certain compositional threshold (x ≈ 0.1) fast lowering of T N stops and a new magnetic state stable in a rather wide compositional range appears. Large difference between the zero-field-cooled (ZFC) and FC magnetization–temperature curves as well as between the temperatures of magnetic phase transition determined from Mossbauer and magnetization studies for compositions with x 0.1 implies that this state is a spin-glass phase.
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15.
Вид документа
: Статья из журнала
Шифр издания
:
Автор(ы)
: Aver'yanov E. M.
Заглавие
: Anisotropy of dipole-dipole interactions in
ferroelectric
langmuir films of poly(vinylidene fluoride-trifluoroethylene)
Место публикации
: JETP Letters. - 2014. - Vol. 99, Is. 10. - P.590-593. - ISSN 0021-3640,
DOI
10.1134/S0021364014100026. - ISSN 1090-6487
Примечания
: Cited References: 12
Предметные рубрики:
LOCAL-FIELD
BLODGETT-FILMS
COPOLYMER
Аннотация:
The Lorentz tensor components L (j) for poly(vinylidene fluoride-trifluoroethylene, 70/30) Langmuir-Blodgett films in the
ferroelectric
phase are determined experimentally. The results indicate that intralayer dipole-dipole interaction between the segments of the polymer is stronger than interlayer interaction. This conclusion agrees with the absence of the critical film thickness below which ferroelectricity would cease to exist.
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16.
Вид документа
: Статья из сборника (однотомник)
Шифр издания
:
Автор(ы)
: Raevski I. P., Kubrin S. P., Blazhevich A. V., Molokeev M. S., Misjul S. V., Eremin E. V., Chen H., Chou C.-C., Sitalo E. I., Raevskaya S. I., Titov V. V., Sarychev D. A., Malitskaya M. A., Zakharchenko I. N.
Заглавие
: Studies of
ferroelectric
and magnetic phase transitions in multiferroic PbFe0.5 B 0.5O3–PbTiO3 (B = Nb, Ta) solid solution ceramics
Коллективы
: International Symposium on Physics and Mechanics of New Materials and Underwater Applications (5-8 June 2013; Kaohsiung, Taiwan)
Место публикации
: Advanced materials: Physics, mechanics and applications: Springer, 2014. - Part II. - P.109-120. - (Springer Proceedings in Physics; Vol. 152). - ISBN 0930-8989,
DOI
10.1007/978-3-319-03749-3_9. - ISBN 978-3-319-03748-6. - ISBN 978-3-319-03749-3 (eIBSN)
Примечания
: Cited References: 35
Аннотация:
Dielectric, X-ray, Mössbauer and magnetization studies of (1−x)PbFe0.5 B 0.5O3–(x)PbTiO3 (B = Nb, Ta) ceramics from the 0 x 0.3 range have been carried out. Addition of PbTiO3 to PbFe0.5 B 0.5O3 increases the temperature T m of the permittivity maximum, decreases the diffusion of this maximum and lowers the Neél temperature T N . However above a certain compositional threshold (x ≈ 0.1) fast lowering of T N stops and a new magnetic state stable in a rather wide compositional range appears. Large difference between the zero-field cooled and field-cooled magnetization-temperature curves as well as between the temperatures of magnetic phase transition determined from Mössbauer and magnetization studies for compositions with x 0.1 implies that this state is a spin glass phase.
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17.
Вид документа
: Статья из сборника (однотомник)
Шифр издания
:
Автор(ы)
: Mikhaleva E. A., Gorev M. V., Kartashev A. V., Flerov I. N., Sablina K. A., Mikhashenok N. V.
Заглавие
: Multicaloric efficiency of
ferroelectric
-ferromagnetic volume composites(x)La0.7Pb0.3MnO3 - (1-x)PbTiO3
Коллективы
: Joint Russia/CIS/Baltic/Japan Symposium on Ferroelectricity, International Conference Functional Materials and Nanotechnologies
Место публикации
: Joint 12th Russia/CIS/Baltic/Japan Symposium on Ferroelectricity. 9th International Conference Functional Materials and Nanotechnologies/ International Conference Functional Materials and Nanotechnologies (9 ; 2014 ; Sept. 29 – Oct. 2 ; Riga). - 2014. - Ст.R-11. - P.172
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18.
Вид документа
: Статья из сборника (однотомник)
Шифр издания
:
Автор(ы)
: Krylov A. S., Adamczyk M., Kozielski L., Oreshonkov A. S., Shabanov A. V., Pugachev A., Krylova S. N.
Заглавие
: Temperature Structural Changes in Relaxor
Ferroelectric
BBN Ceramics
Коллективы
: Уральский Федеральный университет им. Первого Президента России Б.Н. Ельцина, "Piezoresponse Force Microscopy and Nanoscale Phenomena in Polar Materials", International conference (2014 ; 14-17 July; Ekaterinburg, Russa)
Место публикации
: International conference «Piezoresponse Force Microscopy and Nanoscale Phenomena in Polar Materials» (PFM-2014). - 2014. - Ст.P-39. - P.126
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19.
Вид документа
: Статья из журнала
Шифр издания
:
Автор(ы)
: Atuchin V. V., Gavrilova T. A., Kesler V. G., Molokeev M. S., Aleksandrov K. S.
Заглавие
: Structural and electronic parameters of
ferroelectric
K3WO3F3
Коллективы
:
Место публикации
: Solid State Commun. - 2010. - Vol. 150, Is. 43-44. - P.2085-2088. - ISSN 0038-1098,
DOI
10.1016/j.ssc.2010.09.023
Примечания
: Cited References: 34. - This study was partly supported by RFBR (Grant 09-02-00062) and SB RAS (Grant 34).
Предметные рубрики:
CORE-LEVEL SPECTROSCOPY
PHASE-TRANSITIONS
RHEED ANALYSIS
SURFACE
OXYFLUORIDE
ELPASOLITE
(NH4)(2)KWO3F3
SUBSTITUTION
TEMPERATURE
DIFFRACTION
Ключевые слова
(''Своб.индексиров.''): ferroelectrics--chemical synthesis--electronic structure--photoelectron spectroscopies
Аннотация:
The low-temperature
ferroelectric
G2 polymorph of K3WO3F3 oxyfluoride is formed by chemical synthesis. The electronic parameters of G2-K3WO3F3 have been measured by X-ray photoelectron spectroscopy under excitation with Al K alpha radiation (1486.6 eV). Detailed spectra have been recorded for all element core levels and Auger lines. The chemical bonding effects in the WO3 F-3 and WO6 octahedrons are considered by using the binding energy difference Delta BE(O-W) = BE(O 1s) BE(W 4f(7/2)). (C) 2010 Elsevier Ltd. All rights reserved.
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20.
Вид документа
: Статья из журнала
Шифр издания
:
Автор(ы)
: Krasikov V. S., Zaitseva M. P., Shabanova L. A., Zrazhevsky V. M., Zherebtsova L. I., Aleksandrov K. S.
Заглавие
: Peculiarities of electromechanical properties of
ferroelectric
NH4HSeO4
Место публикации
: Ferroelectrics: GORDON BREACH SCI PUBL LTD, 1984. - Vol. 54, Is. 1. - P.91-94. - ISSN 0015-0193,
DOI
10.1080/00150198408215823
Примечания
: Cited References: 6. - В WoS указ. стр. 431-434
Аннотация:
Dielectric, piezoelectric and elastic properties of NH4HSeO4 crystal were studied in temperature range 180–300 K. Some anomalies of the properties near Tc=250 K and Ti=261 K were found. These anomalies are caused by high dielectric permeability along b-axis above Ti and the symmetry-forbidden piezoelectric coupling. An effort of phenomenological description of the successive phase transitions is made.
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